./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba --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 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d --- 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-b5237d8 [2022-11-22 00:33:08,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:33:08,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:33:08,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:33:08,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:33:08,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:33:08,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:33:08,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:33:08,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:33:08,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:33:08,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:33:08,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:33:08,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:33:08,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:33:08,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:33:08,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:33:08,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:33:08,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:33:08,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:33:08,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:33:08,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:33:08,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:33:08,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:33:08,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:33:08,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:33:08,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:33:08,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:33:08,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:33:08,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:33:08,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:33:08,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:33:08,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:33:08,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:33:08,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:33:08,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:33:08,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:33:08,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:33:08,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:33:08,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:33:08,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:33:08,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:33:08,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:33:08,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:33:08,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:33:08,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:33:08,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:33:08,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:33:08,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:33:08,526 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:33:08,526 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:33:08,527 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:33:08,527 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:33:08,527 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:33:08,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:33:08,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:33:08,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:33:08,528 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:33:08,529 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:33:08,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:33:08,529 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:33:08,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:33:08,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:33:08,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:33:08,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:33:08,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:33:08,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:33:08,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:33:08,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:33:08,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:33:08,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:33:08,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:33:08,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:33:08,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:33:08,534 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:33:08,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:33:08,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:33:08,535 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:33:08,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:33:08,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:33:08,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:33:08,536 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_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a4b1f21e140a71b13d0aa3889e8a2db465377126c9603026e75e43052ee15d [2022-11-22 00:33:08,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:33:08,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:33:08,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:33:08,839 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:33:08,839 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:33:08,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2022-11-22 00:33:11,899 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:33:12,684 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:33:12,685 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2022-11-22 00:33:12,756 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/data/8351ca1ab/8161acd1338640109ca50de842c91282/FLAG6e9944fa2 [2022-11-22 00:33:12,777 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/data/8351ca1ab/8161acd1338640109ca50de842c91282 [2022-11-22 00:33:12,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:33:12,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:33:12,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:33:12,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:33:12,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:33:12,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:33:12" (1/1) ... [2022-11-22 00:33:12,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fcbf8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:12, skipping insertion in model container [2022-11-22 00:33:12,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:33:12" (1/1) ... [2022-11-22 00:33:12,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:33:12,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:33:16,094 WARN L237 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_2e2c2121-3582-4796-bdc4-e8d516900cab/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2022-11-22 00:33:16,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:33:16,276 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:33:17,027 WARN L237 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_2e2c2121-3582-4796-bdc4-e8d516900cab/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i[386276,386289] [2022-11-22 00:33:17,040 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:33:17,197 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:33:17,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17 WrapperNode [2022-11-22 00:33:17,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:33:17,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:33:17,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:33:17,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:33:17,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:17,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:17,601 INFO L138 Inliner]: procedures = 356, calls = 3822, calls flagged for inlining = 167, calls inlined = 133, statements flattened = 7427 [2022-11-22 00:33:17,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:33:17,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:33:17,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:33:17,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:33:17,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:17,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:17,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:17,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:17,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:17,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:18,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:18,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:18,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:33:18,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:33:18,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:33:18,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:33:18,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (1/1) ... [2022-11-22 00:33:18,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:33:18,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:18,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:33:18,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:33:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2022-11-22 00:33:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2022-11-22 00:33:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-11-22 00:33:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-11-22 00:33:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-22 00:33:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:33:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:33:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2022-11-22 00:33:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2022-11-22 00:33:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 00:33:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 00:33:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 00:33:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 00:33:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 00:33:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 00:33:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure set_signals [2022-11-22 00:33:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure set_signals [2022-11-22 00:33:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure irq_test [2022-11-22 00:33:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_test [2022-11-22 00:33:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_dma_bufs [2022-11-22 00:33:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_dma_bufs [2022-11-22 00:33:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-11-22 00:33:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-11-22 00:33:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:33:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:33:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure flush_chars [2022-11-22 00:33:18,375 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_chars [2022-11-22 00:33:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-11-22 00:33:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-11-22 00:33:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 00:33:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 00:33:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 00:33:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 00:33:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure tx_stop [2022-11-22 00:33:18,376 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_stop [2022-11-22 00:33:18,376 INFO L130 BoogieDeclarations]: Found specification of procedure sca_init [2022-11-22 00:33:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure sca_init [2022-11-22 00:33:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 00:33:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 00:33:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:33:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:33:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:33:18,377 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:33:18,377 INFO L130 BoogieDeclarations]: Found specification of procedure chars_in_buffer [2022-11-22 00:33:18,378 INFO L138 BoogieDeclarations]: Found implementation of procedure chars_in_buffer [2022-11-22 00:33:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 00:33:18,378 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 00:33:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-22 00:33:18,378 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-22 00:33:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure change_params [2022-11-22 00:33:18,378 INFO L138 BoogieDeclarations]: Found implementation of procedure change_params [2022-11-22 00:33:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-11-22 00:33:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-11-22 00:33:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-22 00:33:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-22 00:33:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-11-22 00:33:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-11-22 00:33:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:33:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:33:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure set_break [2022-11-22 00:33:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure set_break [2022-11-22 00:33:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure tx_start [2022-11-22 00:33:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_start [2022-11-22 00:33:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:33:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 00:33:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-11-22 00:33:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-11-22 00:33:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_frame_bufs [2022-11-22 00:33:18,381 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_frame_bufs [2022-11-22 00:33:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure rx_free_frame_buffers [2022-11-22 00:33:18,381 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_free_frame_buffers [2022-11-22 00:33:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:33:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure wait_until_sent [2022-11-22 00:33:18,381 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_until_sent [2022-11-22 00:33:18,381 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-22 00:33:18,381 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-22 00:33:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 00:33:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 00:33:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure synclinkmp_cleanup [2022-11-22 00:33:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure synclinkmp_cleanup [2022-11-22 00:33:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_tty_port [2022-11-22 00:33:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_tty_port [2022-11-22 00:33:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:33:18,382 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-11-22 00:33:18,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-11-22 00:33:18,383 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 00:33:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 00:33:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:33:18,399 INFO L130 BoogieDeclarations]: Found specification of procedure set_rate [2022-11-22 00:33:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rate [2022-11-22 00:33:18,400 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-22 00:33:18,400 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-22 00:33:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2022-11-22 00:33:18,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2022-11-22 00:33:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-22 00:33:18,401 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-22 00:33:18,401 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 00:33:18,401 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 00:33:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-11-22 00:33:18,402 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-11-22 00:33:18,402 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 00:33:18,402 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 00:33:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-11-22 00:33:18,403 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-11-22 00:33:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 00:33:18,403 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 00:33:18,403 INFO L130 BoogieDeclarations]: Found specification of procedure rx_stop [2022-11-22 00:33:18,403 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_stop [2022-11-22 00:33:18,404 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_test [2022-11-22 00:33:18,404 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_test [2022-11-22 00:33:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-22 00:33:18,408 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-22 00:33:18,408 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-11-22 00:33:18,409 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-11-22 00:33:18,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:33:18,410 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-22 00:33:18,411 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-22 00:33:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 00:33:18,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 00:33:18,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:33:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-22 00:33:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-22 00:33:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-11-22 00:33:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-11-22 00:33:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure release_resources [2022-11-22 00:33:18,418 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resources [2022-11-22 00:33:18,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:33:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 00:33:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 00:33:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 00:33:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 00:33:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-22 00:33:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-22 00:33:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure tx_set_idle [2022-11-22 00:33:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_set_idle [2022-11-22 00:33:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure set_termios [2022-11-22 00:33:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure set_termios [2022-11-22 00:33:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:33:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:33:18,420 INFO L130 BoogieDeclarations]: Found specification of procedure write_room [2022-11-22 00:33:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure write_room [2022-11-22 00:33:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure enable_loopback [2022-11-22 00:33:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_loopback [2022-11-22 00:33:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure install [2022-11-22 00:33:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure install [2022-11-22 00:33:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_destroy [2022-11-22 00:33:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_destroy [2022-11-22 00:33:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 00:33:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 00:33:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure throttle [2022-11-22 00:33:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure throttle [2022-11-22 00:33:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-22 00:33:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-22 00:33:18,422 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:33:18,422 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:33:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_fifo [2022-11-22 00:33:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_fifo [2022-11-22 00:33:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-11-22 00:33:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_tty_port [2022-11-22 00:33:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:33:18,423 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-22 00:33:18,423 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-22 00:33:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_dma_buffer [2022-11-22 00:33:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_dma_buffer [2022-11-22 00:33:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure program_hw [2022-11-22 00:33:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure program_hw [2022-11-22 00:33:18,424 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-11-22 00:33:18,424 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-11-22 00:33:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:33:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:33:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure reset_port [2022-11-22 00:33:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_port [2022-11-22 00:33:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:33:18,425 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-22 00:33:18,425 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-22 00:33:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:33:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-11-22 00:33:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-11-22 00:33:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure register_test [2022-11-22 00:33:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure register_test [2022-11-22 00:33:18,426 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2022-11-22 00:33:18,426 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2022-11-22 00:33:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:33:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure hangup [2022-11-22 00:33:18,427 INFO L138 BoogieDeclarations]: Found implementation of procedure hangup [2022-11-22 00:33:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 00:33:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure get_icount [2022-11-22 00:33:18,427 INFO L138 BoogieDeclarations]: Found implementation of procedure get_icount [2022-11-22 00:33:18,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ops_disconnect_1 [2022-11-22 00:33:18,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ops_disconnect_1 [2022-11-22 00:33:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure write_control_reg [2022-11-22 00:33:18,428 INFO L138 BoogieDeclarations]: Found implementation of procedure write_control_reg [2022-11-22 00:33:18,428 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2022-11-22 00:33:18,428 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2022-11-22 00:33:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure unthrottle [2022-11-22 00:33:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure unthrottle [2022-11-22 00:33:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure tx_release [2022-11-22 00:33:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_release [2022-11-22 00:33:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 00:33:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 00:33:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 00:33:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 00:33:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_mode [2022-11-22 00:33:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_mode [2022-11-22 00:33:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure rx_get_frame [2022-11-22 00:33:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_get_frame [2022-11-22 00:33:18,433 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-11-22 00:33:18,433 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-11-22 00:33:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 00:33:18,434 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 00:33:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure send_xchar [2022-11-22 00:33:18,434 INFO L138 BoogieDeclarations]: Found implementation of procedure send_xchar [2022-11-22 00:33:18,434 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-22 00:33:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-22 00:33:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-11-22 00:33:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-11-22 00:33:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-22 00:33:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-22 00:33:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg16 [2022-11-22 00:33:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg16 [2022-11-22 00:33:18,435 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-22 00:33:18,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-22 00:33:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure get_signals [2022-11-22 00:33:18,436 INFO L138 BoogieDeclarations]: Found implementation of procedure get_signals [2022-11-22 00:33:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:33:18,436 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:33:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:33:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-22 00:33:18,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-22 00:33:18,436 INFO L130 BoogieDeclarations]: Found specification of procedure rx_start [2022-11-22 00:33:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_start [2022-11-22 00:33:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure trace_block [2022-11-22 00:33:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_block [2022-11-22 00:33:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure sanity_check [2022-11-22 00:33:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure sanity_check [2022-11-22 00:33:18,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:33:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:33:18,438 INFO L130 BoogieDeclarations]: Found specification of procedure read_status_reg [2022-11-22 00:33:18,443 INFO L138 BoogieDeclarations]: Found implementation of procedure read_status_reg [2022-11-22 00:33:19,573 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:33:19,577 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:33:52,912 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:33:57,047 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:33:57,047 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 00:33:57,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:33:57 BoogieIcfgContainer [2022-11-22 00:33:57,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:33:57,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:33:57,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:33:57,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:33:57,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:33:12" (1/3) ... [2022-11-22 00:33:57,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3b6564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:33:57, skipping insertion in model container [2022-11-22 00:33:57,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:33:17" (2/3) ... [2022-11-22 00:33:57,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3b6564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:33:57, skipping insertion in model container [2022-11-22 00:33:57,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:33:57" (3/3) ... [2022-11-22 00:33:57,069 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--tty--synclinkmp.ko-main.cil.out.i [2022-11-22 00:33:57,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:33:57,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:33:57,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:33:57,202 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;@67729a33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:33:57,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:33:57,215 INFO L276 IsEmpty]: Start isEmpty. Operand has 2056 states, 1234 states have (on average 1.3695299837925445) internal successors, (1690), 1291 states have internal predecessors, (1690), 710 states have call successors, (710), 110 states have call predecessors, (710), 110 states have return successors, (710), 704 states have call predecessors, (710), 710 states have call successors, (710) [2022-11-22 00:33:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 00:33:57,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:57,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:57,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1748456358, now seen corresponding path program 1 times [2022-11-22 00:33:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:57,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714094059] [2022-11-22 00:33:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:33:57,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:57,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714094059] [2022-11-22 00:33:57,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714094059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:57,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:57,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:33:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422486649] [2022-11-22 00:33:57,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:57,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:57,963 INFO L87 Difference]: Start difference. First operand has 2056 states, 1234 states have (on average 1.3695299837925445) internal successors, (1690), 1291 states have internal predecessors, (1690), 710 states have call successors, (710), 110 states have call predecessors, (710), 110 states have return successors, (710), 704 states have call predecessors, (710), 710 states have call successors, (710) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:00,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:02,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:06,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:08,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:12,087 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 [] [2022-11-22 00:34:13,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:13,584 INFO L93 Difference]: Finished difference Result 6149 states and 9346 transitions. [2022-11-22 00:34:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:13,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-22 00:34:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:13,642 INFO L225 Difference]: With dead ends: 6149 [2022-11-22 00:34:13,643 INFO L226 Difference]: Without dead ends: 4092 [2022-11-22 00:34:13,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:13,664 INFO L413 NwaCegarLoop]: 3635 mSDtfsCounter, 3075 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:13,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 6393 Invalid, 687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2022-11-22 00:34:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4092 states. [2022-11-22 00:34:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4092 to 4088. [2022-11-22 00:34:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 2458 states have (on average 1.3677786818551667) internal successors, (3362), 2562 states have internal predecessors, (3362), 1411 states have call successors, (1411), 219 states have call predecessors, (1411), 218 states have return successors, (1408), 1393 states have call predecessors, (1408), 1405 states have call successors, (1408) [2022-11-22 00:34:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 6181 transitions. [2022-11-22 00:34:14,103 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 6181 transitions. Word has length 16 [2022-11-22 00:34:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:14,103 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 6181 transitions. [2022-11-22 00:34:14,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 6181 transitions. [2022-11-22 00:34:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 00:34:14,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:14,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:14,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:34:14,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:34:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1633633831, now seen corresponding path program 1 times [2022-11-22 00:34:14,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:14,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970509215] [2022-11-22 00:34:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:14,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:14,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:14,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970509215] [2022-11-22 00:34:14,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970509215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:14,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:14,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:34:14,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032889596] [2022-11-22 00:34:14,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:14,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:14,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:14,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:14,478 INFO L87 Difference]: Start difference. First operand 4088 states and 6181 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:16,715 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 [] [2022-11-22 00:34:18,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:20,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:27,818 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 [] [2022-11-22 00:34:29,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:29,095 INFO L93 Difference]: Finished difference Result 4096 states and 6188 transitions. [2022-11-22 00:34:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:29,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 00:34:29,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:29,129 INFO L225 Difference]: With dead ends: 4096 [2022-11-22 00:34:29,129 INFO L226 Difference]: Without dead ends: 4093 [2022-11-22 00:34:29,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:29,135 INFO L413 NwaCegarLoop]: 3634 mSDtfsCounter, 3064 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3072 SdHoareTripleChecker+Valid, 6395 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:29,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3072 Valid, 6395 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 680 Invalid, 4 Unknown, 0 Unchecked, 14.3s Time] [2022-11-22 00:34:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2022-11-22 00:34:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 4089. [2022-11-22 00:34:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 2459 states have (on average 1.3676291175274502) internal successors, (3363), 2563 states have internal predecessors, (3363), 1411 states have call successors, (1411), 219 states have call predecessors, (1411), 218 states have return successors, (1408), 1393 states have call predecessors, (1408), 1405 states have call successors, (1408) [2022-11-22 00:34:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 6182 transitions. [2022-11-22 00:34:29,399 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 6182 transitions. Word has length 17 [2022-11-22 00:34:29,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:29,400 INFO L495 AbstractCegarLoop]: Abstraction has 4089 states and 6182 transitions. [2022-11-22 00:34:29,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 6182 transitions. [2022-11-22 00:34:29,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-22 00:34:29,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:29,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:29,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:34:29,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:34:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash 895757577, now seen corresponding path program 1 times [2022-11-22 00:34:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686415167] [2022-11-22 00:34:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:29,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:29,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686415167] [2022-11-22 00:34:29,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686415167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:29,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:29,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:34:29,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802497929] [2022-11-22 00:34:29,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:29,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:29,717 INFO L87 Difference]: Start difference. First operand 4089 states and 6182 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:31,923 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 [] [2022-11-22 00:34:33,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:37,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:41,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:43,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:45,258 INFO L93 Difference]: Finished difference Result 4115 states and 6207 transitions. [2022-11-22 00:34:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:45,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-22 00:34:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:45,284 INFO L225 Difference]: With dead ends: 4115 [2022-11-22 00:34:45,284 INFO L226 Difference]: Without dead ends: 4112 [2022-11-22 00:34:45,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:45,290 INFO L413 NwaCegarLoop]: 3634 mSDtfsCounter, 3032 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3036 SdHoareTripleChecker+Valid, 6398 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:45,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3036 Valid, 6398 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 4 Unknown, 0 Unchecked, 15.3s Time] [2022-11-22 00:34:45,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2022-11-22 00:34:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4108. [2022-11-22 00:34:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 2471 states have (on average 1.367057871307163) internal successors, (3378), 2575 states have internal predecessors, (3378), 1413 states have call successors, (1413), 224 states have call predecessors, (1413), 223 states have return successors, (1410), 1395 states have call predecessors, (1410), 1407 states have call successors, (1410) [2022-11-22 00:34:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 6201 transitions. [2022-11-22 00:34:45,540 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 6201 transitions. Word has length 18 [2022-11-22 00:34:45,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:45,540 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 6201 transitions. [2022-11-22 00:34:45,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:45,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 6201 transitions. [2022-11-22 00:34:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 00:34:45,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:45,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:34:45,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:34:45,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:34:45,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:45,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1997484764, now seen corresponding path program 1 times [2022-11-22 00:34:45,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:45,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345516725] [2022-11-22 00:34:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:45,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:34:45,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345516725] [2022-11-22 00:34:45,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345516725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:45,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:45,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:34:45,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880875978] [2022-11-22 00:34:45,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:45,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:45,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:45,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:45,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:34:45,844 INFO L87 Difference]: Start difference. First operand 4108 states and 6201 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:34:48,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:50,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:34:51,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:54,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:55,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:34:58,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:00,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:02,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:02,862 INFO L93 Difference]: Finished difference Result 6263 states and 9419 transitions. [2022-11-22 00:35:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:35:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 00:35:02,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:02,899 INFO L225 Difference]: With dead ends: 6263 [2022-11-22 00:35:02,899 INFO L226 Difference]: Without dead ends: 6252 [2022-11-22 00:35:02,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:02,906 INFO L413 NwaCegarLoop]: 3667 mSDtfsCounter, 2997 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2999 SdHoareTripleChecker+Valid, 6413 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:02,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2999 Valid, 6413 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 687 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2022-11-22 00:35:02,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2022-11-22 00:35:03,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 6247. [2022-11-22 00:35:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6247 states, 3757 states have (on average 1.3643864785733297) internal successors, (5126), 3916 states have internal predecessors, (5126), 2132 states have call successors, (2132), 359 states have call predecessors, (2132), 357 states have return successors, (2141), 2103 states have call predecessors, (2141), 2126 states have call successors, (2141) [2022-11-22 00:35:03,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6247 states to 6247 states and 9399 transitions. [2022-11-22 00:35:03,298 INFO L78 Accepts]: Start accepts. Automaton has 6247 states and 9399 transitions. Word has length 19 [2022-11-22 00:35:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:03,298 INFO L495 AbstractCegarLoop]: Abstraction has 6247 states and 9399 transitions. [2022-11-22 00:35:03,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:35:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 6247 states and 9399 transitions. [2022-11-22 00:35:03,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 00:35:03,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:03,303 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] [2022-11-22 00:35:03,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:35:03,303 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:03,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:03,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1004804396, now seen corresponding path program 1 times [2022-11-22 00:35:03,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:03,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34376487] [2022-11-22 00:35:03,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:03,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:03,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34376487] [2022-11-22 00:35:03,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34376487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:03,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:03,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:35:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442827216] [2022-11-22 00:35:03,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:03,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:35:03,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:35:04,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:35:04,001 INFO L87 Difference]: Start difference. First operand 6247 states and 9399 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 00:35:06,274 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 [] [2022-11-22 00:35:08,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:09,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:12,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:18,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:20,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:22,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:28,177 INFO L93 Difference]: Finished difference Result 11682 states and 17839 transitions. [2022-11-22 00:35:28,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:35:28,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-22 00:35:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:28,252 INFO L225 Difference]: With dead ends: 11682 [2022-11-22 00:35:28,252 INFO L226 Difference]: Without dead ends: 11671 [2022-11-22 00:35:28,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:35:28,265 INFO L413 NwaCegarLoop]: 4684 mSDtfsCounter, 4049 mSDsluCounter, 6823 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 236 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4052 SdHoareTripleChecker+Valid, 11507 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:28,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4052 Valid, 11507 Invalid, 1664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [236 Valid, 1424 Invalid, 4 Unknown, 0 Unchecked, 23.6s Time] [2022-11-22 00:35:28,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11671 states. [2022-11-22 00:35:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11671 to 10239. [2022-11-22 00:35:29,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10239 states, 6165 states have (on average 1.3669099756690997) internal successors, (8427), 6429 states have internal predecessors, (8427), 3502 states have call successors, (3502), 574 states have call predecessors, (3502), 571 states have return successors, (3526), 3452 states have call predecessors, (3526), 3496 states have call successors, (3526) [2022-11-22 00:35:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10239 states to 10239 states and 15455 transitions. [2022-11-22 00:35:29,144 INFO L78 Accepts]: Start accepts. Automaton has 10239 states and 15455 transitions. Word has length 26 [2022-11-22 00:35:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:29,145 INFO L495 AbstractCegarLoop]: Abstraction has 10239 states and 15455 transitions. [2022-11-22 00:35:29,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 00:35:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10239 states and 15455 transitions. [2022-11-22 00:35:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-22 00:35:29,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:29,152 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] [2022-11-22 00:35:29,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:35:29,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1931477235, now seen corresponding path program 1 times [2022-11-22 00:35:29,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:29,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458588017] [2022-11-22 00:35:29,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:29,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:29,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:29,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458588017] [2022-11-22 00:35:29,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458588017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:29,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:29,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446652111] [2022-11-22 00:35:29,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:29,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:35:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:35:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:29,535 INFO L87 Difference]: Start difference. First operand 10239 states and 15455 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:35:31,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:33,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:35,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:37,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:38,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:40,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:45,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:35:45,749 INFO L93 Difference]: Finished difference Result 14376 states and 21697 transitions. [2022-11-22 00:35:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:35:45,749 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2022-11-22 00:35:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:35:45,827 INFO L225 Difference]: With dead ends: 14376 [2022-11-22 00:35:45,827 INFO L226 Difference]: Without dead ends: 14373 [2022-11-22 00:35:45,837 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 [2022-11-22 00:35:45,839 INFO L413 NwaCegarLoop]: 3820 mSDtfsCounter, 3069 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3072 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:35:45,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3072 Valid, 6578 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2022-11-22 00:35:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2022-11-22 00:35:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 14369. [2022-11-22 00:35:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14369 states, 8655 states have (on average 1.3664933564413633) internal successors, (11827), 9026 states have internal predecessors, (11827), 4912 states have call successors, (4912), 805 states have call predecessors, (4912), 801 states have return successors, (4951), 4844 states have call predecessors, (4951), 4906 states have call successors, (4951) [2022-11-22 00:35:46,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14369 states to 14369 states and 21690 transitions. [2022-11-22 00:35:46,912 INFO L78 Accepts]: Start accepts. Automaton has 14369 states and 21690 transitions. Word has length 38 [2022-11-22 00:35:46,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:35:46,914 INFO L495 AbstractCegarLoop]: Abstraction has 14369 states and 21690 transitions. [2022-11-22 00:35:46,914 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:35:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 14369 states and 21690 transitions. [2022-11-22 00:35:46,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-22 00:35:46,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:35:46,930 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] [2022-11-22 00:35:46,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:35:46,931 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:35:46,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:35:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash -254953940, now seen corresponding path program 1 times [2022-11-22 00:35:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:35:46,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017950839] [2022-11-22 00:35:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:35:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:35:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:47,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:47,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017950839] [2022-11-22 00:35:47,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017950839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:35:47,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:35:47,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:35:47,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588313878] [2022-11-22 00:35:47,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:35:47,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:35:47,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:35:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:35:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:35:47,274 INFO L87 Difference]: Start difference. First operand 14369 states and 21690 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:35:49,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:51,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:35:53,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:55,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:35:58,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:01,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:04,912 INFO L93 Difference]: Finished difference Result 14378 states and 21699 transitions. [2022-11-22 00:36:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:36:04,912 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2022-11-22 00:36:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:04,996 INFO L225 Difference]: With dead ends: 14378 [2022-11-22 00:36:04,996 INFO L226 Difference]: Without dead ends: 14375 [2022-11-22 00:36:05,009 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 [2022-11-22 00:36:05,010 INFO L413 NwaCegarLoop]: 3820 mSDtfsCounter, 3060 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 6581 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:05,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3068 Valid, 6581 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 717 Invalid, 4 Unknown, 0 Unchecked, 17.2s Time] [2022-11-22 00:36:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14375 states. [2022-11-22 00:36:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14375 to 14371. [2022-11-22 00:36:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 8657 states have (on average 1.3664086866119902) internal successors, (11829), 9028 states have internal predecessors, (11829), 4912 states have call successors, (4912), 805 states have call predecessors, (4912), 801 states have return successors, (4951), 4844 states have call predecessors, (4951), 4906 states have call successors, (4951) [2022-11-22 00:36:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 21692 transitions. [2022-11-22 00:36:05,903 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 21692 transitions. Word has length 39 [2022-11-22 00:36:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:05,905 INFO L495 AbstractCegarLoop]: Abstraction has 14371 states and 21692 transitions. [2022-11-22 00:36:05,905 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:36:05,905 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 21692 transitions. [2022-11-22 00:36:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-22 00:36:05,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:05,914 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] [2022-11-22 00:36:05,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:36:05,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 685161238, now seen corresponding path program 1 times [2022-11-22 00:36:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:05,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918787096] [2022-11-22 00:36:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:05,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:06,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:06,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918787096] [2022-11-22 00:36:06,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918787096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:06,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:06,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:36:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930995381] [2022-11-22 00:36:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:36:06,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:36:06,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:36:06,242 INFO L87 Difference]: Start difference. First operand 14371 states and 21692 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:36:08,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:10,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:13,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:16,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:18,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:20,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:23,704 INFO L93 Difference]: Finished difference Result 14380 states and 21700 transitions. [2022-11-22 00:36:23,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:36:23,705 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2022-11-22 00:36:23,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:23,782 INFO L225 Difference]: With dead ends: 14380 [2022-11-22 00:36:23,782 INFO L226 Difference]: Without dead ends: 14371 [2022-11-22 00:36:23,796 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 [2022-11-22 00:36:23,797 INFO L413 NwaCegarLoop]: 3820 mSDtfsCounter, 3063 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:23,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 6584 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 719 Invalid, 3 Unknown, 0 Unchecked, 16.9s Time] [2022-11-22 00:36:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14371 states. [2022-11-22 00:36:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14371 to 14367. [2022-11-22 00:36:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14367 states, 8654 states have (on average 1.3663045990293505) internal successors, (11824), 9025 states have internal predecessors, (11824), 4911 states have call successors, (4911), 805 states have call predecessors, (4911), 801 states have return successors, (4950), 4843 states have call predecessors, (4950), 4905 states have call successors, (4950) [2022-11-22 00:36:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14367 states to 14367 states and 21685 transitions. [2022-11-22 00:36:24,691 INFO L78 Accepts]: Start accepts. Automaton has 14367 states and 21685 transitions. Word has length 40 [2022-11-22 00:36:24,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:24,692 INFO L495 AbstractCegarLoop]: Abstraction has 14367 states and 21685 transitions. [2022-11-22 00:36:24,692 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:36:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 14367 states and 21685 transitions. [2022-11-22 00:36:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-22 00:36:24,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:24,700 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] [2022-11-22 00:36:24,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:36:24,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -236034449, now seen corresponding path program 1 times [2022-11-22 00:36:24,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:24,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295920270] [2022-11-22 00:36:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:24,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:25,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:25,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295920270] [2022-11-22 00:36:25,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295920270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:25,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:25,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:36:25,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026843522] [2022-11-22 00:36:25,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:36:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:36:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:36:25,076 INFO L87 Difference]: Start difference. First operand 14367 states and 21685 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:36:27,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:29,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:30,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:35,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:38,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:40,621 INFO L93 Difference]: Finished difference Result 16650 states and 25070 transitions. [2022-11-22 00:36:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:36:40,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-22 00:36:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:40,713 INFO L225 Difference]: With dead ends: 16650 [2022-11-22 00:36:40,713 INFO L226 Difference]: Without dead ends: 16639 [2022-11-22 00:36:40,731 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 [2022-11-22 00:36:40,732 INFO L413 NwaCegarLoop]: 3838 mSDtfsCounter, 2993 mSDsluCounter, 2746 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2995 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:40,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2995 Valid, 6584 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 722 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2022-11-22 00:36:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16639 states. [2022-11-22 00:36:41,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16639 to 16613. [2022-11-22 00:36:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16613 states, 10001 states have (on average 1.3644635536446355) internal successors, (13646), 10426 states have internal predecessors, (13646), 5660 states have call successors, (5660), 954 states have call predecessors, (5660), 951 states have return successors, (5711), 5589 states have call predecessors, (5711), 5654 states have call successors, (5711) [2022-11-22 00:36:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16613 states to 16613 states and 25017 transitions. [2022-11-22 00:36:42,021 INFO L78 Accepts]: Start accepts. Automaton has 16613 states and 25017 transitions. Word has length 41 [2022-11-22 00:36:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:36:42,022 INFO L495 AbstractCegarLoop]: Abstraction has 16613 states and 25017 transitions. [2022-11-22 00:36:42,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-22 00:36:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 16613 states and 25017 transitions. [2022-11-22 00:36:42,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 00:36:42,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:36:42,034 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, 1, 1, 1] [2022-11-22 00:36:42,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:36:42,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:36:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:36:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash 870463937, now seen corresponding path program 1 times [2022-11-22 00:36:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:36:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123106430] [2022-11-22 00:36:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:36:42,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:36:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:36:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:36:42,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:36:42,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123106430] [2022-11-22 00:36:42,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123106430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:36:42,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:36:42,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:36:42,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97401217] [2022-11-22 00:36:42,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:36:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:36:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:36:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:36:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:36:42,251 INFO L87 Difference]: Start difference. First operand 16613 states and 25017 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:36:44,428 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 [] [2022-11-22 00:36:46,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:36:48,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:52,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:56,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:36:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:36:59,291 INFO L93 Difference]: Finished difference Result 41763 states and 62516 transitions. [2022-11-22 00:36:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:36:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2022-11-22 00:36:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:36:59,415 INFO L225 Difference]: With dead ends: 41763 [2022-11-22 00:36:59,415 INFO L226 Difference]: Without dead ends: 25151 [2022-11-22 00:36:59,511 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 [2022-11-22 00:36:59,512 INFO L413 NwaCegarLoop]: 3583 mSDtfsCounter, 1563 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 6074 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:36:59,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 6074 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1007 Invalid, 4 Unknown, 0 Unchecked, 16.1s Time] [2022-11-22 00:36:59,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25151 states. [2022-11-22 00:37:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25151 to 22994. [2022-11-22 00:37:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22994 states, 13714 states have (on average 1.3528511010646056) internal successors, (18553), 14274 states have internal predecessors, (18553), 7867 states have call successors, (7867), 1415 states have call predecessors, (7867), 1412 states have return successors, (7924), 7769 states have call predecessors, (7924), 7861 states have call successors, (7924) [2022-11-22 00:37:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22994 states to 22994 states and 34344 transitions. [2022-11-22 00:37:01,385 INFO L78 Accepts]: Start accepts. Automaton has 22994 states and 34344 transitions. Word has length 49 [2022-11-22 00:37:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:01,386 INFO L495 AbstractCegarLoop]: Abstraction has 22994 states and 34344 transitions. [2022-11-22 00:37:01,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:37:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 22994 states and 34344 transitions. [2022-11-22 00:37:01,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-22 00:37:01,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:01,402 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:37:01,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:37:01,403 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:37:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:01,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1341531013, now seen corresponding path program 1 times [2022-11-22 00:37:01,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:01,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352638569] [2022-11-22 00:37:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:37:01,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:01,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352638569] [2022-11-22 00:37:01,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352638569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:01,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:01,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:37:01,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884020749] [2022-11-22 00:37:01,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:37:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:37:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:37:01,752 INFO L87 Difference]: Start difference. First operand 22994 states and 34344 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:37:03,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:06,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:08,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:10,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:12,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:15,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:17,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:19,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:21,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:21,663 INFO L93 Difference]: Finished difference Result 59743 states and 89386 transitions. [2022-11-22 00:37:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:37:21,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2022-11-22 00:37:21,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:21,829 INFO L225 Difference]: With dead ends: 59743 [2022-11-22 00:37:21,830 INFO L226 Difference]: Without dead ends: 36750 [2022-11-22 00:37:21,929 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 [2022-11-22 00:37:21,931 INFO L413 NwaCegarLoop]: 4239 mSDtfsCounter, 2521 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 127 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 6696 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:21,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 6696 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1200 Invalid, 4 Unknown, 0 Unchecked, 18.6s Time] [2022-11-22 00:37:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36750 states. [2022-11-22 00:37:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36750 to 36705. [2022-11-22 00:37:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36705 states, 22081 states have (on average 1.336080793442326) internal successors, (29502), 23006 states have internal predecessors, (29502), 12330 states have call successors, (12330), 2306 states have call predecessors, (12330), 2293 states have return successors, (12407), 12155 states have call predecessors, (12407), 12324 states have call successors, (12407) [2022-11-22 00:37:24,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36705 states to 36705 states and 54239 transitions. [2022-11-22 00:37:24,348 INFO L78 Accepts]: Start accepts. Automaton has 36705 states and 54239 transitions. Word has length 64 [2022-11-22 00:37:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:24,349 INFO L495 AbstractCegarLoop]: Abstraction has 36705 states and 54239 transitions. [2022-11-22 00:37:24,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-22 00:37:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 36705 states and 54239 transitions. [2022-11-22 00:37:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 00:37:24,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:24,361 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:37:24,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:37:24,361 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:37:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1173761086, now seen corresponding path program 1 times [2022-11-22 00:37:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:24,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194834394] [2022-11-22 00:37:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:24,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:25,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 00:37:25,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:25,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194834394] [2022-11-22 00:37:25,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194834394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:25,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:25,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:37:25,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626889981] [2022-11-22 00:37:25,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:25,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:37:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:37:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:37:25,078 INFO L87 Difference]: Start difference. First operand 36705 states and 54239 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-22 00:37:27,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:29,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:37:31,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:34,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:36,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:39,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:41,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:45,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:37:50,035 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 [] [2022-11-22 00:37:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:37:54,375 INFO L93 Difference]: Finished difference Result 72904 states and 107677 transitions. [2022-11-22 00:37:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:37:54,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 61 [2022-11-22 00:37:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:37:54,549 INFO L225 Difference]: With dead ends: 72904 [2022-11-22 00:37:54,549 INFO L226 Difference]: Without dead ends: 36200 [2022-11-22 00:37:54,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:37:54,678 INFO L413 NwaCegarLoop]: 3682 mSDtfsCounter, 2674 mSDsluCounter, 13817 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 27 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2681 SdHoareTripleChecker+Valid, 17499 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:37:54,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2681 Valid, 17499 Invalid, 1954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 1922 Invalid, 5 Unknown, 0 Unchecked, 27.6s Time] [2022-11-22 00:37:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36200 states. [2022-11-22 00:37:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36200 to 36197. [2022-11-22 00:37:56,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36197 states, 21790 states have (on average 1.3347865993575034) internal successors, (29085), 22697 states have internal predecessors, (29085), 12124 states have call successors, (12124), 2295 states have call predecessors, (12124), 2282 states have return successors, (12199), 11955 states have call predecessors, (12199), 12118 states have call successors, (12199) [2022-11-22 00:37:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36197 states to 36197 states and 53408 transitions. [2022-11-22 00:37:56,777 INFO L78 Accepts]: Start accepts. Automaton has 36197 states and 53408 transitions. Word has length 61 [2022-11-22 00:37:56,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:37:56,777 INFO L495 AbstractCegarLoop]: Abstraction has 36197 states and 53408 transitions. [2022-11-22 00:37:56,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-22 00:37:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 36197 states and 53408 transitions. [2022-11-22 00:37:56,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 00:37:56,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:37:56,791 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:37:56,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:37:56,792 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:37:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:37:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 462198684, now seen corresponding path program 1 times [2022-11-22 00:37:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:37:56,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209702044] [2022-11-22 00:37:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:37:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:37:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:37:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 00:37:57,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:37:57,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209702044] [2022-11-22 00:37:57,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209702044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:37:57,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:37:57,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:37:57,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413335361] [2022-11-22 00:37:57,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:37:57,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:37:57,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:37:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:37:57,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:37:57,349 INFO L87 Difference]: Start difference. First operand 36197 states and 53408 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 00:37:59,559 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 [] [2022-11-22 00:38:01,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:05,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:09,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:11,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:12,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:15,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:16,819 INFO L93 Difference]: Finished difference Result 36803 states and 54146 transitions. [2022-11-22 00:38:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:38:16,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2022-11-22 00:38:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:16,951 INFO L225 Difference]: With dead ends: 36803 [2022-11-22 00:38:16,952 INFO L226 Difference]: Without dead ends: 36800 [2022-11-22 00:38:16,970 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 [2022-11-22 00:38:16,971 INFO L413 NwaCegarLoop]: 2913 mSDtfsCounter, 279 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 5603 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:16,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 5603 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 689 Invalid, 3 Unknown, 0 Unchecked, 18.2s Time] [2022-11-22 00:38:17,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36800 states. [2022-11-22 00:38:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36800 to 36800. [2022-11-22 00:38:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36800 states, 22110 states have (on average 1.3319312528267753) internal successors, (29449), 23028 states have internal predecessors, (29449), 12305 states have call successors, (12305), 2397 states have call predecessors, (12305), 2384 states have return successors, (12382), 12137 states have call predecessors, (12382), 12300 states have call successors, (12382) [2022-11-22 00:38:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36800 states to 36800 states and 54136 transitions. [2022-11-22 00:38:18,838 INFO L78 Accepts]: Start accepts. Automaton has 36800 states and 54136 transitions. Word has length 71 [2022-11-22 00:38:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:18,839 INFO L495 AbstractCegarLoop]: Abstraction has 36800 states and 54136 transitions. [2022-11-22 00:38:18,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 00:38:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 36800 states and 54136 transitions. [2022-11-22 00:38:18,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-22 00:38:18,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:18,881 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 00:38:18,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 00:38:18,881 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:38:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:18,882 INFO L85 PathProgramCache]: Analyzing trace with hash -900154318, now seen corresponding path program 1 times [2022-11-22 00:38:18,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:18,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911345019] [2022-11-22 00:38:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:18,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 00:38:19,888 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:19,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911345019] [2022-11-22 00:38:19,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911345019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:19,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:19,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:38:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866696597] [2022-11-22 00:38:19,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:19,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:38:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:19,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:38:19,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:38:19,891 INFO L87 Difference]: Start difference. First operand 36800 states and 54136 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:38:22,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:24,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:26,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:29,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:35,648 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 [] [2022-11-22 00:38:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:38,355 INFO L93 Difference]: Finished difference Result 101664 states and 149118 transitions. [2022-11-22 00:38:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:38:38,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 96 [2022-11-22 00:38:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:38,564 INFO L225 Difference]: With dead ends: 101664 [2022-11-22 00:38:38,564 INFO L226 Difference]: Without dead ends: 64865 [2022-11-22 00:38:38,663 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 [2022-11-22 00:38:38,663 INFO L413 NwaCegarLoop]: 4751 mSDtfsCounter, 2524 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 7514 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:38,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 7514 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 832 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2022-11-22 00:38:38,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64865 states. [2022-11-22 00:38:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64865 to 64829. [2022-11-22 00:38:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64829 states, 38791 states have (on average 1.3271377381351344) internal successors, (51481), 40546 states have internal predecessors, (51481), 21638 states have call successors, (21638), 4424 states have call predecessors, (21638), 4399 states have return successors, (21799), 21301 states have call predecessors, (21799), 21633 states have call successors, (21799) [2022-11-22 00:38:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64829 states to 64829 states and 94918 transitions. [2022-11-22 00:38:42,227 INFO L78 Accepts]: Start accepts. Automaton has 64829 states and 94918 transitions. Word has length 96 [2022-11-22 00:38:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:38:42,228 INFO L495 AbstractCegarLoop]: Abstraction has 64829 states and 94918 transitions. [2022-11-22 00:38:42,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:38:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 64829 states and 94918 transitions. [2022-11-22 00:38:42,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-22 00:38:42,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:38:42,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-22 00:38:42,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 00:38:42,270 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:38:42,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:38:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1833935798, now seen corresponding path program 1 times [2022-11-22 00:38:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:38:42,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300847799] [2022-11-22 00:38:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:38:42,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:38:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:38:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 00:38:43,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:38:43,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300847799] [2022-11-22 00:38:43,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300847799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:38:43,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:38:43,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:38:43,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062095824] [2022-11-22 00:38:43,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:38:43,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:38:43,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:38:43,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:38:43,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:38:43,720 INFO L87 Difference]: Start difference. First operand 64829 states and 94918 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:38:45,888 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 [] [2022-11-22 00:38:48,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:38:56,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:38:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:38:58,854 INFO L93 Difference]: Finished difference Result 130669 states and 191419 transitions. [2022-11-22 00:38:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:38:58,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 107 [2022-11-22 00:38:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:38:59,090 INFO L225 Difference]: With dead ends: 130669 [2022-11-22 00:38:59,091 INFO L226 Difference]: Without dead ends: 65841 [2022-11-22 00:38:59,381 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 [2022-11-22 00:38:59,382 INFO L413 NwaCegarLoop]: 2776 mSDtfsCounter, 35 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5531 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:38:59,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5531 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 675 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2022-11-22 00:38:59,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65841 states. [2022-11-22 00:39:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65841 to 64873. [2022-11-22 00:39:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64873 states, 38835 states have (on average 1.3267670915411356) internal successors, (51525), 40590 states have internal predecessors, (51525), 21638 states have call successors, (21638), 4424 states have call predecessors, (21638), 4399 states have return successors, (21799), 21301 states have call predecessors, (21799), 21633 states have call successors, (21799) [2022-11-22 00:39:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64873 states to 64873 states and 94962 transitions. [2022-11-22 00:39:03,285 INFO L78 Accepts]: Start accepts. Automaton has 64873 states and 94962 transitions. Word has length 107 [2022-11-22 00:39:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:03,286 INFO L495 AbstractCegarLoop]: Abstraction has 64873 states and 94962 transitions. [2022-11-22 00:39:03,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 00:39:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64873 states and 94962 transitions. [2022-11-22 00:39:03,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 00:39:03,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:03,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-22 00:39:03,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:39:03,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:39:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash 987666784, now seen corresponding path program 1 times [2022-11-22 00:39:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:03,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072692141] [2022-11-22 00:39:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 00:39:04,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:04,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072692141] [2022-11-22 00:39:04,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072692141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:39:04,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497529033] [2022-11-22 00:39:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:04,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:39:04,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:39:04,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:39:04,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:39:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:08,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 7162 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:39:08,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:39:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-22 00:39:08,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:39:08,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497529033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:39:08,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:39:08,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-22 00:39:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912711843] [2022-11-22 00:39:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:39:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:39:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:39:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:39:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:39:08,978 INFO L87 Difference]: Start difference. First operand 64873 states and 94962 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 00:39:11,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:13,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:39:16,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:21,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:39:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:39:25,491 INFO L93 Difference]: Finished difference Result 96015 states and 140719 transitions. [2022-11-22 00:39:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:39:25,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 144 [2022-11-22 00:39:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:39:25,899 INFO L225 Difference]: With dead ends: 96015 [2022-11-22 00:39:25,899 INFO L226 Difference]: Without dead ends: 96012 [2022-11-22 00:39:25,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:39:25,936 INFO L413 NwaCegarLoop]: 3945 mSDtfsCounter, 2974 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 6701 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:39:25,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2977 Valid, 6701 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 733 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-11-22 00:39:26,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96012 states. [2022-11-22 00:39:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96012 to 89793. [2022-11-22 00:39:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89793 states, 53766 states have (on average 1.327883792731466) internal successors, (71395), 56198 states have internal predecessors, (71395), 29994 states have call successors, (29994), 6069 states have call predecessors, (29994), 6032 states have return successors, (30219), 29512 states have call predecessors, (30219), 29989 states have call successors, (30219) [2022-11-22 00:39:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89793 states to 89793 states and 131608 transitions. [2022-11-22 00:39:30,743 INFO L78 Accepts]: Start accepts. Automaton has 89793 states and 131608 transitions. Word has length 144 [2022-11-22 00:39:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:39:30,743 INFO L495 AbstractCegarLoop]: Abstraction has 89793 states and 131608 transitions. [2022-11-22 00:39:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-22 00:39:30,744 INFO L276 IsEmpty]: Start isEmpty. Operand 89793 states and 131608 transitions. [2022-11-22 00:39:30,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-22 00:39:30,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:39:30,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-22 00:39:30,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:39:31,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 00:39:31,020 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:39:31,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:39:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash 551693151, now seen corresponding path program 1 times [2022-11-22 00:39:31,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:39:31,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163867352] [2022-11-22 00:39:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:39:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:39:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 00:39:32,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:39:32,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163867352] [2022-11-22 00:39:32,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163867352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:39:32,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030568328] [2022-11-22 00:39:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:39:32,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:39:32,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:39:32,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:39:32,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e2c2121-3582-4796-bdc4-e8d516900cab/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process