./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.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_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/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_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/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_944e0043-2e9d-4913-ab23-9808047f05e3/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 a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d --- 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 02:15:20,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:15:20,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:15:20,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:15:20,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:15:20,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:15:20,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:15:20,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:15:20,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:15:20,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:15:20,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:15:20,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:15:20,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:15:20,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:15:20,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:15:20,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:15:20,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:15:20,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:15:20,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:15:20,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:15:20,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:15:20,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:15:20,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:15:20,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:15:20,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:15:20,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:15:20,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:15:20,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:15:20,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:15:20,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:15:20,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:15:20,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:15:20,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:15:20,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:15:20,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:15:20,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:15:20,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:15:20,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:15:20,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:15:20,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:15:20,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:15:20,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:15:20,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:15:20,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:15:20,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:15:20,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:15:20,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:15:20,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:15:20,441 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:15:20,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:15:20,442 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:15:20,442 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:15:20,442 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:15:20,442 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:15:20,442 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:15:20,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:15:20,443 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:15:20,443 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:15:20,443 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:15:20,443 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:15:20,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:15:20,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:15:20,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:15:20,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:15:20,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:15:20,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:15:20,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:15:20,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:15:20,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:15:20,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:15:20,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:15:20,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:20,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:15:20,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:15:20,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:15:20,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:15:20,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:15:20,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:15:20,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:15:20,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:15:20,448 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_944e0043-2e9d-4913-ab23-9808047f05e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a82ce6420bb3a33f545de9c61d1c9b088648b3b20e86d3c3faffeeee8d72c08d [2022-11-22 02:15:20,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:15:20,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:15:20,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:15:20,738 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:15:20,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:15:20,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2022-11-22 02:15:23,913 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:15:24,629 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:15:24,630 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2022-11-22 02:15:24,672 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/data/757373b26/cc5e33c2d6bc4856b3bb742e1fa670e6/FLAG35b3e16bd [2022-11-22 02:15:24,687 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/data/757373b26/cc5e33c2d6bc4856b3bb742e1fa670e6 [2022-11-22 02:15:24,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:15:24,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:15:24,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:24,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:15:24,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:15:24,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:24" (1/1) ... [2022-11-22 02:15:24,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4953f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:24, skipping insertion in model container [2022-11-22 02:15:24,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:15:24" (1/1) ... [2022-11-22 02:15:24,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:15:24,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:15:28,552 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_944e0043-2e9d-4913-ab23-9808047f05e3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2022-11-22 02:15:28,560 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_944e0043-2e9d-4913-ab23-9808047f05e3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2022-11-22 02:15:28,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:28,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:15:29,077 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_944e0043-2e9d-4913-ab23-9808047f05e3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342349,342362] [2022-11-22 02:15:29,078 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_944e0043-2e9d-4913-ab23-9808047f05e3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i[342494,342507] [2022-11-22 02:15:29,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:15:29,291 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:15:29,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29 WrapperNode [2022-11-22 02:15:29,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:15:29,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:29,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:15:29,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:15:29,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,686 INFO L138 Inliner]: procedures = 455, calls = 2232, calls flagged for inlining = 223, calls inlined = 189, statements flattened = 5119 [2022-11-22 02:15:29,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:15:29,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:15:29,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:15:29,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:15:29,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,885 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:15:29,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:15:29,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:15:29,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:15:29,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (1/1) ... [2022-11-22 02:15:29,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:15:29,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:15:29,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:15:30,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:15:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:15:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:15:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:15:30,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:15:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 02:15:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 02:15:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:15:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:15:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:15:30,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:15:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 02:15:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 02:15:30,046 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wakeup [2022-11-22 02:15:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wakeup [2022-11-22 02:15:30,046 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wait_status [2022-11-22 02:15:30,046 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wait_status [2022-11-22 02:15:30,046 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_set_rx_mode [2022-11-22 02:15:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_set_rx_mode [2022-11-22 02:15:30,047 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:15:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:15:30,047 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 02:15:30,047 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 02:15:30,047 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 02:15:30,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 02:15:30,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 02:15:30,049 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 02:15:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 02:15:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 02:15:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 02:15:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:15:30,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:15:30,050 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:15:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:15:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 02:15:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 02:15:30,051 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 02:15:30,051 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 02:15:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:15:30,052 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:15:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:15:30,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:15:30,052 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 02:15:30,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 02:15:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:15:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_clean_tx [2022-11-22 02:15:30,053 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_clean_tx [2022-11-22 02:15:30,053 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_stop_runtime [2022-11-22 02:15:30,054 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_stop_runtime [2022-11-22 02:15:30,054 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:15:30,054 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:15:30,055 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_resume [2022-11-22 02:15:30,055 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_resume [2022-11-22 02:15:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_rxfree_index [2022-11-22 02:15:30,056 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_rxfree_index [2022-11-22 02:15:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:15:30,056 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_remove_one [2022-11-22 02:15:30,057 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_remove_one [2022-11-22 02:15:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:15:30,057 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:15:30,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:15:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:15:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:15:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:15:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:15:30,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:15:30,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:15:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:15:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:15:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:15:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:15:30,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:15:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-22 02:15:30,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-22 02:15:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-22 02:15:30,061 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-22 02:15:30,061 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:15:30,061 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:15:30,062 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 02:15:30,062 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 02:15:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_close [2022-11-22 02:15:30,063 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_close [2022-11-22 02:15:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_tx_timeout [2022-11-22 02:15:30,063 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_tx_timeout [2022-11-22 02:15:30,063 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_alloc_rx_skb [2022-11-22 02:15:30,063 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_alloc_rx_skb [2022-11-22 02:15:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_issue_command [2022-11-22 02:15:30,064 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_issue_command [2022-11-22 02:15:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:15:30,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:15:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:15:30,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:15:30,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:15:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:15:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_process_response [2022-11-22 02:15:30,066 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_process_response [2022-11-22 02:15:30,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:15:30,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:15:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:15:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:15:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:15:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:15:30,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:15:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-22 02:15:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-22 02:15:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-22 02:15:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-22 02:15:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-11-22 02:15:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-11-22 02:15:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_num_free_tx [2022-11-22 02:15:30,076 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_num_free_tx [2022-11-22 02:15:30,077 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2022-11-22 02:15:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2022-11-22 02:15:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_reset [2022-11-22 02:15:30,078 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_reset [2022-11-22 02:15:30,078 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:15:30,079 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:15:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:15:30,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:15:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_cmd_index [2022-11-22 02:15:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_cmd_index [2022-11-22 02:15:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 02:15:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 02:15:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_fill_free_ring [2022-11-22 02:15:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_fill_free_ring [2022-11-22 02:15:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:15:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:15:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-22 02:15:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-22 02:15:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 02:15:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 02:15:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:15:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:15:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:15:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:15:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:15:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:15:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:15:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:15:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:15:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:15:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:15:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:15:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 02:15:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 02:15:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_wait_interrupt [2022-11-22 02:15:30,088 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_wait_interrupt [2022-11-22 02:15:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:15:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:15:30,088 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:15:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:15:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-22 02:15:30,088 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-22 02:15:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:15:30,088 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_boot_3XP [2022-11-22 02:15:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_boot_3XP [2022-11-22 02:15:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-22 02:15:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-22 02:15:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:15:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:15:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:15:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:15:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-22 02:15:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-22 02:15:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 02:15:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 02:15:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2022-11-22 02:15:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2022-11-22 02:15:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:15:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:15:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:15:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:15:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_free_rx_rings [2022-11-22 02:15:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_free_rx_rings [2022-11-22 02:15:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:15:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:15:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_do_get_stats [2022-11-22 02:15:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_do_get_stats [2022-11-22 02:15:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_num_free [2022-11-22 02:15:30,092 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_num_free [2022-11-22 02:15:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_sleep [2022-11-22 02:15:30,093 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_sleep [2022-11-22 02:15:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:15:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:15:30,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:15:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2022-11-22 02:15:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2022-11-22 02:15:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_init_rings [2022-11-22 02:15:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_init_rings [2022-11-22 02:15:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 02:15:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 02:15:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_open [2022-11-22 02:15:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_open [2022-11-22 02:15:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:15:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:15:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_start_runtime [2022-11-22 02:15:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_start_runtime [2022-11-22 02:15:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 02:15:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 02:15:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 02:15:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 02:15:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:15:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure typhoon_inc_index [2022-11-22 02:15:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure typhoon_inc_index [2022-11-22 02:15:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:15:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:15:31,140 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:15:31,143 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:15:31,244 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:15:38,766 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:15:38,904 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:15:40,251 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:15:40,251 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:15:40,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:40 BoogieIcfgContainer [2022-11-22 02:15:40,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:15:40,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:15:40,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:15:40,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:15:40,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:15:24" (1/3) ... [2022-11-22 02:15:40,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc37f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:40, skipping insertion in model container [2022-11-22 02:15:40,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:15:29" (2/3) ... [2022-11-22 02:15:40,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc37f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:15:40, skipping insertion in model container [2022-11-22 02:15:40,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:15:40" (3/3) ... [2022-11-22 02:15:40,272 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-3com-typhoon.cil.i [2022-11-22 02:15:40,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:15:40,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:15:40,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:15:40,405 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;@1ff9c47b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:15:40,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:15:40,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 1326 states, 760 states have (on average 1.3) internal successors, (988), 782 states have internal predecessors, (988), 472 states have call successors, (472), 94 states have call predecessors, (472), 93 states have return successors, (467), 461 states have call predecessors, (467), 467 states have call successors, (467) [2022-11-22 02:15:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-22 02:15:40,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:40,455 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:40,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:15:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1062010424, now seen corresponding path program 1 times [2022-11-22 02:15:40,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:40,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215486714] [2022-11-22 02:15:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:40,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:41,648 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-22 02:15:41,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:15:41,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215486714] [2022-11-22 02:15:41,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215486714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:15:41,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:15:41,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:15:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289698673] [2022-11-22 02:15:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:15:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:15:41,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:15:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:15:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:15:41,712 INFO L87 Difference]: Start difference. First operand has 1326 states, 760 states have (on average 1.3) internal successors, (988), 782 states have internal predecessors, (988), 472 states have call successors, (472), 94 states have call predecessors, (472), 93 states have return successors, (467), 461 states have call predecessors, (467), 467 states have call successors, (467) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:15:44,642 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 02:15:48,159 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 02:15:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:15:48,348 INFO L93 Difference]: Finished difference Result 3447 states and 5028 transitions. [2022-11-22 02:15:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:15:48,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 167 [2022-11-22 02:15:48,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:15:48,386 INFO L225 Difference]: With dead ends: 3447 [2022-11-22 02:15:48,387 INFO L226 Difference]: Without dead ends: 2081 [2022-11-22 02:15:48,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:15:48,404 INFO L413 NwaCegarLoop]: 1983 mSDtfsCounter, 1157 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:15:48,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1159 Valid, 3637 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 514 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:15:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2022-11-22 02:15:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2077. [2022-11-22 02:15:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1222 states have (on average 1.295417348608838) internal successors, (1583), 1255 states have internal predecessors, (1583), 700 states have call successors, (700), 155 states have call predecessors, (700), 154 states have return successors, (700), 690 states have call predecessors, (700), 700 states have call successors, (700) [2022-11-22 02:15:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2983 transitions. [2022-11-22 02:15:48,658 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2983 transitions. Word has length 167 [2022-11-22 02:15:48,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:15:48,661 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 2983 transitions. [2022-11-22 02:15:48,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:15:48,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2983 transitions. [2022-11-22 02:15:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-22 02:15:48,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:48,681 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:48,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:15:48,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:15:48,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:48,683 INFO L85 PathProgramCache]: Analyzing trace with hash -933751732, now seen corresponding path program 1 times [2022-11-22 02:15:48,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:48,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307445751] [2022-11-22 02:15:48,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-11-22 02:15:49,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:15:49,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307445751] [2022-11-22 02:15:49,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307445751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:15:49,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:15:49,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:15:49,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019822747] [2022-11-22 02:15:49,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:15:49,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:15:49,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:15:49,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:15:49,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:15:49,135 INFO L87 Difference]: Start difference. First operand 2077 states and 2983 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 02:15:51,709 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 02:15:53,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:15:56,206 WARN L539 Checker$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 02:15:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:15:56,747 INFO L93 Difference]: Finished difference Result 5280 states and 7553 transitions. [2022-11-22 02:15:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:15:56,748 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), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 184 [2022-11-22 02:15:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:15:56,826 INFO L225 Difference]: With dead ends: 5280 [2022-11-22 02:15:56,826 INFO L226 Difference]: Without dead ends: 3220 [2022-11-22 02:15:56,836 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 02:15:56,838 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1497 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:15:56,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 3582 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 491 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 02:15:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2022-11-22 02:15:56,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3216. [2022-11-22 02:15:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 1891 states have (on average 1.2834479111581174) internal successors, (2427), 1945 states have internal predecessors, (2427), 1077 states have call successors, (1077), 249 states have call predecessors, (1077), 247 states have return successors, (1078), 1058 states have call predecessors, (1078), 1077 states have call successors, (1078) [2022-11-22 02:15:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 4582 transitions. [2022-11-22 02:15:57,007 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 4582 transitions. Word has length 184 [2022-11-22 02:15:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:15:57,007 INFO L495 AbstractCegarLoop]: Abstraction has 3216 states and 4582 transitions. [2022-11-22 02:15:57,008 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), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 02:15:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 4582 transitions. [2022-11-22 02:15:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-22 02:15:57,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:15:57,014 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:15:57,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:15:57,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:15:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:15:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash 930438492, now seen corresponding path program 1 times [2022-11-22 02:15:57,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:15:57,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152736861] [2022-11-22 02:15:57,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:15:57,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:15:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:15:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-11-22 02:15:57,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:15:57,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152736861] [2022-11-22 02:15:57,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152736861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:15:57,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:15:57,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:15:57,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434593594] [2022-11-22 02:15:57,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:15:57,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:15:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:15:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:15:57,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:15:57,559 INFO L87 Difference]: Start difference. First operand 3216 states and 4582 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 02:16:00,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:02,921 WARN L539 Checker$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 02:16:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:04,633 INFO L93 Difference]: Finished difference Result 7321 states and 10430 transitions. [2022-11-22 02:16:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 210 [2022-11-22 02:16:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:04,669 INFO L225 Difference]: With dead ends: 7321 [2022-11-22 02:16:04,670 INFO L226 Difference]: Without dead ends: 4122 [2022-11-22 02:16:04,692 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 02:16:04,693 INFO L413 NwaCegarLoop]: 2593 mSDtfsCounter, 1114 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:04,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 4189 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 649 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 02:16:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2022-11-22 02:16:04,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 4117. [2022-11-22 02:16:04,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4117 states, 2440 states have (on average 1.2819672131147541) internal successors, (3128), 2507 states have internal predecessors, (3128), 1355 states have call successors, (1355), 324 states have call predecessors, (1355), 321 states have return successors, (1356), 1331 states have call predecessors, (1356), 1355 states have call successors, (1356) [2022-11-22 02:16:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 5839 transitions. [2022-11-22 02:16:04,995 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 5839 transitions. Word has length 210 [2022-11-22 02:16:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:04,996 INFO L495 AbstractCegarLoop]: Abstraction has 4117 states and 5839 transitions. [2022-11-22 02:16:04,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 02:16:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 5839 transitions. [2022-11-22 02:16:05,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-22 02:16:05,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:05,004 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:16:05,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:16:05,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2126255812, now seen corresponding path program 1 times [2022-11-22 02:16:05,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:05,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914636929] [2022-11-22 02:16:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:05,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-11-22 02:16:05,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:05,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914636929] [2022-11-22 02:16:05,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914636929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:05,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:05,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:16:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063381242] [2022-11-22 02:16:05,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:05,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:05,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:05,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:05,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:16:05,474 INFO L87 Difference]: Start difference. First operand 4117 states and 5839 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-22 02:16:08,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:10,602 WARN L539 Checker$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 02:16:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:11,665 INFO L93 Difference]: Finished difference Result 8249 states and 11800 transitions. [2022-11-22 02:16:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:11,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 269 [2022-11-22 02:16:11,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:11,741 INFO L225 Difference]: With dead ends: 8249 [2022-11-22 02:16:11,741 INFO L226 Difference]: Without dead ends: 4149 [2022-11-22 02:16:11,761 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 02:16:11,764 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 5 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:11,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3268 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 463 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 02:16:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4149 states. [2022-11-22 02:16:11,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4149 to 4121. [2022-11-22 02:16:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4121 states, 2444 states have (on average 1.281505728314239) internal successors, (3132), 2511 states have internal predecessors, (3132), 1355 states have call successors, (1355), 324 states have call predecessors, (1355), 321 states have return successors, (1356), 1331 states have call predecessors, (1356), 1355 states have call successors, (1356) [2022-11-22 02:16:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4121 states to 4121 states and 5843 transitions. [2022-11-22 02:16:12,027 INFO L78 Accepts]: Start accepts. Automaton has 4121 states and 5843 transitions. Word has length 269 [2022-11-22 02:16:12,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:12,029 INFO L495 AbstractCegarLoop]: Abstraction has 4121 states and 5843 transitions. [2022-11-22 02:16:12,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-22 02:16:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4121 states and 5843 transitions. [2022-11-22 02:16:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-22 02:16:12,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:12,037 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:12,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:16:12,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:12,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:12,038 INFO L85 PathProgramCache]: Analyzing trace with hash -412864087, now seen corresponding path program 1 times [2022-11-22 02:16:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:12,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407613448] [2022-11-22 02:16:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:12,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2022-11-22 02:16:12,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:12,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407613448] [2022-11-22 02:16:12,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407613448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:12,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:12,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:16:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056844450] [2022-11-22 02:16:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:16:12,648 INFO L87 Difference]: Start difference. First operand 4121 states and 5843 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:16:15,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:18,590 WARN L539 Checker$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 02:16:19,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:19,506 INFO L93 Difference]: Finished difference Result 9236 states and 13075 transitions. [2022-11-22 02:16:19,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:19,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 277 [2022-11-22 02:16:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:19,539 INFO L225 Difference]: With dead ends: 9236 [2022-11-22 02:16:19,539 INFO L226 Difference]: Without dead ends: 5132 [2022-11-22 02:16:19,559 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 02:16:19,560 INFO L413 NwaCegarLoop]: 2595 mSDtfsCounter, 1262 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:19,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 4101 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 632 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:16:19,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2022-11-22 02:16:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 5126. [2022-11-22 02:16:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 3046 states have (on average 1.2800393959290872) internal successors, (3899), 3130 states have internal predecessors, (3899), 1663 states have call successors, (1663), 420 states have call predecessors, (1663), 416 states have return successors, (1664), 1632 states have call predecessors, (1664), 1663 states have call successors, (1664) [2022-11-22 02:16:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 7226 transitions. [2022-11-22 02:16:19,900 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 7226 transitions. Word has length 277 [2022-11-22 02:16:19,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:19,901 INFO L495 AbstractCegarLoop]: Abstraction has 5126 states and 7226 transitions. [2022-11-22 02:16:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:16:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 7226 transitions. [2022-11-22 02:16:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-22 02:16:19,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:19,913 INFO L195 NwaCegarLoop]: trace histogram [18, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:16:19,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash -951430862, now seen corresponding path program 1 times [2022-11-22 02:16:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:19,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720831109] [2022-11-22 02:16:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2022-11-22 02:16:25,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:25,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720831109] [2022-11-22 02:16:25,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720831109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:25,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:25,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:16:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579695617] [2022-11-22 02:16:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:16:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:16:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:16:25,184 INFO L87 Difference]: Start difference. First operand 5126 states and 7226 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-22 02:16:30,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:34,203 WARN L539 Checker$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 02:16:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:35,498 INFO L93 Difference]: Finished difference Result 6390 states and 8956 transitions. [2022-11-22 02:16:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:16:35,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) Word has length 340 [2022-11-22 02:16:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:35,536 INFO L225 Difference]: With dead ends: 6390 [2022-11-22 02:16:35,536 INFO L226 Difference]: Without dead ends: 6388 [2022-11-22 02:16:35,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:16:35,540 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 1052 mSDsluCounter, 6725 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 8639 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:35,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 8639 Invalid, 1784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1779 Invalid, 2 Unknown, 0 Unchecked, 9.7s Time] [2022-11-22 02:16:35,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2022-11-22 02:16:35,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 6315. [2022-11-22 02:16:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 3762 states have (on average 1.2719298245614035) internal successors, (4785), 3874 states have internal predecessors, (4785), 2023 states have call successors, (2023), 539 states have call predecessors, (2023), 529 states have return successors, (2032), 1971 states have call predecessors, (2032), 2023 states have call successors, (2032) [2022-11-22 02:16:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 8840 transitions. [2022-11-22 02:16:35,967 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 8840 transitions. Word has length 340 [2022-11-22 02:16:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:35,968 INFO L495 AbstractCegarLoop]: Abstraction has 6315 states and 8840 transitions. [2022-11-22 02:16:35,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (42), 3 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-22 02:16:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 8840 transitions. [2022-11-22 02:16:35,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-22 02:16:35,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:35,983 INFO L195 NwaCegarLoop]: trace histogram [19, 12, 12, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:35,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:16:35,983 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:35,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:35,984 INFO L85 PathProgramCache]: Analyzing trace with hash -828239955, now seen corresponding path program 1 times [2022-11-22 02:16:35,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:35,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043097991] [2022-11-22 02:16:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:35,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:36,113 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:16:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859633451] [2022-11-22 02:16:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:36,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:16:36,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:16:36,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:16:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:37,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 4222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:16:37,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:16:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2022-11-22 02:16:37,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:16:37,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:37,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043097991] [2022-11-22 02:16:37,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:16:37,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859633451] [2022-11-22 02:16:37,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859633451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:37,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:37,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:16:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331337159] [2022-11-22 02:16:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:16:37,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:37,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:16:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:16:37,708 INFO L87 Difference]: Start difference. First operand 6315 states and 8840 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 02:16:40,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:43,464 WARN L539 Checker$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 02:16:44,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:16:44,503 INFO L93 Difference]: Finished difference Result 14148 states and 19801 transitions. [2022-11-22 02:16:44,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:16:44,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 410 [2022-11-22 02:16:44,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:16:44,551 INFO L225 Difference]: With dead ends: 14148 [2022-11-22 02:16:44,551 INFO L226 Difference]: Without dead ends: 7868 [2022-11-22 02:16:44,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 408 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 02:16:44,584 INFO L413 NwaCegarLoop]: 2633 mSDtfsCounter, 1312 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 4207 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:16:44,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 4207 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 651 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 02:16:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7868 states. [2022-11-22 02:16:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7868 to 7861. [2022-11-22 02:16:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 4675 states have (on average 1.267807486631016) internal successors, (5927), 4814 states have internal predecessors, (5927), 2512 states have call successors, (2512), 690 states have call predecessors, (2512), 673 states have return successors, (2521), 2444 states have call predecessors, (2521), 2512 states have call successors, (2521) [2022-11-22 02:16:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 10960 transitions. [2022-11-22 02:16:45,167 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 10960 transitions. Word has length 410 [2022-11-22 02:16:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:16:45,169 INFO L495 AbstractCegarLoop]: Abstraction has 7861 states and 10960 transitions. [2022-11-22 02:16:45,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-22 02:16:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 10960 transitions. [2022-11-22 02:16:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-22 02:16:45,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:16:45,186 INFO L195 NwaCegarLoop]: trace histogram [19, 12, 12, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:45,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:16:45,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:16:45,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:16:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:16:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash -663131925, now seen corresponding path program 1 times [2022-11-22 02:16:45,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:16:45,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096317878] [2022-11-22 02:16:45,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:16:45,527 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:16:45,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922993323] [2022-11-22 02:16:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:16:45,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:16:45,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:16:45,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:16:45,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:16:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:16:47,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 4464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:16:47,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:16:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-11-22 02:16:47,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:16:47,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:16:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096317878] [2022-11-22 02:16:47,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:16:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922993323] [2022-11-22 02:16:47,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922993323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:16:47,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:16:47,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:16:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773447601] [2022-11-22 02:16:47,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:16:47,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:16:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:16:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:16:47,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:16:47,198 INFO L87 Difference]: Start difference. First operand 7861 states and 10960 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (63), 3 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-22 02:16:50,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:53,092 WARN L539 Checker$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 02:16:55,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:16:57,117 WARN L539 Checker$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 02:16:59,122 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 02:17:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:00,330 INFO L93 Difference]: Finished difference Result 15705 states and 21907 transitions. [2022-11-22 02:17:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:17:00,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (63), 3 states have call predecessors, (63), 2 states have call successors, (63) Word has length 464 [2022-11-22 02:17:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:00,364 INFO L225 Difference]: With dead ends: 15705 [2022-11-22 02:17:00,364 INFO L226 Difference]: Without dead ends: 7879 [2022-11-22 02:17:00,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:17:00,391 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 13 mSDsluCounter, 4878 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6516 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:00,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6516 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 929 Invalid, 4 Unknown, 0 Unchecked, 12.7s Time] [2022-11-22 02:17:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7879 states. [2022-11-22 02:17:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7879 to 7873. [2022-11-22 02:17:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7873 states, 4684 states have (on average 1.2672929120409906) internal successors, (5936), 4823 states have internal predecessors, (5936), 2512 states have call successors, (2512), 690 states have call predecessors, (2512), 676 states have return successors, (2527), 2447 states have call predecessors, (2527), 2512 states have call successors, (2527) [2022-11-22 02:17:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7873 states to 7873 states and 10975 transitions. [2022-11-22 02:17:00,995 INFO L78 Accepts]: Start accepts. Automaton has 7873 states and 10975 transitions. Word has length 464 [2022-11-22 02:17:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:00,996 INFO L495 AbstractCegarLoop]: Abstraction has 7873 states and 10975 transitions. [2022-11-22 02:17:00,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (63), 3 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-22 02:17:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7873 states and 10975 transitions. [2022-11-22 02:17:01,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2022-11-22 02:17:01,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:01,028 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 9, 9, 9, 9, 9, 9, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:01,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 02:17:01,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 02:17:01,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:17:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash 116480061, now seen corresponding path program 1 times [2022-11-22 02:17:01,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:01,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188430815] [2022-11-22 02:17:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:01,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:17:01,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560491631] [2022-11-22 02:17:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:01,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:17:01,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:01,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:17:01,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:17:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:02,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:17:02,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:17:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 989 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2022-11-22 02:17:03,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:17:03,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:03,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188430815] [2022-11-22 02:17:03,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:17:03,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560491631] [2022-11-22 02:17:03,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560491631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:03,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:03,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:17:03,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255208879] [2022-11-22 02:17:03,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:03,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:17:03,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:17:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:17:03,044 INFO L87 Difference]: Start difference. First operand 7873 states and 10975 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2022-11-22 02:17:06,124 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 02:17:08,639 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 02:17:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:10,142 INFO L93 Difference]: Finished difference Result 17833 states and 24888 transitions. [2022-11-22 02:17:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:17:10,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) Word has length 485 [2022-11-22 02:17:10,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:10,196 INFO L225 Difference]: With dead ends: 17833 [2022-11-22 02:17:10,196 INFO L226 Difference]: Without dead ends: 9995 [2022-11-22 02:17:10,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 483 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 02:17:10,227 INFO L413 NwaCegarLoop]: 2192 mSDtfsCounter, 1652 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:10,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 3563 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 509 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-22 02:17:10,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9995 states. [2022-11-22 02:17:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9995 to 9987. [2022-11-22 02:17:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9987 states, 5927 states have (on average 1.2701197907879196) internal successors, (7528), 6097 states have internal predecessors, (7528), 3197 states have call successors, (3197), 880 states have call predecessors, (3197), 862 states have return successors, (3213), 3117 states have call predecessors, (3213), 3197 states have call successors, (3213) [2022-11-22 02:17:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9987 states to 9987 states and 13938 transitions. [2022-11-22 02:17:10,953 INFO L78 Accepts]: Start accepts. Automaton has 9987 states and 13938 transitions. Word has length 485 [2022-11-22 02:17:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:10,954 INFO L495 AbstractCegarLoop]: Abstraction has 9987 states and 13938 transitions. [2022-11-22 02:17:10,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 3 states have call successors, (75), 3 states have call predecessors, (75), 3 states have return successors, (68), 3 states have call predecessors, (68), 3 states have call successors, (68) [2022-11-22 02:17:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 9987 states and 13938 transitions. [2022-11-22 02:17:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-22 02:17:10,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:10,976 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:10,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 02:17:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:17:11,191 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:17:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1640953183, now seen corresponding path program 1 times [2022-11-22 02:17:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:11,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250305199] [2022-11-22 02:17:11,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:11,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:11,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:17:11,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175696016] [2022-11-22 02:17:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:11,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:17:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:11,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:17:11,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:17:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:12,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 4680 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:17:12,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:17:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2022-11-22 02:17:12,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:17:12,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:12,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250305199] [2022-11-22 02:17:12,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:17:12,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175696016] [2022-11-22 02:17:12,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175696016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:12,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:12,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:17:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105012987] [2022-11-22 02:17:12,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:17:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:17:12,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:17:12,989 INFO L87 Difference]: Start difference. First operand 9987 states and 13938 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2022-11-22 02:17:16,026 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 02:17:18,292 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 02:17:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:19,599 INFO L93 Difference]: Finished difference Result 22843 states and 31916 transitions. [2022-11-22 02:17:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:17:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) Word has length 479 [2022-11-22 02:17:19,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:19,669 INFO L225 Difference]: With dead ends: 22843 [2022-11-22 02:17:19,669 INFO L226 Difference]: Without dead ends: 12891 [2022-11-22 02:17:19,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 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 02:17:19,703 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 1395 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:19,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 3732 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 590 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 02:17:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12891 states. [2022-11-22 02:17:20,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12891 to 12878. [2022-11-22 02:17:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12878 states, 7668 states have (on average 1.2700834637454357) internal successors, (9739), 7876 states have internal predecessors, (9739), 4097 states have call successors, (4097), 1133 states have call predecessors, (4097), 1112 states have return successors, (4114), 4000 states have call predecessors, (4114), 4097 states have call successors, (4114) [2022-11-22 02:17:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12878 states to 12878 states and 17950 transitions. [2022-11-22 02:17:20,898 INFO L78 Accepts]: Start accepts. Automaton has 12878 states and 17950 transitions. Word has length 479 [2022-11-22 02:17:20,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:20,899 INFO L495 AbstractCegarLoop]: Abstraction has 12878 states and 17950 transitions. [2022-11-22 02:17:20,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 3 states have call successors, (71), 3 states have call predecessors, (71), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65) [2022-11-22 02:17:20,900 INFO L276 IsEmpty]: Start isEmpty. Operand 12878 states and 17950 transitions. [2022-11-22 02:17:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-22 02:17:20,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:20,931 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:20,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:17:21,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:17:21,146 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:17:21,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:21,147 INFO L85 PathProgramCache]: Analyzing trace with hash 37117735, now seen corresponding path program 1 times [2022-11-22 02:17:21,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:21,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591877033] [2022-11-22 02:17:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:21,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:21,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:17:21,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897781597] [2022-11-22 02:17:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:21,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:17:21,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:21,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:17:21,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:17:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:22,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 4658 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:17:22,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:17:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 987 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 803 trivial. 0 not checked. [2022-11-22 02:17:22,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:17:22,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591877033] [2022-11-22 02:17:22,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:17:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897781597] [2022-11-22 02:17:23,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897781597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:23,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:23,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:17:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904098789] [2022-11-22 02:17:23,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:23,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:17:23,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:17:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:17:23,003 INFO L87 Difference]: Start difference. First operand 12878 states and 17950 transitions. Second operand has 6 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-22 02:17:27,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:17:28,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:17:31,523 WARN L539 Checker$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 02:17:33,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:17:35,539 WARN L539 Checker$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 02:17:37,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:37,870 INFO L93 Difference]: Finished difference Result 25826 states and 36149 transitions. [2022-11-22 02:17:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:17:37,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 3 states have call successors, (66) Word has length 476 [2022-11-22 02:17:37,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:37,941 INFO L225 Difference]: With dead ends: 25826 [2022-11-22 02:17:37,941 INFO L226 Difference]: Without dead ends: 12983 [2022-11-22 02:17:37,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:17:37,990 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 21 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 8157 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:37,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 8157 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1166 Invalid, 4 Unknown, 0 Unchecked, 14.1s Time] [2022-11-22 02:17:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2022-11-22 02:17:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 12938. [2022-11-22 02:17:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12938 states, 7713 states have (on average 1.2685077142486711) internal successors, (9784), 7921 states have internal predecessors, (9784), 4097 states have call successors, (4097), 1133 states have call predecessors, (4097), 1127 states have return successors, (4192), 4015 states have call predecessors, (4192), 4097 states have call successors, (4192) [2022-11-22 02:17:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12938 states to 12938 states and 18073 transitions. [2022-11-22 02:17:39,146 INFO L78 Accepts]: Start accepts. Automaton has 12938 states and 18073 transitions. Word has length 476 [2022-11-22 02:17:39,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:39,147 INFO L495 AbstractCegarLoop]: Abstraction has 12938 states and 18073 transitions. [2022-11-22 02:17:39,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 3 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (66), 4 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-22 02:17:39,147 INFO L276 IsEmpty]: Start isEmpty. Operand 12938 states and 18073 transitions. [2022-11-22 02:17:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-22 02:17:39,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:39,172 INFO L195 NwaCegarLoop]: trace histogram [20, 13, 13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:39,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:17:39,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:17:39,391 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:17:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1821855407, now seen corresponding path program 1 times [2022-11-22 02:17:39,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:39,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620962326] [2022-11-22 02:17:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:39,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:39,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:17:39,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143119976] [2022-11-22 02:17:39,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:39,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:17:39,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:39,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:17:39,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_944e0043-2e9d-4913-ab23-9808047f05e3/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:17:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:41,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 4669 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:17:41,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:17:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 184 proven. 1 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-22 02:17:41,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:17:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2022-11-22 02:17:41,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620962326] [2022-11-22 02:17:41,785 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:17:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143119976] [2022-11-22 02:17:41,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143119976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:17:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [52672351] [2022-11-22 02:17:41,824 INFO L159 IcfgInterpreter]: Started Sifa with 255 locations of interest [2022-11-22 02:17:41,824 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:17:41,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:17:41,836 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:17:41,836 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs