./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-usb-pegasus.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P --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 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:20:22,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:20:22,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:20:22,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:20:22,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:20:22,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:20:22,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:20:22,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:20:22,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:20:22,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:20:22,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:20:22,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:20:22,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:20:22,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:20:22,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:20:22,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:20:22,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:20:22,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:20:22,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:20:22,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:20:22,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:20:22,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:20:22,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:20:22,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:20:22,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:20:22,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:20:22,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:20:22,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:20:22,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:20:22,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:20:22,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:20:22,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:20:22,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:20:22,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:20:22,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:20:22,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:20:22,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:20:22,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:20:22,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:20:22,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:20:22,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:20:22,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:20:22,494 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:20:22,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:20:22,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:20:22,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:20:22,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:20:22,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:20:22,497 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:20:22,498 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:20:22,498 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:20:22,498 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:20:22,499 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:20:22,499 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:20:22,500 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:20:22,500 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:20:22,500 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:20:22,500 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:20:22,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:20:22,501 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:20:22,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:20:22,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:20:22,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:20:22,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:20:22,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:20:22,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:20:22,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:20:22,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:20:22,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:20:22,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:20:22,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:20:22,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:20:22,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:20:22,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:20:22,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:20:22,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:20:22,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:20:22,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:20:22,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:20:22,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:20:22,508 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97d835cf94d1b164c94e454298c9901161d3451d2aec7fccfb9f6ea65c4976ed [2021-11-21 00:20:22,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:20:22,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:20:22,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:20:22,794 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:20:22,794 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:20:22,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2021-11-21 00:20:22,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/data/37f6b2d5f/ee68c16518174503a1cdf1ad1820980f/FLAG3aa63bdcb [2021-11-21 00:20:23,774 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:20:23,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2021-11-21 00:20:23,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/data/37f6b2d5f/ee68c16518174503a1cdf1ad1820980f/FLAG3aa63bdcb [2021-11-21 00:20:24,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/data/37f6b2d5f/ee68c16518174503a1cdf1ad1820980f [2021-11-21 00:20:24,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:20:24,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:20:24,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:20:24,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:20:24,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:20:24,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:20:24" (1/1) ... [2021-11-21 00:20:24,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646b21b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:24, skipping insertion in model container [2021-11-21 00:20:24,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:20:24" (1/1) ... [2021-11-21 00:20:24,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:20:24,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:20:26,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2021-11-21 00:20:26,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2021-11-21 00:20:27,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:20:27,085 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:20:27,453 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327451,327464] [2021-11-21 00:20:27,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i[327596,327609] [2021-11-21 00:20:27,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:20:27,745 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:20:27,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27 WrapperNode [2021-11-21 00:20:27,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:20:27,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:20:27,747 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:20:27,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:20:27,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:27,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,141 INFO L137 Inliner]: procedures = 393, calls = 3228, calls flagged for inlining = 185, calls inlined = 165, statements flattened = 5478 [2021-11-21 00:20:28,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:20:28,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:20:28,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:20:28,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:20:28,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:20:28,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:20:28,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:20:28,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:20:28,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (1/1) ... [2021-11-21 00:20:28,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:20:28,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:20:28,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:20:28,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:20:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:20:28,575 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:20:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-21 00:20:28,576 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-21 00:20:28,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:20:28,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:20:28,576 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-21 00:20:28,576 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-21 00:20:28,576 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2021-11-21 00:20:28,577 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2021-11-21 00:20:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2021-11-21 00:20:28,577 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2021-11-21 00:20:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:20:28,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:20:28,577 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:20:28,578 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:20:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:20:28,578 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:20:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:20:28,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:20:28,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:20:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 00:20:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 00:20:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2021-11-21 00:20:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2021-11-21 00:20:28,579 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:20:28,579 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:20:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2021-11-21 00:20:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2021-11-21 00:20:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:20:28,580 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-11-21 00:20:28,580 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-11-21 00:20:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:20:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2021-11-21 00:20:28,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2021-11-21 00:20:28,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:20:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:20:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:20:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 00:20:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 00:20:28,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:20:28,582 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:20:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2021-11-21 00:20:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2021-11-21 00:20:28,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:20:28,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:20:28,584 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-21 00:20:28,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-21 00:20:28,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:20:28,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:20:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2021-11-21 00:20:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2021-11-21 00:20:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2021-11-21 00:20:28,586 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2021-11-21 00:20:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:20:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:20:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:20:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:20:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:20:28,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:20:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:20:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:20:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:20:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-21 00:20:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-21 00:20:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-21 00:20:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-21 00:20:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:20:28,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:20:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 00:20:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 00:20:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-21 00:20:28,590 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-21 00:20:28,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:20:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:20:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-21 00:20:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-21 00:20:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:20:28,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:20:28,591 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2021-11-21 00:20:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2021-11-21 00:20:28,592 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-21 00:20:28,592 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-21 00:20:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:20:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:20:28,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:20:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:20:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2021-11-21 00:20:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2021-11-21 00:20:28,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-21 00:20:28,594 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-21 00:20:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-21 00:20:28,595 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2021-11-21 00:20:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:20:28,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:20:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2021-11-21 00:20:28,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2021-11-21 00:20:28,596 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:20:28,596 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:20:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 00:20:28,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 00:20:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:20:28,597 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2021-11-21 00:20:28,597 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2021-11-21 00:20:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:20:28,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:20:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:20:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2021-11-21 00:20:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2021-11-21 00:20:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2021-11-21 00:20:28,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2021-11-21 00:20:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:20:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2021-11-21 00:20:28,602 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2021-11-21 00:20:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:20:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:20:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-21 00:20:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-21 00:20:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2021-11-21 00:20:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2021-11-21 00:20:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:20:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:20:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:20:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:20:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:20:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:20:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2021-11-21 00:20:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2021-11-21 00:20:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2021-11-21 00:20:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2021-11-21 00:20:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 00:20:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 00:20:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:20:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:20:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2021-11-21 00:20:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2021-11-21 00:20:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:20:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:20:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:20:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:20:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:20:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:20:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:20:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-11-21 00:20:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-11-21 00:20:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:20:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:20:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2021-11-21 00:20:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2021-11-21 00:20:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2021-11-21 00:20:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2021-11-21 00:20:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 00:20:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2021-11-21 00:20:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2021-11-21 00:20:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:20:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2021-11-21 00:20:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2021-11-21 00:20:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:20:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:20:29,517 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:20:29,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:20:30,127 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:20:35,631 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:20:36,082 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:20:37,120 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:20:37,120 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:20:37,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:20:37 BoogieIcfgContainer [2021-11-21 00:20:37,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:20:37,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:20:37,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:20:37,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:20:37,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:20:24" (1/3) ... [2021-11-21 00:20:37,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5112db05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:20:37, skipping insertion in model container [2021-11-21 00:20:37,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:20:27" (2/3) ... [2021-11-21 00:20:37,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5112db05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:20:37, skipping insertion in model container [2021-11-21 00:20:37,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:20:37" (3/3) ... [2021-11-21 00:20:37,134 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-pegasus.cil.i [2021-11-21 00:20:37,142 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:20:37,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:20:37,207 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:20:37,223 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:20:37,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:20:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 1028 states, 635 states have (on average 1.325984251968504) internal successors, (842), 643 states have internal predecessors, (842), 322 states have call successors, (322), 71 states have call predecessors, (322), 70 states have return successors, (316), 314 states have call predecessors, (316), 316 states have call successors, (316) [2021-11-21 00:20:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-21 00:20:37,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:37,315 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:20:37,316 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:20:37,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1036566588, now seen corresponding path program 1 times [2021-11-21 00:20:37,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:37,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295864911] [2021-11-21 00:20:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:37,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 00:20:38,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:38,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295864911] [2021-11-21 00:20:38,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295864911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:20:38,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:20:38,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:20:38,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640214585] [2021-11-21 00:20:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:20:38,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:20:38,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:38,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:20:38,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:20:38,283 INFO L87 Difference]: Start difference. First operand has 1028 states, 635 states have (on average 1.325984251968504) internal successors, (842), 643 states have internal predecessors, (842), 322 states have call successors, (322), 71 states have call predecessors, (322), 70 states have return successors, (316), 314 states have call predecessors, (316), 316 states have call successors, (316) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 00:20:42,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:20:42,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:42,880 INFO L93 Difference]: Finished difference Result 2868 states and 4163 transitions. [2021-11-21 00:20:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:20:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 144 [2021-11-21 00:20:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:42,919 INFO L225 Difference]: With dead ends: 2868 [2021-11-21 00:20:42,919 INFO L226 Difference]: Without dead ends: 1800 [2021-11-21 00:20:42,936 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:20:42,942 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 1193 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:42,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 2785 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 474 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 00:20:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2021-11-21 00:20:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1796. [2021-11-21 00:20:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1134 states have (on average 1.3209876543209877) internal successors, (1498), 1144 states have internal predecessors, (1498), 528 states have call successors, (528), 133 states have call predecessors, (528), 133 states have return successors, (528), 524 states have call predecessors, (528), 528 states have call successors, (528) [2021-11-21 00:20:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2554 transitions. [2021-11-21 00:20:43,156 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2554 transitions. Word has length 144 [2021-11-21 00:20:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:43,157 INFO L470 AbstractCegarLoop]: Abstraction has 1796 states and 2554 transitions. [2021-11-21 00:20:43,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-21 00:20:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2554 transitions. [2021-11-21 00:20:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-21 00:20:43,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:43,165 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:20:43,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:20:43,165 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:20:43,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash -210135046, now seen corresponding path program 1 times [2021-11-21 00:20:43,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:43,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243105234] [2021-11-21 00:20:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:43,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 00:20:43,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:43,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243105234] [2021-11-21 00:20:43,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243105234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:20:43,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:20:43,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:20:43,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591069472] [2021-11-21 00:20:43,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:20:43,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:20:43,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:43,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:20:43,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:20:43,662 INFO L87 Difference]: Start difference. First operand 1796 states and 2554 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:20:48,552 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:20:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:48,661 INFO L93 Difference]: Finished difference Result 4401 states and 6245 transitions. [2021-11-21 00:20:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:20:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 161 [2021-11-21 00:20:48,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:48,685 INFO L225 Difference]: With dead ends: 4401 [2021-11-21 00:20:48,685 INFO L226 Difference]: Without dead ends: 2630 [2021-11-21 00:20:48,694 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:20:48,695 INFO L933 BasicCegarLoop]: 1301 mSDtfsCounter, 591 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:48,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 2458 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 497 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 00:20:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-11-21 00:20:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2624. [2021-11-21 00:20:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2624 states, 1685 states have (on average 1.3299703264094955) internal successors, (2241), 1705 states have internal predecessors, (2241), 730 states have call successors, (730), 208 states have call predecessors, (730), 208 states have return successors, (730), 719 states have call predecessors, (730), 730 states have call successors, (730) [2021-11-21 00:20:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2624 states to 2624 states and 3701 transitions. [2021-11-21 00:20:48,844 INFO L78 Accepts]: Start accepts. Automaton has 2624 states and 3701 transitions. Word has length 161 [2021-11-21 00:20:48,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:48,845 INFO L470 AbstractCegarLoop]: Abstraction has 2624 states and 3701 transitions. [2021-11-21 00:20:48,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:20:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2624 states and 3701 transitions. [2021-11-21 00:20:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-21 00:20:48,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:48,850 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:20:48,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:20:48,850 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:20:48,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:48,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1802838622, now seen corresponding path program 1 times [2021-11-21 00:20:48,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:48,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614055341] [2021-11-21 00:20:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:48,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-21 00:20:49,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:49,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614055341] [2021-11-21 00:20:49,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614055341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:20:49,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:20:49,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:20:49,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232672811] [2021-11-21 00:20:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:20:49,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:20:49,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:49,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:20:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:20:49,199 INFO L87 Difference]: Start difference. First operand 2624 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:20:52,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:20:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:54,085 INFO L93 Difference]: Finished difference Result 6814 states and 9561 transitions. [2021-11-21 00:20:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:20:54,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2021-11-21 00:20:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:54,124 INFO L225 Difference]: With dead ends: 6814 [2021-11-21 00:20:54,124 INFO L226 Difference]: Without dead ends: 4215 [2021-11-21 00:20:54,138 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:20:54,144 INFO L933 BasicCegarLoop]: 1383 mSDtfsCounter, 929 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:54,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 2519 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 494 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 00:20:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2021-11-21 00:20:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 4211. [2021-11-21 00:20:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 2698 states have (on average 1.3113417346182357) internal successors, (3538), 2732 states have internal predecessors, (3538), 1165 states have call successors, (1165), 347 states have call predecessors, (1165), 347 states have return successors, (1171), 1142 states have call predecessors, (1171), 1165 states have call successors, (1171) [2021-11-21 00:20:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 5874 transitions. [2021-11-21 00:20:54,387 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 5874 transitions. Word has length 158 [2021-11-21 00:20:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:54,388 INFO L470 AbstractCegarLoop]: Abstraction has 4211 states and 5874 transitions. [2021-11-21 00:20:54,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-21 00:20:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 5874 transitions. [2021-11-21 00:20:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-21 00:20:54,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:54,393 INFO L514 BasicCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 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] [2021-11-21 00:20:54,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:20:54,393 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:20:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:54,394 INFO L85 PathProgramCache]: Analyzing trace with hash -605742417, now seen corresponding path program 1 times [2021-11-21 00:20:54,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:54,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996312398] [2021-11-21 00:20:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:54,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-11-21 00:20:54,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:54,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996312398] [2021-11-21 00:20:54,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996312398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:20:54,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:20:54,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:20:54,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327873743] [2021-11-21 00:20:54,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:20:54,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:20:54,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:54,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:20:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:20:54,729 INFO L87 Difference]: Start difference. First operand 4211 states and 5874 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:20:59,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:00,082 INFO L93 Difference]: Finished difference Result 12427 states and 17306 transitions. [2021-11-21 00:21:00,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:21:00,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 162 [2021-11-21 00:21:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:00,153 INFO L225 Difference]: With dead ends: 12427 [2021-11-21 00:21:00,153 INFO L226 Difference]: Without dead ends: 8241 [2021-11-21 00:21:00,177 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:21:00,178 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 1168 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:00,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2782 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 544 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-21 00:21:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8241 states. [2021-11-21 00:21:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8241 to 8223. [2021-11-21 00:21:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 5276 states have (on average 1.310841546626232) internal successors, (6916), 5348 states have internal predecessors, (6916), 2254 states have call successors, (2254), 692 states have call predecessors, (2254), 692 states have return successors, (2266), 2201 states have call predecessors, (2266), 2254 states have call successors, (2266) [2021-11-21 00:21:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 11436 transitions. [2021-11-21 00:21:00,735 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 11436 transitions. Word has length 162 [2021-11-21 00:21:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:00,737 INFO L470 AbstractCegarLoop]: Abstraction has 8223 states and 11436 transitions. [2021-11-21 00:21:00,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-21 00:21:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 11436 transitions. [2021-11-21 00:21:00,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-21 00:21:00,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:00,746 INFO L514 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:21:00,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:21:00,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:21:00,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:00,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1861902497, now seen corresponding path program 1 times [2021-11-21 00:21:00,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:00,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469237802] [2021-11-21 00:21:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:00,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:21:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2021-11-21 00:21:01,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:21:01,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469237802] [2021-11-21 00:21:01,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469237802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:21:01,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:21:01,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:21:01,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629219080] [2021-11-21 00:21:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:21:01,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:21:01,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:21:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:21:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:21:01,054 INFO L87 Difference]: Start difference. First operand 8223 states and 11436 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 00:21:05,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:06,037 INFO L93 Difference]: Finished difference Result 17333 states and 23982 transitions. [2021-11-21 00:21:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:21:06,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2021-11-21 00:21:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:06,111 INFO L225 Difference]: With dead ends: 17333 [2021-11-21 00:21:06,111 INFO L226 Difference]: Without dead ends: 9135 [2021-11-21 00:21:06,146 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:21:06,147 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 860 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:06,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 2476 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 471 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 00:21:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2021-11-21 00:21:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 9133. [2021-11-21 00:21:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9133 states, 5836 states have (on average 1.3012337217272105) internal successors, (7594), 5910 states have internal predecessors, (7594), 2484 states have call successors, (2484), 812 states have call predecessors, (2484), 812 states have return successors, (2496), 2429 states have call predecessors, (2496), 2484 states have call successors, (2496) [2021-11-21 00:21:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9133 states to 9133 states and 12574 transitions. [2021-11-21 00:21:06,595 INFO L78 Accepts]: Start accepts. Automaton has 9133 states and 12574 transitions. Word has length 175 [2021-11-21 00:21:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:06,596 INFO L470 AbstractCegarLoop]: Abstraction has 9133 states and 12574 transitions. [2021-11-21 00:21:06,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 00:21:06,596 INFO L276 IsEmpty]: Start isEmpty. Operand 9133 states and 12574 transitions. [2021-11-21 00:21:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-21 00:21:06,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:06,600 INFO L514 BasicCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 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] [2021-11-21 00:21:06,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:21:06,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:21:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1557391182, now seen corresponding path program 1 times [2021-11-21 00:21:06,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:06,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442596266] [2021-11-21 00:21:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:06,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:21:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-11-21 00:21:06,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:21:06,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442596266] [2021-11-21 00:21:06,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442596266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:21:06,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:21:06,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:21:06,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204901480] [2021-11-21 00:21:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:21:06,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:21:06,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:21:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:21:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:21:06,961 INFO L87 Difference]: Start difference. First operand 9133 states and 12574 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 00:21:11,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:11,963 INFO L93 Difference]: Finished difference Result 19994 states and 27459 transitions. [2021-11-21 00:21:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:21:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 179 [2021-11-21 00:21:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:12,029 INFO L225 Difference]: With dead ends: 19994 [2021-11-21 00:21:12,030 INFO L226 Difference]: Without dead ends: 10886 [2021-11-21 00:21:12,067 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:21:12,068 INFO L933 BasicCegarLoop]: 1570 mSDtfsCounter, 587 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:12,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 2751 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 575 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 00:21:12,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10886 states. [2021-11-21 00:21:12,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10886 to 10876. [2021-11-21 00:21:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10876 states, 7036 states have (on average 1.3031552018192154) internal successors, (9169), 7140 states have internal predecessors, (9169), 2857 states have call successors, (2857), 982 states have call predecessors, (2857), 982 states have return successors, (2869), 2780 states have call predecessors, (2869), 2857 states have call successors, (2869) [2021-11-21 00:21:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10876 states to 10876 states and 14895 transitions. [2021-11-21 00:21:12,676 INFO L78 Accepts]: Start accepts. Automaton has 10876 states and 14895 transitions. Word has length 179 [2021-11-21 00:21:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:12,677 INFO L470 AbstractCegarLoop]: Abstraction has 10876 states and 14895 transitions. [2021-11-21 00:21:12,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 00:21:12,677 INFO L276 IsEmpty]: Start isEmpty. Operand 10876 states and 14895 transitions. [2021-11-21 00:21:12,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-21 00:21:12,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:12,685 INFO L514 BasicCegarLoop]: trace histogram [18, 12, 12, 12, 12, 12, 12, 5, 5, 4, 4, 4, 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] [2021-11-21 00:21:12,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:21:12,686 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:21:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash -881142365, now seen corresponding path program 1 times [2021-11-21 00:21:12,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:12,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845860165] [2021-11-21 00:21:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:12,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:21:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2021-11-21 00:21:13,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:21:13,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845860165] [2021-11-21 00:21:13,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845860165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:21:13,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:21:13,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:21:13,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350525426] [2021-11-21 00:21:13,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:21:13,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:21:13,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:21:13,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:21:13,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:21:13,060 INFO L87 Difference]: Start difference. First operand 10876 states and 14895 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 00:21:16,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:18,116 INFO L93 Difference]: Finished difference Result 30644 states and 42019 transitions. [2021-11-21 00:21:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:21:18,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 219 [2021-11-21 00:21:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:18,220 INFO L225 Difference]: With dead ends: 30644 [2021-11-21 00:21:18,220 INFO L226 Difference]: Without dead ends: 19834 [2021-11-21 00:21:18,261 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:21:18,264 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 1105 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:18,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 2789 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 00:21:18,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19834 states. [2021-11-21 00:21:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19834 to 19832. [2021-11-21 00:21:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19832 states, 12936 states have (on average 1.3071273964131107) internal successors, (16909), 13108 states have internal predecessors, (16909), 5101 states have call successors, (5101), 1794 states have call predecessors, (5101), 1794 states have return successors, (5125), 4980 states have call predecessors, (5125), 5101 states have call successors, (5125) [2021-11-21 00:21:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19832 states to 19832 states and 27135 transitions. [2021-11-21 00:21:19,199 INFO L78 Accepts]: Start accepts. Automaton has 19832 states and 27135 transitions. Word has length 219 [2021-11-21 00:21:19,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:19,200 INFO L470 AbstractCegarLoop]: Abstraction has 19832 states and 27135 transitions. [2021-11-21 00:21:19,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 00:21:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 19832 states and 27135 transitions. [2021-11-21 00:21:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-21 00:21:19,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:19,207 INFO L514 BasicCegarLoop]: trace histogram [17, 12, 12, 12, 12, 12, 12, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:21:19,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:21:19,207 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:21:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1709640497, now seen corresponding path program 1 times [2021-11-21 00:21:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:19,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531433049] [2021-11-21 00:21:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:19,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:21:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2021-11-21 00:21:19,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:21:19,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531433049] [2021-11-21 00:21:19,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531433049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:21:19,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:21:19,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:21:19,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998734205] [2021-11-21 00:21:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:21:19,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:21:19,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:21:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:21:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:21:19,637 INFO L87 Difference]: Start difference. First operand 19832 states and 27135 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 00:21:22,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:24,825 INFO L93 Difference]: Finished difference Result 44066 states and 60244 transitions. [2021-11-21 00:21:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:21:24,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 228 [2021-11-21 00:21:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:24,939 INFO L225 Difference]: With dead ends: 44066 [2021-11-21 00:21:24,939 INFO L226 Difference]: Without dead ends: 24300 [2021-11-21 00:21:25,223 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:21:25,225 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 690 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:25,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 2748 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 622 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 00:21:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24300 states. [2021-11-21 00:21:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24300 to 24265. [2021-11-21 00:21:26,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24265 states, 15880 states have (on average 1.3071158690176323) internal successors, (20757), 16124 states have internal predecessors, (20757), 6109 states have call successors, (6109), 2275 states have call predecessors, (6109), 2275 states have return successors, (6133), 5931 states have call predecessors, (6133), 6109 states have call successors, (6133) [2021-11-21 00:21:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24265 states to 24265 states and 32999 transitions. [2021-11-21 00:21:26,396 INFO L78 Accepts]: Start accepts. Automaton has 24265 states and 32999 transitions. Word has length 228 [2021-11-21 00:21:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:26,397 INFO L470 AbstractCegarLoop]: Abstraction has 24265 states and 32999 transitions. [2021-11-21 00:21:26,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 00:21:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 24265 states and 32999 transitions. [2021-11-21 00:21:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-21 00:21:26,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:26,406 INFO L514 BasicCegarLoop]: trace histogram [20, 12, 12, 12, 12, 12, 12, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 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] [2021-11-21 00:21:26,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:21:26,406 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:21:26,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:26,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1088761898, now seen corresponding path program 1 times [2021-11-21 00:21:26,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:26,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773131049] [2021-11-21 00:21:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:26,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:21:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2021-11-21 00:21:27,059 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:21:27,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773131049] [2021-11-21 00:21:27,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773131049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:21:27,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:21:27,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:21:27,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099334451] [2021-11-21 00:21:27,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:21:27,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:21:27,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:21:27,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:21:27,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:21:27,063 INFO L87 Difference]: Start difference. First operand 24265 states and 32999 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 00:21:31,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:36,111 INFO L93 Difference]: Finished difference Result 32725 states and 44419 transitions. [2021-11-21 00:21:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:21:36,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 238 [2021-11-21 00:21:36,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:36,277 INFO L225 Difference]: With dead ends: 32725 [2021-11-21 00:21:36,278 INFO L226 Difference]: Without dead ends: 32723 [2021-11-21 00:21:36,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:21:36,300 INFO L933 BasicCegarLoop]: 1432 mSDtfsCounter, 896 mSDsluCounter, 5963 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:36,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 6461 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1609 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-21 00:21:36,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32723 states. [2021-11-21 00:21:38,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32723 to 32563. [2021-11-21 00:21:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32563 states, 21302 states have (on average 1.2928363533940475) internal successors, (27540), 21646 states have internal predecessors, (27540), 8173 states have call successors, (8173), 3087 states have call predecessors, (8173), 3087 states have return successors, (8197), 7911 states have call predecessors, (8197), 8173 states have call successors, (8197) [2021-11-21 00:21:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32563 states to 32563 states and 43910 transitions. [2021-11-21 00:21:38,331 INFO L78 Accepts]: Start accepts. Automaton has 32563 states and 43910 transitions. Word has length 238 [2021-11-21 00:21:38,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:38,333 INFO L470 AbstractCegarLoop]: Abstraction has 32563 states and 43910 transitions. [2021-11-21 00:21:38,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 00:21:38,334 INFO L276 IsEmpty]: Start isEmpty. Operand 32563 states and 43910 transitions. [2021-11-21 00:21:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2021-11-21 00:21:38,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:38,390 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:21:38,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:21:38,390 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:21:38,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1236286767, now seen corresponding path program 1 times [2021-11-21 00:21:38,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:38,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209171759] [2021-11-21 00:21:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:38,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:21:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2021-11-21 00:21:39,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:21:39,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209171759] [2021-11-21 00:21:39,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209171759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:21:39,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:21:39,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:21:39,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541152011] [2021-11-21 00:21:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:21:39,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:21:39,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:21:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:21:39,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:21:39,322 INFO L87 Difference]: Start difference. First operand 32563 states and 43910 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 00:21:42,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:46,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:46,260 INFO L93 Difference]: Finished difference Result 95980 states and 129474 transitions. [2021-11-21 00:21:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:21:46,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 445 [2021-11-21 00:21:46,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:46,540 INFO L225 Difference]: With dead ends: 95980 [2021-11-21 00:21:46,540 INFO L226 Difference]: Without dead ends: 63501 [2021-11-21 00:21:46,615 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:21:46,615 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1076 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:46,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 2725 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 545 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-21 00:21:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63501 states. [2021-11-21 00:21:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63501 to 63427. [2021-11-21 00:21:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63427 states, 41606 states have (on average 1.2940441282507331) internal successors, (53840), 42306 states have internal predecessors, (53840), 15809 states have call successors, (15809), 6011 states have call predecessors, (15809), 6011 states have return successors, (15905), 15271 states have call predecessors, (15905), 15809 states have call successors, (15905) [2021-11-21 00:21:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63427 states to 63427 states and 85554 transitions. [2021-11-21 00:21:50,431 INFO L78 Accepts]: Start accepts. Automaton has 63427 states and 85554 transitions. Word has length 445 [2021-11-21 00:21:50,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:50,433 INFO L470 AbstractCegarLoop]: Abstraction has 63427 states and 85554 transitions. [2021-11-21 00:21:50,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-21 00:21:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 63427 states and 85554 transitions. [2021-11-21 00:21:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-21 00:21:50,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:50,906 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:21:50,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:21:50,908 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:21:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1836080680, now seen corresponding path program 1 times [2021-11-21 00:21:50,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:50,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911031034] [2021-11-21 00:21:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:50,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:21:51,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2021-11-21 00:21:51,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:21:51,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911031034] [2021-11-21 00:21:51,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911031034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:21:51,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:21:51,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:21:51,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720114807] [2021-11-21 00:21:51,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:21:51,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:21:51,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:21:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:21:51,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:21:51,361 INFO L87 Difference]: Start difference. First operand 63427 states and 85554 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-21 00:21:54,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:21:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:57,709 INFO L93 Difference]: Finished difference Result 110753 states and 149925 transitions. [2021-11-21 00:21:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:21:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 448 [2021-11-21 00:21:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:58,148 INFO L225 Difference]: With dead ends: 110753 [2021-11-21 00:21:58,149 INFO L226 Difference]: Without dead ends: 63438 [2021-11-21 00:21:58,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:21:58,266 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 9 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:58,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2361 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 00:21:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63438 states. [2021-11-21 00:22:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63438 to 63432. [2021-11-21 00:22:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63432 states, 41610 states have (on average 1.2940398942561884) internal successors, (53845), 42310 states have internal predecessors, (53845), 15810 states have call successors, (15810), 6011 states have call predecessors, (15810), 6011 states have return successors, (15906), 15272 states have call predecessors, (15906), 15810 states have call successors, (15906) [2021-11-21 00:22:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63432 states to 63432 states and 85561 transitions. [2021-11-21 00:22:01,489 INFO L78 Accepts]: Start accepts. Automaton has 63432 states and 85561 transitions. Word has length 448 [2021-11-21 00:22:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:01,490 INFO L470 AbstractCegarLoop]: Abstraction has 63432 states and 85561 transitions. [2021-11-21 00:22:01,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-21 00:22:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 63432 states and 85561 transitions. [2021-11-21 00:22:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-21 00:22:01,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:01,605 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:22:01,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:22:01,606 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:22:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:01,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1934186822, now seen corresponding path program 1 times [2021-11-21 00:22:01,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:01,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809073490] [2021-11-21 00:22:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:01,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1382 trivial. 0 not checked. [2021-11-21 00:22:02,140 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:02,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809073490] [2021-11-21 00:22:02,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809073490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:02,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:22:02,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:22:02,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576710654] [2021-11-21 00:22:02,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:02,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:02,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:02,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:02,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:02,144 INFO L87 Difference]: Start difference. First operand 63432 states and 85561 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-21 00:22:05,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:09,671 INFO L93 Difference]: Finished difference Result 129521 states and 178848 transitions. [2021-11-21 00:22:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:09,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 461 [2021-11-21 00:22:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:09,988 INFO L225 Difference]: With dead ends: 129521 [2021-11-21 00:22:09,988 INFO L226 Difference]: Without dead ends: 82201 [2021-11-21 00:22:10,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:22:10,089 INFO L933 BasicCegarLoop]: 1705 mSDtfsCounter, 379 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:10,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 3014 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-21 00:22:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82201 states. [2021-11-21 00:22:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82201 to 63448. [2021-11-21 00:22:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63448 states, 41621 states have (on average 1.2940342615506595) internal successors, (53859), 42321 states have internal predecessors, (53859), 15815 states have call successors, (15815), 6011 states have call predecessors, (15815), 6011 states have return successors, (15911), 15277 states have call predecessors, (15911), 15815 states have call successors, (15911) [2021-11-21 00:22:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63448 states to 63448 states and 85585 transitions. [2021-11-21 00:22:13,501 INFO L78 Accepts]: Start accepts. Automaton has 63448 states and 85585 transitions. Word has length 461 [2021-11-21 00:22:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:13,503 INFO L470 AbstractCegarLoop]: Abstraction has 63448 states and 85585 transitions. [2021-11-21 00:22:13,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-21 00:22:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 63448 states and 85585 transitions. [2021-11-21 00:22:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-21 00:22:13,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:13,576 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:22:13,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:22:13,577 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:22:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2143843682, now seen corresponding path program 1 times [2021-11-21 00:22:13,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:13,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002909539] [2021-11-21 00:22:13,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:13,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2021-11-21 00:22:14,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002909539] [2021-11-21 00:22:14,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002909539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:22:14,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599532137] [2021-11-21 00:22:14,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:14,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:22:14,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:22:14,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:22:14,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:22:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:15,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 7552 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:22:15,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:22:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2021-11-21 00:22:17,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:22:17,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599532137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:17,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:22:17,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:22:17,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071718444] [2021-11-21 00:22:17,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:17,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:17,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:22:17,180 INFO L87 Difference]: Start difference. First operand 63448 states and 85585 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-21 00:22:19,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:25,208 INFO L93 Difference]: Finished difference Result 133180 states and 180441 transitions. [2021-11-21 00:22:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:25,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 479 [2021-11-21 00:22:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:25,728 INFO L225 Difference]: With dead ends: 133180 [2021-11-21 00:22:25,729 INFO L226 Difference]: Without dead ends: 85844 [2021-11-21 00:22:25,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:22:25,878 INFO L933 BasicCegarLoop]: 1486 mSDtfsCounter, 1119 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:25,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 2670 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 467 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 00:22:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85844 states. [2021-11-21 00:22:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85844 to 85746. [2021-11-21 00:22:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85746 states, 56230 states have (on average 1.2968877823226035) internal successors, (72924), 57146 states have internal predecessors, (72924), 21421 states have call successors, (21421), 8094 states have call predecessors, (21421), 8094 states have return successors, (21553), 20701 states have call predecessors, (21553), 21421 states have call successors, (21553) [2021-11-21 00:22:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85746 states to 85746 states and 115898 transitions. [2021-11-21 00:22:29,888 INFO L78 Accepts]: Start accepts. Automaton has 85746 states and 115898 transitions. Word has length 479 [2021-11-21 00:22:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:22:29,889 INFO L470 AbstractCegarLoop]: Abstraction has 85746 states and 115898 transitions. [2021-11-21 00:22:29,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-21 00:22:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 85746 states and 115898 transitions. [2021-11-21 00:22:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-21 00:22:29,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:22:29,962 INFO L514 BasicCegarLoop]: trace histogram [22, 14, 14, 14, 14, 14, 14, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:22:30,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:22:30,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:22:30,177 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:22:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:22:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash 969573533, now seen corresponding path program 1 times [2021-11-21 00:22:30,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:22:30,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846196273] [2021-11-21 00:22:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:30,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:22:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2021-11-21 00:22:31,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:22:31,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846196273] [2021-11-21 00:22:31,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846196273] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:22:31,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236677349] [2021-11-21 00:22:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:22:31,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:22:31,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:22:31,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:22:31,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bec4569d-c3cf-462c-a573-40bbef59d0db/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:22:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:22:32,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 7563 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:22:32,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:22:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2021-11-21 00:22:34,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:22:34,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236677349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:22:34,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:22:34,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:22:34,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127528378] [2021-11-21 00:22:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:22:34,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:22:34,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:22:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:22:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:22:34,013 INFO L87 Difference]: Start difference. First operand 85746 states and 115898 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-21 00:22:36,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:22:42,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:22:42,160 INFO L93 Difference]: Finished difference Result 179866 states and 244516 transitions. [2021-11-21 00:22:42,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:22:42,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (61), 3 states have call predecessors, (61), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 491 [2021-11-21 00:22:42,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:22:42,598 INFO L225 Difference]: With dead ends: 179866 [2021-11-21 00:22:42,598 INFO L226 Difference]: Without dead ends: 110232 [2021-11-21 00:22:43,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:22:43,026 INFO L933 BasicCegarLoop]: 1398 mSDtfsCounter, 1022 mSDsluCounter, 1244 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:22:43,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1022 Valid, 2465 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 00:22:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110232 states.