./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-wireless-orinoco-orinoco_usb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V --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 b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:52:48,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:52:48,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:52:48,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:52:48,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:52:48,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:52:48,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:52:48,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:52:48,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:52:48,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:52:48,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:52:48,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:52:48,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:52:48,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:52:48,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:52:48,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:52:48,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:52:48,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:52:48,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:52:48,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:52:48,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:52:48,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:52:48,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:52:48,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:52:48,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:52:48,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:52:48,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:52:48,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:52:48,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:52:48,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:52:48,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:52:48,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:52:48,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:52:48,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:52:48,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:52:48,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:52:48,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:52:48,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:52:48,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:52:48,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:52:48,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:52:48,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:52:48,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:52:48,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:52:48,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:52:48,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:52:48,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:52:48,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:52:48,830 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:52:48,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:52:48,830 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:52:48,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:52:48,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:52:48,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:52:48,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:52:48,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:52:48,832 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:52:48,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:52:48,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:52:48,832 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:52:48,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:52:48,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:52:48,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:52:48,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:52:48,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:52:48,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:52:48,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:52:48,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:52:48,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:52:48,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:52:48,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:52:48,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:52:48,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:52:48,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:52:48,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:52:48,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:52:48,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:52:48,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:52:48,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:52:48,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:52:48,838 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_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 [2021-11-23 03:52:49,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:52:49,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:52:49,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:52:49,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:52:49,128 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:52:49,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-23 03:52:49,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/data/bb3e3bce1/e124eb7bc3f2479d9a3a6631619c28da/FLAGeecea3275 [2021-11-23 03:52:50,200 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:52:50,201 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-23 03:52:50,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/data/bb3e3bce1/e124eb7bc3f2479d9a3a6631619c28da/FLAGeecea3275 [2021-11-23 03:52:50,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/data/bb3e3bce1/e124eb7bc3f2479d9a3a6631619c28da [2021-11-23 03:52:50,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:52:50,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:52:50,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:52:50,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:52:50,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:52:50,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:50" (1/1) ... [2021-11-23 03:52:50,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e746d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:50, skipping insertion in model container [2021-11-23 03:52:50,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:52:50" (1/1) ... [2021-11-23 03:52:50,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:52:50,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:52:54,299 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_e34173c7-a858-4a95-98ed-55918501c6b5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357318,357331] [2021-11-23 03:52:54,304 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_e34173c7-a858-4a95-98ed-55918501c6b5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357463,357476] [2021-11-23 03:52:54,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:52:54,416 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:52:54,858 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_e34173c7-a858-4a95-98ed-55918501c6b5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357318,357331] [2021-11-23 03:52:54,860 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_e34173c7-a858-4a95-98ed-55918501c6b5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i[357463,357476] [2021-11-23 03:52:54,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:52:55,123 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:52:55,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55 WrapperNode [2021-11-23 03:52:55,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:52:55,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:52:55,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:52:55,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:52:55,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,513 INFO L137 Inliner]: procedures = 421, calls = 1839, calls flagged for inlining = 205, calls inlined = 179, statements flattened = 4228 [2021-11-23 03:52:55,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:52:55,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:52:55,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:52:55,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:52:55,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:52:55,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:52:55,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:52:55,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:52:55,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (1/1) ... [2021-11-23 03:52:55,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:52:55,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:52:55,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:52:55,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34173c7-a858-4a95-98ed-55918501c6b5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:52:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure build_crc [2021-11-23 03:52:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure build_crc [2021-11-23 03:52:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_set_multicast_list [2021-11-23 03:52:55,863 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_set_multicast_list [2021-11-23 03:52:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:52:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:52:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-23 03:52:55,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-23 03:52:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:52:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:52:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_lock_irqsave [2021-11-23 03:52:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_lock_irqsave [2021-11-23 03:52:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 03:52:55,865 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 03:52:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:52:55,866 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:52:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure free_orinocodev [2021-11-23 03:52:55,867 INFO L138 BoogieDeclarations]: Found implementation of procedure free_orinocodev [2021-11-23 03:52:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:52:55,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:52:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:52:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:52:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:52:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:52:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_8051_cpucs [2021-11-23 03:52:55,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_8051_cpucs [2021-11-23 03:52:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:52:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:52:55,869 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:52:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_unlock [2021-11-23 03:52:55,870 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_unlock [2021-11-23 03:52:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_open [2021-11-23 03:52:55,870 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_open [2021-11-23 03:52:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:52:55,870 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:52:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 03:52:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 03:52:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_unlock_irqrestore [2021-11-23 03:52:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_unlock_irqrestore [2021-11-23 03:52:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:52:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_disconnect [2021-11-23 03:52:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_disconnect [2021-11-23 03:52:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:52:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:52:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:52:55,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:52:55,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:52:55,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:52:55,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-23 03:52:55,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-23 03:52:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:52:55,876 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:52:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_init [2021-11-23 03:52:55,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_init [2021-11-23 03:52:55,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:52:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:52:55,877 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-23 03:52:55,877 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-23 03:52:55,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 03:52:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 03:52:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_hard_reset [2021-11-23 03:52:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_hard_reset [2021-11-23 03:52:55,879 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 03:52:55,879 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 03:52:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:52:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 03:52:55,880 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 03:52:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:52:55,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:52:55,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:52:55,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:52:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:52:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:52:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:52:55,882 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-23 03:52:55,882 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-23 03:52:55,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:52:55,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:52:55,883 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_request_context_put [2021-11-23 03:52:55,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_request_context_put [2021-11-23 03:52:55,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-23 03:52:55,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-23 03:52:55,884 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-23 03:52:55,885 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-23 03:52:55,885 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_submit_in_urb [2021-11-23 03:52:55,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_submit_in_urb [2021-11-23 03:52:55,886 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 03:52:55,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 03:52:55,886 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:52:55,886 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:52:55,887 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_lock_irq [2021-11-23 03:52:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_lock_irq [2021-11-23 03:52:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:52:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:52:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure ndev_priv [2021-11-23 03:52:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ndev_priv [2021-11-23 03:52:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 03:52:55,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 03:52:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:52:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:52:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:52:55,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:52:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-23 03:52:55,890 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-23 03:52:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_unlock_irq [2021-11-23 03:52:55,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_unlock_irq [2021-11-23 03:52:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:52:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:52:55,892 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:52:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-23 03:52:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-23 03:52:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:52:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-23 03:52:55,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-23 03:52:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_121 [2021-11-23 03:52:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_121 [2021-11-23 03:52:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:52:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_tx_timeout [2021-11-23 03:52:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_tx_timeout [2021-11-23 03:52:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_program_end [2021-11-23 03:52:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_program_end [2021-11-23 03:52:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-23 03:52:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-23 03:52:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:52:55,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:52:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:52:55,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:52:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_orinoco_driver_exit_10_2 [2021-11-23 03:52:55,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_orinoco_driver_exit_10_2 [2021-11-23 03:52:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_stop [2021-11-23 03:52:55,907 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_stop [2021-11-23 03:52:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_access_ltv [2021-11-23 03:52:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_access_ltv [2021-11-23 03:52:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 03:52:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 03:52:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_write_ltv [2021-11-23 03:52:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_write_ltv [2021-11-23 03:52:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_mod_timer [2021-11-23 03:52:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_mod_timer [2021-11-23 03:52:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 03:52:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 03:52:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-23 03:52:55,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-23 03:52:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:52:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:52:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_req_queue_run [2021-11-23 03:52:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_req_queue_run [2021-11-23 03:52:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:52:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:52:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_122 [2021-11-23 03:52:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_122 [2021-11-23 03:52:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_ctx_complete [2021-11-23 03:52:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_ctx_complete [2021-11-23 03:52:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_delete [2021-11-23 03:52:55,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_delete [2021-11-23 03:52:55,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:52:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_alloc_ctx [2021-11-23 03:52:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_alloc_ctx [2021-11-23 03:52:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:52:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:52:55,912 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 03:52:55,912 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 03:52:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_reply_inc [2021-11-23 03:52:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_reply_inc [2021-11-23 03:52:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_req_lock_of_ezusb_priv [2021-11-23 03:52:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_req_lock_of_ezusb_priv [2021-11-23 03:52:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_docmd_wait [2021-11-23 03:52:55,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_docmd_wait [2021-11-23 03:52:55,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:52:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:52:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2021-11-23 03:52:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2021-11-23 03:52:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:52:55,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:52:55,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:52:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_complete_all [2021-11-23 03:52:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_complete_all [2021-11-23 03:52:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:52:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:52:55,915 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-23 03:52:55,915 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-23 03:52:56,896 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:52:56,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:52:57,403 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:53:00,191 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:53:00,300 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:53:01,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:53:01,133 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:53:01,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:53:01 BoogieIcfgContainer [2021-11-23 03:53:01,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:53:01,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:53:01,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:53:01,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:53:01,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:52:50" (1/3) ... [2021-11-23 03:53:01,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6831ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:53:01, skipping insertion in model container [2021-11-23 03:53:01,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:52:55" (2/3) ... [2021-11-23 03:53:01,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6831ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:53:01, skipping insertion in model container [2021-11-23 03:53:01,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:53:01" (3/3) ... [2021-11-23 03:53:01,147 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-23 03:53:01,153 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:53:01,153 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:53:01,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:53:01,236 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 [2021-11-23 03:53:01,237 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:53:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 647 states have (on average 1.3415765069551777) internal successors, (868), 660 states have internal predecessors, (868), 358 states have call successors, (358), 82 states have call predecessors, (358), 81 states have return successors, (351), 347 states have call predecessors, (351), 351 states have call successors, (351) [2021-11-23 03:53:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-23 03:53:01,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:01,324 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:01,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1855026837, now seen corresponding path program 1 times [2021-11-23 03:53:01,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:01,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542158994] [2021-11-23 03:53:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:01,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-23 03:53:02,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:02,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542158994] [2021-11-23 03:53:02,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542158994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:02,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:02,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:02,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859602567] [2021-11-23 03:53:02,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:02,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:02,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:02,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:02,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:02,346 INFO L87 Difference]: Start difference. First operand has 1087 states, 647 states have (on average 1.3415765069551777) internal successors, (868), 660 states have internal predecessors, (868), 358 states have call successors, (358), 82 states have call predecessors, (358), 81 states have return successors, (351), 347 states have call predecessors, (351), 351 states have call successors, (351) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:53:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:04,390 INFO L93 Difference]: Finished difference Result 3021 states and 4455 transitions. [2021-11-23 03:53:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 179 [2021-11-23 03:53:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:04,437 INFO L225 Difference]: With dead ends: 3021 [2021-11-23 03:53:04,437 INFO L226 Difference]: Without dead ends: 1900 [2021-11-23 03:53:04,453 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 [2021-11-23 03:53:04,457 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 1252 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:04,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2974 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:53:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-11-23 03:53:04,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1896. [2021-11-23 03:53:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1150 states have (on average 1.3269565217391304) internal successors, (1526), 1176 states have internal predecessors, (1526), 589 states have call successors, (589), 156 states have call predecessors, (589), 156 states have return successors, (589), 579 states have call predecessors, (589), 589 states have call successors, (589) [2021-11-23 03:53:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2704 transitions. [2021-11-23 03:53:04,714 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2704 transitions. Word has length 179 [2021-11-23 03:53:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:04,716 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 2704 transitions. [2021-11-23 03:53:04,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:53:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2704 transitions. [2021-11-23 03:53:04,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-23 03:53:04,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:04,727 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:04,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:53:04,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:04,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1544071272, now seen corresponding path program 1 times [2021-11-23 03:53:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632771526] [2021-11-23 03:53:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:04,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-23 03:53:05,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:05,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632771526] [2021-11-23 03:53:05,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632771526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:05,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:05,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:05,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028464440] [2021-11-23 03:53:05,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:05,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:05,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:05,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:05,094 INFO L87 Difference]: Start difference. First operand 1896 states and 2704 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, (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) [2021-11-23 03:53:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:06,812 INFO L93 Difference]: Finished difference Result 5065 states and 7211 transitions. [2021-11-23 03:53:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:06,812 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, (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 186 [2021-11-23 03:53:06,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:06,848 INFO L225 Difference]: With dead ends: 5065 [2021-11-23 03:53:06,849 INFO L226 Difference]: Without dead ends: 3200 [2021-11-23 03:53:06,862 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 [2021-11-23 03:53:06,868 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1075 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:06,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 2959 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 03:53:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2021-11-23 03:53:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3194. [2021-11-23 03:53:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 1947 states have (on average 1.3271700051361068) internal successors, (2584), 1997 states have internal predecessors, (2584), 971 states have call successors, (971), 275 states have call predecessors, (971), 275 states have return successors, (971), 947 states have call predecessors, (971), 971 states have call successors, (971) [2021-11-23 03:53:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4526 transitions. [2021-11-23 03:53:07,108 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4526 transitions. Word has length 186 [2021-11-23 03:53:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:07,112 INFO L470 AbstractCegarLoop]: Abstraction has 3194 states and 4526 transitions. [2021-11-23 03:53:07,112 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, (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) [2021-11-23 03:53:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4526 transitions. [2021-11-23 03:53:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-23 03:53:07,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:07,125 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 15, 15, 15, 15, 15, 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] [2021-11-23 03:53:07,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:53:07,126 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:07,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 65689459, now seen corresponding path program 1 times [2021-11-23 03:53:07,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:07,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874676224] [2021-11-23 03:53:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:07,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-23 03:53:07,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:07,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874676224] [2021-11-23 03:53:07,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874676224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:07,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:07,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:07,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102310898] [2021-11-23 03:53:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:07,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:07,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:07,453 INFO L87 Difference]: Start difference. First operand 3194 states and 4526 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 03:53:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:09,318 INFO L93 Difference]: Finished difference Result 7702 states and 10868 transitions. [2021-11-23 03:53:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 196 [2021-11-23 03:53:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:09,371 INFO L225 Difference]: With dead ends: 7702 [2021-11-23 03:53:09,372 INFO L226 Difference]: Without dead ends: 4539 [2021-11-23 03:53:09,394 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 [2021-11-23 03:53:09,396 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1168 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:09,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2754 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 03:53:09,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2021-11-23 03:53:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4537. [2021-11-23 03:53:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 2767 states have (on average 1.321647994217564) internal successors, (3657), 2840 states have internal predecessors, (3657), 1359 states have call successors, (1359), 410 states have call predecessors, (1359), 410 states have return successors, (1359), 1325 states have call predecessors, (1359), 1359 states have call successors, (1359) [2021-11-23 03:53:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6375 transitions. [2021-11-23 03:53:09,732 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6375 transitions. Word has length 196 [2021-11-23 03:53:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:09,734 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6375 transitions. [2021-11-23 03:53:09,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 03:53:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6375 transitions. [2021-11-23 03:53:09,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 03:53:09,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:09,745 INFO L514 BasicCegarLoop]: trace histogram [17, 15, 15, 15, 15, 15, 15, 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] [2021-11-23 03:53:09,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:53:09,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1265916073, now seen corresponding path program 1 times [2021-11-23 03:53:09,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:09,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224835748] [2021-11-23 03:53:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:09,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-23 03:53:10,071 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:10,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224835748] [2021-11-23 03:53:10,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224835748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:10,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:10,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:10,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295565287] [2021-11-23 03:53:10,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:10,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:10,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:10,076 INFO L87 Difference]: Start difference. First operand 4537 states and 6375 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 03:53:11,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:11,957 INFO L93 Difference]: Finished difference Result 9531 states and 13376 transitions. [2021-11-23 03:53:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:11,958 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 204 [2021-11-23 03:53:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:12,018 INFO L225 Difference]: With dead ends: 9531 [2021-11-23 03:53:12,019 INFO L226 Difference]: Without dead ends: 5025 [2021-11-23 03:53:12,049 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 [2021-11-23 03:53:12,054 INFO L933 BasicCegarLoop]: 1942 mSDtfsCounter, 1070 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:12,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3205 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 03:53:12,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2021-11-23 03:53:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 5021. [2021-11-23 03:53:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5021 states, 3072 states have (on average 1.3216145833333333) internal successors, (4060), 3153 states have internal predecessors, (4060), 1489 states have call successors, (1489), 459 states have call predecessors, (1489), 459 states have return successors, (1489), 1449 states have call predecessors, (1489), 1489 states have call successors, (1489) [2021-11-23 03:53:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7038 transitions. [2021-11-23 03:53:12,478 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7038 transitions. Word has length 204 [2021-11-23 03:53:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:12,479 INFO L470 AbstractCegarLoop]: Abstraction has 5021 states and 7038 transitions. [2021-11-23 03:53:12,481 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-23 03:53:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7038 transitions. [2021-11-23 03:53:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-23 03:53:12,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:12,489 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:12,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:53:12,489 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash 465227741, now seen corresponding path program 1 times [2021-11-23 03:53:12,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:12,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585695740] [2021-11-23 03:53:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:12,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2021-11-23 03:53:12,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585695740] [2021-11-23 03:53:12,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585695740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:12,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:12,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:12,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046274946] [2021-11-23 03:53:12,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:12,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:12,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:12,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:12,713 INFO L87 Difference]: Start difference. First operand 5021 states and 7038 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-23 03:53:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:14,394 INFO L93 Difference]: Finished difference Result 12687 states and 17795 transitions. [2021-11-23 03:53:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 239 [2021-11-23 03:53:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:14,474 INFO L225 Difference]: With dead ends: 12687 [2021-11-23 03:53:14,474 INFO L226 Difference]: Without dead ends: 7697 [2021-11-23 03:53:14,506 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 [2021-11-23 03:53:14,508 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1283 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:14,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2809 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 03:53:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2021-11-23 03:53:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 7683. [2021-11-23 03:53:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7683 states, 4716 states have (on average 1.3127650551314674) internal successors, (6191), 4846 states have internal predecessors, (6191), 2282 states have call successors, (2282), 684 states have call predecessors, (2282), 684 states have return successors, (2282), 2210 states have call predecessors, (2282), 2282 states have call successors, (2282) [2021-11-23 03:53:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 10755 transitions. [2021-11-23 03:53:15,070 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 10755 transitions. Word has length 239 [2021-11-23 03:53:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:15,071 INFO L470 AbstractCegarLoop]: Abstraction has 7683 states and 10755 transitions. [2021-11-23 03:53:15,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-23 03:53:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 10755 transitions. [2021-11-23 03:53:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-23 03:53:15,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:15,080 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 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] [2021-11-23 03:53:15,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:53:15,080 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash 694550174, now seen corresponding path program 1 times [2021-11-23 03:53:15,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:15,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753163410] [2021-11-23 03:53:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:15,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2021-11-23 03:53:15,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:15,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753163410] [2021-11-23 03:53:15,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753163410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:15,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:15,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:15,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616184209] [2021-11-23 03:53:15,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:15,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:15,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:15,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:15,390 INFO L87 Difference]: Start difference. First operand 7683 states and 10755 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-23 03:53:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:17,795 INFO L93 Difference]: Finished difference Result 18123 states and 25340 transitions. [2021-11-23 03:53:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:17,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 240 [2021-11-23 03:53:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:17,907 INFO L225 Difference]: With dead ends: 18123 [2021-11-23 03:53:17,908 INFO L226 Difference]: Without dead ends: 10515 [2021-11-23 03:53:17,960 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 [2021-11-23 03:53:17,961 INFO L933 BasicCegarLoop]: 2264 mSDtfsCounter, 1190 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:17,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 3482 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:53:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2021-11-23 03:53:18,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 10501. [2021-11-23 03:53:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 6440 states have (on average 1.310248447204969) internal successors, (8438), 6634 states have internal predecessors, (8438), 3103 states have call successors, (3103), 957 states have call predecessors, (3103), 957 states have return successors, (3103), 2992 states have call predecessors, (3103), 3103 states have call successors, (3103) [2021-11-23 03:53:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 14644 transitions. [2021-11-23 03:53:18,617 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 14644 transitions. Word has length 240 [2021-11-23 03:53:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:18,618 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 14644 transitions. [2021-11-23 03:53:18,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-23 03:53:18,619 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 14644 transitions. [2021-11-23 03:53:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-23 03:53:18,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:18,632 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1] [2021-11-23 03:53:18,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:53:18,633 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:18,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:18,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2139934352, now seen corresponding path program 1 times [2021-11-23 03:53:18,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:18,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893708920] [2021-11-23 03:53:18,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:18,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2021-11-23 03:53:18,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:18,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893708920] [2021-11-23 03:53:18,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893708920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:18,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:18,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:18,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166431476] [2021-11-23 03:53:18,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:18,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:18,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:18,890 INFO L87 Difference]: Start difference. First operand 10501 states and 14644 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, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 03:53:21,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:21,117 INFO L93 Difference]: Finished difference Result 24989 states and 34821 transitions. [2021-11-23 03:53:21,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:21,118 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, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 253 [2021-11-23 03:53:21,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:21,210 INFO L225 Difference]: With dead ends: 24989 [2021-11-23 03:53:21,210 INFO L226 Difference]: Without dead ends: 14563 [2021-11-23 03:53:21,256 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 [2021-11-23 03:53:21,258 INFO L933 BasicCegarLoop]: 2155 mSDtfsCounter, 1338 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:21,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 3274 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 03:53:21,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14563 states. [2021-11-23 03:53:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14563 to 14549. [2021-11-23 03:53:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14549 states, 8865 states have (on average 1.3037789058093627) internal successors, (11558), 9145 states have internal predecessors, (11558), 4318 states have call successors, (4318), 1365 states have call predecessors, (4318), 1365 states have return successors, (4318), 4160 states have call predecessors, (4318), 4318 states have call successors, (4318) [2021-11-23 03:53:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14549 states to 14549 states and 20194 transitions. [2021-11-23 03:53:22,105 INFO L78 Accepts]: Start accepts. Automaton has 14549 states and 20194 transitions. Word has length 253 [2021-11-23 03:53:22,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:22,106 INFO L470 AbstractCegarLoop]: Abstraction has 14549 states and 20194 transitions. [2021-11-23 03:53:22,106 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, (31), 2 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 03:53:22,106 INFO L276 IsEmpty]: Start isEmpty. Operand 14549 states and 20194 transitions. [2021-11-23 03:53:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-23 03:53:22,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:22,117 INFO L514 BasicCegarLoop]: trace histogram [22, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 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] [2021-11-23 03:53:22,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:53:22,117 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:22,118 INFO L85 PathProgramCache]: Analyzing trace with hash 598747403, now seen corresponding path program 1 times [2021-11-23 03:53:22,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:22,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887501055] [2021-11-23 03:53:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:22,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2021-11-23 03:53:22,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:22,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887501055] [2021-11-23 03:53:22,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887501055] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:22,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:22,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:53:22,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624224937] [2021-11-23 03:53:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:22,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:53:22,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:53:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:53:22,361 INFO L87 Difference]: Start difference. First operand 14549 states and 20194 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 03:53:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:26,043 INFO L93 Difference]: Finished difference Result 33217 states and 46026 transitions. [2021-11-23 03:53:26,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:53:26,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 256 [2021-11-23 03:53:26,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:26,186 INFO L225 Difference]: With dead ends: 33217 [2021-11-23 03:53:26,186 INFO L226 Difference]: Without dead ends: 18743 [2021-11-23 03:53:26,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:53:26,272 INFO L933 BasicCegarLoop]: 2264 mSDtfsCounter, 1279 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3944 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:26,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3944 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-23 03:53:26,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18743 states. [2021-11-23 03:53:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18743 to 18725. [2021-11-23 03:53:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18725 states, 11396 states have (on average 1.3003685503685503) internal successors, (14819), 11770 states have internal predecessors, (14819), 5526 states have call successors, (5526), 1802 states have call predecessors, (5526), 1802 states have return successors, (5526), 5312 states have call predecessors, (5526), 5526 states have call successors, (5526) [2021-11-23 03:53:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18725 states to 18725 states and 25871 transitions. [2021-11-23 03:53:27,584 INFO L78 Accepts]: Start accepts. Automaton has 18725 states and 25871 transitions. Word has length 256 [2021-11-23 03:53:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:27,587 INFO L470 AbstractCegarLoop]: Abstraction has 18725 states and 25871 transitions. [2021-11-23 03:53:27,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 03:53:27,587 INFO L276 IsEmpty]: Start isEmpty. Operand 18725 states and 25871 transitions. [2021-11-23 03:53:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-23 03:53:27,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:27,607 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:53:27,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:53:27,607 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:27,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1445339356, now seen corresponding path program 1 times [2021-11-23 03:53:27,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:27,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930493265] [2021-11-23 03:53:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:27,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-23 03:53:27,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:27,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930493265] [2021-11-23 03:53:27,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930493265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:27,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:27,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:53:27,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746355501] [2021-11-23 03:53:27,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:27,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:53:27,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:27,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:53:27,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:53:27,879 INFO L87 Difference]: Start difference. First operand 18725 states and 25871 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-23 03:53:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:31,251 INFO L93 Difference]: Finished difference Result 47209 states and 66296 transitions. [2021-11-23 03:53:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:53:31,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 293 [2021-11-23 03:53:31,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:31,437 INFO L225 Difference]: With dead ends: 47209 [2021-11-23 03:53:31,437 INFO L226 Difference]: Without dead ends: 28559 [2021-11-23 03:53:31,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:53:31,521 INFO L933 BasicCegarLoop]: 2437 mSDtfsCounter, 1790 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 6175 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:31,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 6175 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:53:31,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28559 states. [2021-11-23 03:53:32,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28559 to 22781. [2021-11-23 03:53:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22781 states, 13859 states have (on average 1.2990836279673859) internal successors, (18004), 14327 states have internal predecessors, (18004), 6710 states have call successors, (6710), 2211 states have call predecessors, (6710), 2211 states have return successors, (6710), 6440 states have call predecessors, (6710), 6710 states have call successors, (6710) [2021-11-23 03:53:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22781 states to 22781 states and 31424 transitions. [2021-11-23 03:53:33,118 INFO L78 Accepts]: Start accepts. Automaton has 22781 states and 31424 transitions. Word has length 293 [2021-11-23 03:53:33,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:33,119 INFO L470 AbstractCegarLoop]: Abstraction has 22781 states and 31424 transitions. [2021-11-23 03:53:33,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-23 03:53:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 22781 states and 31424 transitions. [2021-11-23 03:53:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-23 03:53:33,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:33,138 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:53:33,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:53:33,139 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:33,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2011700145, now seen corresponding path program 1 times [2021-11-23 03:53:33,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:33,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098514594] [2021-11-23 03:53:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:33,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-23 03:53:33,441 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:33,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098514594] [2021-11-23 03:53:33,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098514594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:33,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:33,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:53:33,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483554199] [2021-11-23 03:53:33,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:33,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:53:33,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:33,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:53:33,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:53:33,444 INFO L87 Difference]: Start difference. First operand 22781 states and 31424 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-23 03:53:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:37,142 INFO L93 Difference]: Finished difference Result 55361 states and 77476 transitions. [2021-11-23 03:53:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:53:37,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 294 [2021-11-23 03:53:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:37,386 INFO L225 Difference]: With dead ends: 55361 [2021-11-23 03:53:37,386 INFO L226 Difference]: Without dead ends: 32655 [2021-11-23 03:53:37,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:53:37,503 INFO L933 BasicCegarLoop]: 2423 mSDtfsCounter, 1818 mSDsluCounter, 4355 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:37,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 6131 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 03:53:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32655 states. [2021-11-23 03:53:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32655 to 26877. [2021-11-23 03:53:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26877 states, 16360 states have (on average 1.2977383863080685) internal successors, (21231), 16922 states have internal predecessors, (21231), 7894 states have call successors, (7894), 2622 states have call predecessors, (7894), 2622 states have return successors, (7894), 7568 states have call predecessors, (7894), 7894 states have call successors, (7894) [2021-11-23 03:53:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26877 states to 26877 states and 37019 transitions. [2021-11-23 03:53:39,593 INFO L78 Accepts]: Start accepts. Automaton has 26877 states and 37019 transitions. Word has length 294 [2021-11-23 03:53:39,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:39,596 INFO L470 AbstractCegarLoop]: Abstraction has 26877 states and 37019 transitions. [2021-11-23 03:53:39,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-23 03:53:39,597 INFO L276 IsEmpty]: Start isEmpty. Operand 26877 states and 37019 transitions. [2021-11-23 03:53:39,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-23 03:53:39,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:39,619 INFO L514 BasicCegarLoop]: trace histogram [20, 15, 15, 15, 15, 15, 15, 5, 5, 3, 3, 3, 3, 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] [2021-11-23 03:53:39,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:53:39,620 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:39,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 644161652, now seen corresponding path program 1 times [2021-11-23 03:53:39,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481061629] [2021-11-23 03:53:39,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:39,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2021-11-23 03:53:39,849 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:39,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481061629] [2021-11-23 03:53:39,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481061629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:39,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:39,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:39,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201657193] [2021-11-23 03:53:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:39,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:39,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:39,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:39,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:39,853 INFO L87 Difference]: Start difference. First operand 26877 states and 37019 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-23 03:53:42,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:42,970 INFO L93 Difference]: Finished difference Result 63920 states and 88030 transitions. [2021-11-23 03:53:42,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:42,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 299 [2021-11-23 03:53:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:43,159 INFO L225 Difference]: With dead ends: 63920 [2021-11-23 03:53:43,159 INFO L226 Difference]: Without dead ends: 37118 [2021-11-23 03:53:43,312 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 [2021-11-23 03:53:43,313 INFO L933 BasicCegarLoop]: 2352 mSDtfsCounter, 1283 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:43,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 3595 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:53:43,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37118 states. [2021-11-23 03:53:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37118 to 37068. [2021-11-23 03:53:45,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37068 states, 22564 states have (on average 1.293210423683744) internal successors, (29180), 23372 states have internal predecessors, (29180), 10891 states have call successors, (10891), 3612 states have call predecessors, (10891), 3612 states have return successors, (10891), 10405 states have call predecessors, (10891), 10891 states have call successors, (10891) [2021-11-23 03:53:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37068 states to 37068 states and 50962 transitions. [2021-11-23 03:53:45,246 INFO L78 Accepts]: Start accepts. Automaton has 37068 states and 50962 transitions. Word has length 299 [2021-11-23 03:53:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:45,247 INFO L470 AbstractCegarLoop]: Abstraction has 37068 states and 50962 transitions. [2021-11-23 03:53:45,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-23 03:53:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 37068 states and 50962 transitions. [2021-11-23 03:53:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-23 03:53:45,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:45,272 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:53:45,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:53:45,272 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash -254115647, now seen corresponding path program 1 times [2021-11-23 03:53:45,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:45,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447040703] [2021-11-23 03:53:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:45,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1257 trivial. 0 not checked. [2021-11-23 03:53:45,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:45,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447040703] [2021-11-23 03:53:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447040703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:45,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:45,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:53:45,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081387884] [2021-11-23 03:53:45,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:45,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:53:45,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:45,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:53:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:53:45,617 INFO L87 Difference]: Start difference. First operand 37068 states and 50962 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-23 03:53:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:49,760 INFO L93 Difference]: Finished difference Result 108696 states and 149472 transitions. [2021-11-23 03:53:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:53:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 295 [2021-11-23 03:53:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:50,345 INFO L225 Difference]: With dead ends: 108696 [2021-11-23 03:53:50,345 INFO L226 Difference]: Without dead ends: 71703 [2021-11-23 03:53:50,451 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 [2021-11-23 03:53:50,451 INFO L933 BasicCegarLoop]: 2148 mSDtfsCounter, 1409 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:50,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 3395 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 03:53:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71703 states. [2021-11-23 03:53:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71703 to 71701. [2021-11-23 03:53:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71701 states, 43934 states have (on average 1.2912323029999544) internal successors, (56729), 45316 states have internal predecessors, (56729), 20758 states have call successors, (20758), 7008 states have call predecessors, (20758), 7008 states have return successors, (20758), 20020 states have call predecessors, (20758), 20758 states have call successors, (20758) [2021-11-23 03:53:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71701 states to 71701 states and 98245 transitions. [2021-11-23 03:53:53,881 INFO L78 Accepts]: Start accepts. Automaton has 71701 states and 98245 transitions. Word has length 295 [2021-11-23 03:53:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:53,882 INFO L470 AbstractCegarLoop]: Abstraction has 71701 states and 98245 transitions. [2021-11-23 03:53:53,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-23 03:53:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 71701 states and 98245 transitions. [2021-11-23 03:53:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-23 03:53:53,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:53,913 INFO L514 BasicCegarLoop]: trace histogram [26, 15, 15, 15, 15, 15, 15, 7, 7, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:53:53,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:53:53,914 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 866157736, now seen corresponding path program 1 times [2021-11-23 03:53:53,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:53,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304987590] [2021-11-23 03:53:53,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:53,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-23 03:53:54,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:54,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304987590] [2021-11-23 03:53:54,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304987590] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:54,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:54,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:53:54,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892487309] [2021-11-23 03:53:54,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:54,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:53:54,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:54,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:53:54,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:53:54,952 INFO L87 Difference]: Start difference. First operand 71701 states and 98245 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:54:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:05,073 INFO L93 Difference]: Finished difference Result 119519 states and 164204 transitions. [2021-11-23 03:54:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:54:05,074 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 316 [2021-11-23 03:54:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:05,793 INFO L225 Difference]: With dead ends: 119519 [2021-11-23 03:54:05,795 INFO L226 Difference]: Without dead ends: 119517 [2021-11-23 03:54:05,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:54:05,853 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1047 mSDsluCounter, 6302 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:05,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 6888 Invalid, 1833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 03:54:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119517 states. [2021-11-23 03:54:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119517 to 118861. [2021-11-23 03:54:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118861 states, 73448 states have (on average 1.2813010565297898) internal successors, (94109), 75772 states have internal predecessors, (94109), 33720 states have call successors, (33720), 12060 states have call predecessors, (33720), 11692 states have return successors, (34854), 31928 states have call predecessors, (34854), 33720 states have call successors, (34854) [2021-11-23 03:54:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118861 states to 118861 states and 162683 transitions. [2021-11-23 03:54:13,303 INFO L78 Accepts]: Start accepts. Automaton has 118861 states and 162683 transitions. Word has length 316 [2021-11-23 03:54:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:13,304 INFO L470 AbstractCegarLoop]: Abstraction has 118861 states and 162683 transitions. [2021-11-23 03:54:13,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:54:13,305 INFO L276 IsEmpty]: Start isEmpty. Operand 118861 states and 162683 transitions. [2021-11-23 03:54:13,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-23 03:54:13,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:13,342 INFO L514 BasicCegarLoop]: trace histogram [24, 15, 15, 15, 15, 15, 15, 6, 6, 5, 5, 5, 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] [2021-11-23 03:54:13,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:54:13,343 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:54:13,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2112988820, now seen corresponding path program 1 times [2021-11-23 03:54:13,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:13,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23725057] [2021-11-23 03:54:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:13,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1273 trivial. 0 not checked. [2021-11-23 03:54:13,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:13,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23725057] [2021-11-23 03:54:13,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23725057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:13,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:13,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:54:13,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084190359] [2021-11-23 03:54:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:13,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:54:13,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:54:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:54:13,598 INFO L87 Difference]: Start difference. First operand 118861 states and 162683 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42)