./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/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_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:16:16,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:16:16,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:16:16,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:16:16,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:16:16,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:16:16,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:16:16,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:16:16,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:16:16,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:16:16,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:16:16,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:16:16,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:16:16,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:16:16,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:16:16,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:16:16,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:16:16,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:16:16,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:16:16,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:16:16,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:16:16,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:16:16,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:16:16,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:16:16,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:16:16,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:16:16,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:16:16,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:16:16,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:16:16,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:16:16,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:16:16,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:16:16,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:16:16,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:16:16,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:16:16,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:16:16,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:16:16,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:16:16,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:16:16,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:16:16,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:16:16,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:16:16,272 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:16:16,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:16:16,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:16:16,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:16:16,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:16:16,275 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:16:16,275 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:16:16,276 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:16:16,276 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:16:16,277 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:16:16,277 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:16:16,277 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:16:16,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:16:16,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:16:16,278 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:16:16,278 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:16:16,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:16:16,279 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:16:16,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:16:16,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:16:16,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:16:16,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:16:16,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:16:16,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:16:16,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:16:16,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:16:16,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:16:16,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:16:16,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:16:16,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:16:16,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:16:16,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:16:16,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:16:16,284 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:16:16,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:16:16,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:16:16,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:16:16,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:16:16,285 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_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b087d00fa9bd90976fef9b627e09b5ad5b9a94f81c1bccd132a9fa7492421f28 [2021-11-21 00:16:16,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:16:16,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:16:16,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:16:16,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:16:16,584 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:16:16,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-21 00:16:16,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/data/6975a0b32/3b4aea2393fd4de2b00c5b331a80af44/FLAGe96f93388 [2021-11-21 00:16:17,661 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:16:17,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-21 00:16:17,723 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/data/6975a0b32/3b4aea2393fd4de2b00c5b331a80af44/FLAGe96f93388 [2021-11-21 00:16:17,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/data/6975a0b32/3b4aea2393fd4de2b00c5b331a80af44 [2021-11-21 00:16:17,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:16:17,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:16:17,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:16:17,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:16:18,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:16:18,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:16:17" (1/1) ... [2021-11-21 00:16:18,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c653484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:18, skipping insertion in model container [2021-11-21 00:16:18,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:16:17" (1/1) ... [2021-11-21 00:16:18,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:16:18,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:16:21,468 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_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/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] [2021-11-21 00:16:21,473 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_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/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] [2021-11-21 00:16:21,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:16:21,550 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:16:21,909 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_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/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] [2021-11-21 00:16:21,950 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_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/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] [2021-11-21 00:16:21,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:16:22,119 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:16:22,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22 WrapperNode [2021-11-21 00:16:22,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:16:22,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:16:22,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:16:22,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:16:22,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,438 INFO L137 Inliner]: procedures = 421, calls = 1839, calls flagged for inlining = 205, calls inlined = 179, statements flattened = 4228 [2021-11-21 00:16:22,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:16:22,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:16:22,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:16:22,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:16:22,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:16:22,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:16:22,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:16:22,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:16:22,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (1/1) ... [2021-11-21 00:16:22,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:16:22,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:16:22,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:16:22,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09e5ff00-38f9-4bb6-9d1c-63103fe4709c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:16:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure build_crc [2021-11-21 00:16:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure build_crc [2021-11-21 00:16:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_set_multicast_list [2021-11-21 00:16:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_set_multicast_list [2021-11-21 00:16:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:16:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:16:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-21 00:16:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-21 00:16:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:16:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:16:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_lock_irqsave [2021-11-21 00:16:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_lock_irqsave [2021-11-21 00:16:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 00:16:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 00:16:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:16:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:16:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure free_orinocodev [2021-11-21 00:16:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure free_orinocodev [2021-11-21 00:16:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:16:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:16:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:16:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:16:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:16:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:16:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_8051_cpucs [2021-11-21 00:16:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_8051_cpucs [2021-11-21 00:16:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:16:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:16:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:16:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_unlock [2021-11-21 00:16:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_unlock [2021-11-21 00:16:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_open [2021-11-21 00:16:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_open [2021-11-21 00:16:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:16:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:16:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-21 00:16:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-21 00:16:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_unlock_irqrestore [2021-11-21 00:16:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_unlock_irqrestore [2021-11-21 00:16:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:16:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_disconnect [2021-11-21 00:16:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_disconnect [2021-11-21 00:16:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:16:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:16:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:16:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:16:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:16:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:16:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 00:16:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 00:16:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:16:22,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:16:22,793 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_init [2021-11-21 00:16:22,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_init [2021-11-21 00:16:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:16:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:16:22,794 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-21 00:16:22,794 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-21 00:16:22,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:16:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:16:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_hard_reset [2021-11-21 00:16:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_hard_reset [2021-11-21 00:16:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-21 00:16:22,796 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-21 00:16:22,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:16:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-21 00:16:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-21 00:16:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:16:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:16:22,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:16:22,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:16:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:16:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:16:22,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:16:22,798 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-21 00:16:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-21 00:16:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:16:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:16:22,799 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_request_context_put [2021-11-21 00:16:22,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_request_context_put [2021-11-21 00:16:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 00:16:22,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 00:16:22,800 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-21 00:16:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-21 00:16:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_submit_in_urb [2021-11-21 00:16:22,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_submit_in_urb [2021-11-21 00:16:22,801 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:16:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:16:22,802 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:16:22,802 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:16:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_lock_irq [2021-11-21 00:16:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_lock_irq [2021-11-21 00:16:22,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:16:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:16:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure ndev_priv [2021-11-21 00:16:22,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ndev_priv [2021-11-21 00:16:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-21 00:16:22,804 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-21 00:16:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:16:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:16:22,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:16:22,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:16:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-21 00:16:22,805 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-21 00:16:22,805 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_unlock_irq [2021-11-21 00:16:22,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_unlock_irq [2021-11-21 00:16:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:16:22,806 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:16:22,807 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:16:22,807 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-21 00:16:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-21 00:16:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:16:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-21 00:16:22,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-21 00:16:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_121 [2021-11-21 00:16:22,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_121 [2021-11-21 00:16:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:16:22,813 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_tx_timeout [2021-11-21 00:16:22,813 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_tx_timeout [2021-11-21 00:16:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_program_end [2021-11-21 00:16:22,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_program_end [2021-11-21 00:16:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-21 00:16:22,819 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-21 00:16:22,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:16:22,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:16:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:16:22,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:16:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_orinoco_driver_exit_10_2 [2021-11-21 00:16:22,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_orinoco_driver_exit_10_2 [2021-11-21 00:16:22,820 INFO L130 BoogieDeclarations]: Found specification of procedure orinoco_stop [2021-11-21 00:16:22,820 INFO L138 BoogieDeclarations]: Found implementation of procedure orinoco_stop [2021-11-21 00:16:22,821 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_access_ltv [2021-11-21 00:16:22,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_access_ltv [2021-11-21 00:16:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-21 00:16:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-21 00:16:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_write_ltv [2021-11-21 00:16:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_write_ltv [2021-11-21 00:16:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_mod_timer [2021-11-21 00:16:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_mod_timer [2021-11-21 00:16:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:16:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:16:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 00:16:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 00:16:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:16:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:16:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_req_queue_run [2021-11-21 00:16:22,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_req_queue_run [2021-11-21 00:16:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:16:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:16:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_122 [2021-11-21 00:16:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_122 [2021-11-21 00:16:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_ctx_complete [2021-11-21 00:16:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_ctx_complete [2021-11-21 00:16:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_delete [2021-11-21 00:16:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_delete [2021-11-21 00:16:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:16:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_alloc_ctx [2021-11-21 00:16:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_alloc_ctx [2021-11-21 00:16:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:16:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:16:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 00:16:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 00:16:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_reply_inc [2021-11-21 00:16:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_reply_inc [2021-11-21 00:16:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_req_lock_of_ezusb_priv [2021-11-21 00:16:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_req_lock_of_ezusb_priv [2021-11-21 00:16:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_docmd_wait [2021-11-21 00:16:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_docmd_wait [2021-11-21 00:16:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:16:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:16:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2021-11-21 00:16:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2021-11-21 00:16:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:16:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 00:16:22,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-21 00:16:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_complete_all [2021-11-21 00:16:22,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_complete_all [2021-11-21 00:16:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:16:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:16:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-21 00:16:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-21 00:16:23,627 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:16:23,631 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:16:24,028 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:16:26,675 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:16:26,806 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:16:27,739 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:16:27,740 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:16:27,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:16:27 BoogieIcfgContainer [2021-11-21 00:16:27,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:16:27,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:16:27,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:16:27,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:16:27,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:16:17" (1/3) ... [2021-11-21 00:16:27,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e5b23b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:16:27, skipping insertion in model container [2021-11-21 00:16:27,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:16:22" (2/3) ... [2021-11-21 00:16:27,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e5b23b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:16:27, skipping insertion in model container [2021-11-21 00:16:27,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:16:27" (3/3) ... [2021-11-21 00:16:27,758 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-orinoco-orinoco_usb.cil.i [2021-11-21 00:16:27,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:16:27,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:16:27,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:16:27,862 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:16:27,863 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:16:27,933 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) [2021-11-21 00:16:27,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-21 00:16:27,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:27,968 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] [2021-11-21 00:16:27,968 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1855026837, now seen corresponding path program 1 times [2021-11-21 00:16:27,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:27,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110491606] [2021-11-21 00:16:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:27,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-21 00:16:28,853 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:28,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110491606] [2021-11-21 00:16:28,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110491606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:28,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:28,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:28,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089993819] [2021-11-21 00:16:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:28,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:28,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:28,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:28,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:28,902 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) [2021-11-21 00:16:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:31,003 INFO L93 Difference]: Finished difference Result 3021 states and 4455 transitions. [2021-11-21 00:16:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:16:31,006 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 [2021-11-21 00:16:31,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:31,047 INFO L225 Difference]: With dead ends: 3021 [2021-11-21 00:16:31,048 INFO L226 Difference]: Without dead ends: 1900 [2021-11-21 00:16:31,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:31,069 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 [2021-11-21 00:16:31,071 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] [2021-11-21 00:16:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-11-21 00:16:31,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1896. [2021-11-21 00:16:31,391 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) [2021-11-21 00:16:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2704 transitions. [2021-11-21 00:16:31,419 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2704 transitions. Word has length 179 [2021-11-21 00:16:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:31,422 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 2704 transitions. [2021-11-21 00:16:31,422 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) [2021-11-21 00:16:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2704 transitions. [2021-11-21 00:16:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-21 00:16:31,429 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:31,430 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] [2021-11-21 00:16:31,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:16:31,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:31,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1544071272, now seen corresponding path program 1 times [2021-11-21 00:16:31,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732547783] [2021-11-21 00:16:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:31,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-21 00:16:31,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:31,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732547783] [2021-11-21 00:16:31,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732547783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:31,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:31,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:31,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542943671] [2021-11-21 00:16:31,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:31,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:31,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:31,862 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) [2021-11-21 00:16:33,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:33,712 INFO L93 Difference]: Finished difference Result 5065 states and 7211 transitions. [2021-11-21 00:16:33,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:16:33,713 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 [2021-11-21 00:16:33,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:33,757 INFO L225 Difference]: With dead ends: 5065 [2021-11-21 00:16:33,757 INFO L226 Difference]: Without dead ends: 3200 [2021-11-21 00:16:33,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:33,780 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1075 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:33,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 2959 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-21 00:16:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2021-11-21 00:16:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 3194. [2021-11-21 00:16:34,094 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) [2021-11-21 00:16:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4526 transitions. [2021-11-21 00:16:34,137 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4526 transitions. Word has length 186 [2021-11-21 00:16:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:34,140 INFO L470 AbstractCegarLoop]: Abstraction has 3194 states and 4526 transitions. [2021-11-21 00:16:34,140 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) [2021-11-21 00:16:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4526 transitions. [2021-11-21 00:16:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-21 00:16:34,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:34,155 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] [2021-11-21 00:16:34,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:16:34,156 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash 65689459, now seen corresponding path program 1 times [2021-11-21 00:16:34,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:34,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227649669] [2021-11-21 00:16:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:34,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-21 00:16:34,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:34,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227649669] [2021-11-21 00:16:34,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227649669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:34,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:34,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:34,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634081950] [2021-11-21 00:16:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:34,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:34,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:34,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:34,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:34,489 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) [2021-11-21 00:16:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:36,137 INFO L93 Difference]: Finished difference Result 7702 states and 10868 transitions. [2021-11-21 00:16:36,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:16:36,138 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 [2021-11-21 00:16:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:36,271 INFO L225 Difference]: With dead ends: 7702 [2021-11-21 00:16:36,271 INFO L226 Difference]: Without dead ends: 4539 [2021-11-21 00:16:36,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:36,291 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 1168 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:36,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2754 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:16:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2021-11-21 00:16:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4537. [2021-11-21 00:16:36,596 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) [2021-11-21 00:16:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6375 transitions. [2021-11-21 00:16:36,637 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6375 transitions. Word has length 196 [2021-11-21 00:16:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:36,638 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6375 transitions. [2021-11-21 00:16:36,638 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) [2021-11-21 00:16:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6375 transitions. [2021-11-21 00:16:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-21 00:16:36,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:36,645 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] [2021-11-21 00:16:36,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:16:36,646 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1265916073, now seen corresponding path program 1 times [2021-11-21 00:16:36,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:36,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563680195] [2021-11-21 00:16:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:36,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2021-11-21 00:16:36,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:36,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563680195] [2021-11-21 00:16:36,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563680195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:36,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:36,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:36,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273375903] [2021-11-21 00:16:36,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:36,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:36,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:36,898 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) [2021-11-21 00:16:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:38,655 INFO L93 Difference]: Finished difference Result 9531 states and 13376 transitions. [2021-11-21 00:16:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:16:38,656 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 [2021-11-21 00:16:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:38,710 INFO L225 Difference]: With dead ends: 9531 [2021-11-21 00:16:38,711 INFO L226 Difference]: Without dead ends: 5025 [2021-11-21 00:16:38,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:38,744 INFO L933 BasicCegarLoop]: 1942 mSDtfsCounter, 1070 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:38,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3205 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 00:16:38,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5025 states. [2021-11-21 00:16:39,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5025 to 5021. [2021-11-21 00:16:39,032 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) [2021-11-21 00:16:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5021 states to 5021 states and 7038 transitions. [2021-11-21 00:16:39,075 INFO L78 Accepts]: Start accepts. Automaton has 5021 states and 7038 transitions. Word has length 204 [2021-11-21 00:16:39,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:39,076 INFO L470 AbstractCegarLoop]: Abstraction has 5021 states and 7038 transitions. [2021-11-21 00:16:39,077 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) [2021-11-21 00:16:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5021 states and 7038 transitions. [2021-11-21 00:16:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-21 00:16:39,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:39,085 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] [2021-11-21 00:16:39,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:16:39,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 465227741, now seen corresponding path program 1 times [2021-11-21 00:16:39,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:39,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711623917] [2021-11-21 00:16:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:39,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 878 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2021-11-21 00:16:39,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711623917] [2021-11-21 00:16:39,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711623917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:39,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:39,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:39,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051712180] [2021-11-21 00:16:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:39,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:39,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:39,355 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) [2021-11-21 00:16:40,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:40,876 INFO L93 Difference]: Finished difference Result 12687 states and 17795 transitions. [2021-11-21 00:16:40,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:16:40,877 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 [2021-11-21 00:16:40,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:40,953 INFO L225 Difference]: With dead ends: 12687 [2021-11-21 00:16:40,954 INFO L226 Difference]: Without dead ends: 7697 [2021-11-21 00:16:40,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:40,983 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1283 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:40,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2809 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 00:16:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7697 states. [2021-11-21 00:16:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7697 to 7683. [2021-11-21 00:16:41,384 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) [2021-11-21 00:16:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 10755 transitions. [2021-11-21 00:16:41,439 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 10755 transitions. Word has length 239 [2021-11-21 00:16:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:41,440 INFO L470 AbstractCegarLoop]: Abstraction has 7683 states and 10755 transitions. [2021-11-21 00:16:41,441 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) [2021-11-21 00:16:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 10755 transitions. [2021-11-21 00:16:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-21 00:16:41,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:41,448 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] [2021-11-21 00:16:41,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:16:41,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash 694550174, now seen corresponding path program 1 times [2021-11-21 00:16:41,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:41,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89785102] [2021-11-21 00:16:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:41,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2021-11-21 00:16:41,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:41,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89785102] [2021-11-21 00:16:41,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89785102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:41,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:41,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:41,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146567857] [2021-11-21 00:16:41,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:41,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:41,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:41,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:41,773 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) [2021-11-21 00:16:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:43,825 INFO L93 Difference]: Finished difference Result 18123 states and 25340 transitions. [2021-11-21 00:16:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:16:43,826 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 [2021-11-21 00:16:43,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:43,921 INFO L225 Difference]: With dead ends: 18123 [2021-11-21 00:16:43,921 INFO L226 Difference]: Without dead ends: 10515 [2021-11-21 00:16:43,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:43,968 INFO L933 BasicCegarLoop]: 2264 mSDtfsCounter, 1190 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:43,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 3482 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-21 00:16:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2021-11-21 00:16:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 10501. [2021-11-21 00:16:44,584 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) [2021-11-21 00:16:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 14644 transitions. [2021-11-21 00:16:44,653 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 14644 transitions. Word has length 240 [2021-11-21 00:16:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:44,654 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 14644 transitions. [2021-11-21 00:16:44,655 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) [2021-11-21 00:16:44,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 14644 transitions. [2021-11-21 00:16:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-21 00:16:44,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:44,666 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] [2021-11-21 00:16:44,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:16:44,667 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:44,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:44,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2139934352, now seen corresponding path program 1 times [2021-11-21 00:16:44,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:44,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035905855] [2021-11-21 00:16:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:44,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2021-11-21 00:16:44,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:44,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035905855] [2021-11-21 00:16:44,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035905855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:44,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:44,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:16:44,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909884803] [2021-11-21 00:16:44,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:44,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:16:44,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:16:44,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:44,914 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) [2021-11-21 00:16:47,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:47,311 INFO L93 Difference]: Finished difference Result 24989 states and 34821 transitions. [2021-11-21 00:16:47,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:16:47,312 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 [2021-11-21 00:16:47,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:47,422 INFO L225 Difference]: With dead ends: 24989 [2021-11-21 00:16:47,423 INFO L226 Difference]: Without dead ends: 14563 [2021-11-21 00:16:47,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:16:47,473 INFO L933 BasicCegarLoop]: 2155 mSDtfsCounter, 1338 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:47,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 3274 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-21 00:16:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14563 states. [2021-11-21 00:16:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14563 to 14549. [2021-11-21 00:16:48,217 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) [2021-11-21 00:16:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14549 states to 14549 states and 20194 transitions. [2021-11-21 00:16:48,304 INFO L78 Accepts]: Start accepts. Automaton has 14549 states and 20194 transitions. Word has length 253 [2021-11-21 00:16:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:48,305 INFO L470 AbstractCegarLoop]: Abstraction has 14549 states and 20194 transitions. [2021-11-21 00:16:48,305 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) [2021-11-21 00:16:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 14549 states and 20194 transitions. [2021-11-21 00:16:48,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-21 00:16:48,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:48,316 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] [2021-11-21 00:16:48,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:16:48,316 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash 598747403, now seen corresponding path program 1 times [2021-11-21 00:16:48,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:48,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635472100] [2021-11-21 00:16:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:48,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2021-11-21 00:16:48,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:48,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635472100] [2021-11-21 00:16:48,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635472100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:48,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:48,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:16:48,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757121387] [2021-11-21 00:16:48,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:48,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:16:48,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:48,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:16:48,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:16:48,549 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) [2021-11-21 00:16:52,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:52,078 INFO L93 Difference]: Finished difference Result 33217 states and 46026 transitions. [2021-11-21 00:16:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:16:52,079 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 [2021-11-21 00:16:52,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:52,202 INFO L225 Difference]: With dead ends: 33217 [2021-11-21 00:16:52,202 INFO L226 Difference]: Without dead ends: 18743 [2021-11-21 00:16:52,267 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 [2021-11-21 00:16:52,268 INFO L933 BasicCegarLoop]: 2264 mSDtfsCounter, 1279 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:52,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3944 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-21 00:16:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18743 states. [2021-11-21 00:16:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18743 to 18725. [2021-11-21 00:16:53,254 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) [2021-11-21 00:16:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18725 states to 18725 states and 25871 transitions. [2021-11-21 00:16:53,366 INFO L78 Accepts]: Start accepts. Automaton has 18725 states and 25871 transitions. Word has length 256 [2021-11-21 00:16:53,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:53,368 INFO L470 AbstractCegarLoop]: Abstraction has 18725 states and 25871 transitions. [2021-11-21 00:16:53,369 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) [2021-11-21 00:16:53,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18725 states and 25871 transitions. [2021-11-21 00:16:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-21 00:16:53,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:53,386 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] [2021-11-21 00:16:53,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:16:53,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:53,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1445339356, now seen corresponding path program 1 times [2021-11-21 00:16:53,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:53,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611214346] [2021-11-21 00:16:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:53,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-21 00:16:53,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:53,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611214346] [2021-11-21 00:16:53,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611214346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:53,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:53,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:16:53,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473299859] [2021-11-21 00:16:53,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:53,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:16:53,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:16:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:16:53,642 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) [2021-11-21 00:16:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:56,908 INFO L93 Difference]: Finished difference Result 47209 states and 66296 transitions. [2021-11-21 00:16:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:16:56,908 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 [2021-11-21 00:16:56,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:57,100 INFO L225 Difference]: With dead ends: 47209 [2021-11-21 00:16:57,101 INFO L226 Difference]: Without dead ends: 28559 [2021-11-21 00:16:57,186 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 [2021-11-21 00:16:57,189 INFO L933 BasicCegarLoop]: 2437 mSDtfsCounter, 1790 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:57,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 6175 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 00:16:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28559 states. [2021-11-21 00:16:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28559 to 22781. [2021-11-21 00:16:58,799 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) [2021-11-21 00:16:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22781 states to 22781 states and 31424 transitions. [2021-11-21 00:16:58,965 INFO L78 Accepts]: Start accepts. Automaton has 22781 states and 31424 transitions. Word has length 293 [2021-11-21 00:16:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:58,966 INFO L470 AbstractCegarLoop]: Abstraction has 22781 states and 31424 transitions. [2021-11-21 00:16:58,967 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) [2021-11-21 00:16:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 22781 states and 31424 transitions. [2021-11-21 00:16:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-21 00:16:58,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:58,989 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] [2021-11-21 00:16:58,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:16:58,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2011700145, now seen corresponding path program 1 times [2021-11-21 00:16:58,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:58,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868313245] [2021-11-21 00:16:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:58,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-21 00:16:59,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:59,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868313245] [2021-11-21 00:16:59,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868313245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:59,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:59,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:16:59,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306811428] [2021-11-21 00:16:59,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:59,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:16:59,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:16:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:16:59,413 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) [2021-11-21 00:17:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:03,573 INFO L93 Difference]: Finished difference Result 55361 states and 77476 transitions. [2021-11-21 00:17:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:17:03,573 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 [2021-11-21 00:17:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:03,813 INFO L225 Difference]: With dead ends: 55361 [2021-11-21 00:17:03,813 INFO L226 Difference]: Without dead ends: 32655 [2021-11-21 00:17:03,907 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 [2021-11-21 00:17:03,908 INFO L933 BasicCegarLoop]: 2423 mSDtfsCounter, 1818 mSDsluCounter, 4355 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:03,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 6131 Invalid, 1521 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [191 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-21 00:17:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32655 states. [2021-11-21 00:17:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32655 to 26877. [2021-11-21 00:17:05,753 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) [2021-11-21 00:17:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26877 states to 26877 states and 37019 transitions. [2021-11-21 00:17:05,962 INFO L78 Accepts]: Start accepts. Automaton has 26877 states and 37019 transitions. Word has length 294 [2021-11-21 00:17:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:05,963 INFO L470 AbstractCegarLoop]: Abstraction has 26877 states and 37019 transitions. [2021-11-21 00:17:05,964 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) [2021-11-21 00:17:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand 26877 states and 37019 transitions. [2021-11-21 00:17:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-11-21 00:17:05,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:05,992 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] [2021-11-21 00:17:05,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:17:05,993 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 644161652, now seen corresponding path program 1 times [2021-11-21 00:17:05,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:05,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251893109] [2021-11-21 00:17:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:05,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2021-11-21 00:17:06,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:06,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251893109] [2021-11-21 00:17:06,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251893109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:06,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:06,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:17:06,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772323811] [2021-11-21 00:17:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:06,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:06,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:06,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:06,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:06,310 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) [2021-11-21 00:17:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:09,878 INFO L93 Difference]: Finished difference Result 63920 states and 88030 transitions. [2021-11-21 00:17:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:09,879 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 [2021-11-21 00:17:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:10,108 INFO L225 Difference]: With dead ends: 63920 [2021-11-21 00:17:10,109 INFO L226 Difference]: Without dead ends: 37118 [2021-11-21 00:17:10,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:10,226 INFO L933 BasicCegarLoop]: 2352 mSDtfsCounter, 1283 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:10,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 3595 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-21 00:17:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37118 states. [2021-11-21 00:17:12,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37118 to 37068. [2021-11-21 00:17:12,109 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) [2021-11-21 00:17:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37068 states to 37068 states and 50962 transitions. [2021-11-21 00:17:12,322 INFO L78 Accepts]: Start accepts. Automaton has 37068 states and 50962 transitions. Word has length 299 [2021-11-21 00:17:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:12,323 INFO L470 AbstractCegarLoop]: Abstraction has 37068 states and 50962 transitions. [2021-11-21 00:17:12,324 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) [2021-11-21 00:17:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 37068 states and 50962 transitions. [2021-11-21 00:17:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-21 00:17:12,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:12,348 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] [2021-11-21 00:17:12,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:17:12,349 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -254115647, now seen corresponding path program 1 times [2021-11-21 00:17:12,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:12,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918332718] [2021-11-21 00:17:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:12,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1257 trivial. 0 not checked. [2021-11-21 00:17:12,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:12,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918332718] [2021-11-21 00:17:12,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918332718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:12,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:12,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:17:12,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880679503] [2021-11-21 00:17:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:12,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:17:12,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:17:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:12,664 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) [2021-11-21 00:17:16,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:16,712 INFO L93 Difference]: Finished difference Result 108696 states and 149472 transitions. [2021-11-21 00:17:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:17:16,712 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 [2021-11-21 00:17:16,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:17,141 INFO L225 Difference]: With dead ends: 108696 [2021-11-21 00:17:17,142 INFO L226 Difference]: Without dead ends: 71703 [2021-11-21 00:17:17,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:17:17,296 INFO L933 BasicCegarLoop]: 2148 mSDtfsCounter, 1409 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:17,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 3395 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:17:17,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71703 states. [2021-11-21 00:17:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71703 to 71701. [2021-11-21 00:17:20,350 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) [2021-11-21 00:17:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71701 states to 71701 states and 98245 transitions. [2021-11-21 00:17:20,759 INFO L78 Accepts]: Start accepts. Automaton has 71701 states and 98245 transitions. Word has length 295 [2021-11-21 00:17:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:20,760 INFO L470 AbstractCegarLoop]: Abstraction has 71701 states and 98245 transitions. [2021-11-21 00:17:20,761 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) [2021-11-21 00:17:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 71701 states and 98245 transitions. [2021-11-21 00:17:20,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2021-11-21 00:17:20,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:20,788 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] [2021-11-21 00:17:20,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:17:20,788 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:20,789 INFO L85 PathProgramCache]: Analyzing trace with hash 866157736, now seen corresponding path program 1 times [2021-11-21 00:17:20,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:20,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639151032] [2021-11-21 00:17:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:20,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-21 00:17:21,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:21,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639151032] [2021-11-21 00:17:21,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639151032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:21,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:21,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:17:21,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549146163] [2021-11-21 00:17:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:21,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:17:21,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:17:21,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:17:21,662 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) [2021-11-21 00:17:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:31,024 INFO L93 Difference]: Finished difference Result 119519 states and 164204 transitions. [2021-11-21 00:17:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:17:31,025 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 [2021-11-21 00:17:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:31,820 INFO L225 Difference]: With dead ends: 119519 [2021-11-21 00:17:31,820 INFO L226 Difference]: Without dead ends: 119517 [2021-11-21 00:17:31,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:17:31,898 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1047 mSDsluCounter, 6302 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 6888 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:31,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 6888 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 00:17:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119517 states. [2021-11-21 00:17:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119517 to 118861. [2021-11-21 00:17:38,546 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) [2021-11-21 00:17:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118861 states to 118861 states and 162683 transitions. [2021-11-21 00:17:39,480 INFO L78 Accepts]: Start accepts. Automaton has 118861 states and 162683 transitions. Word has length 316 [2021-11-21 00:17:39,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:39,482 INFO L470 AbstractCegarLoop]: Abstraction has 118861 states and 162683 transitions. [2021-11-21 00:17:39,483 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) [2021-11-21 00:17:39,483 INFO L276 IsEmpty]: Start isEmpty. Operand 118861 states and 162683 transitions. [2021-11-21 00:17:39,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-21 00:17:39,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:39,533 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] [2021-11-21 00:17:39,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:17:39,534 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2112988820, now seen corresponding path program 1 times [2021-11-21 00:17:39,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:39,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756084145] [2021-11-21 00:17:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:39,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1273 trivial. 0 not checked. [2021-11-21 00:17:39,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:39,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756084145] [2021-11-21 00:17:39,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756084145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:39,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:39,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:17:39,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600651999] [2021-11-21 00:17:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:39,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:17:39,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:17:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:17:39,814 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)