./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS --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 ed68d02e3340e974ceb85a32805324d7a9365cc739c1b33e4c9dbafc7a73800a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:29:35,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:29:35,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:29:35,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:29:35,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:29:35,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:29:35,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:29:35,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:29:35,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:29:35,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:29:35,144 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:29:35,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:29:35,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:29:35,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:29:35,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:29:35,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:29:35,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:29:35,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:29:35,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:29:35,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:29:35,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:29:35,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:29:35,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:29:35,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:29:35,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:29:35,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:29:35,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:29:35,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:29:35,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:29:35,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:29:35,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:29:35,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:29:35,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:29:35,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:29:35,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:29:35,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:29:35,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:29:35,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:29:35,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:29:35,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:29:35,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:29:35,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:29:35,236 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:29:35,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:29:35,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:29:35,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:29:35,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:29:35,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:29:35,244 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:29:35,245 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:29:35,245 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:29:35,245 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:29:35,246 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:29:35,246 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:29:35,247 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:29:35,247 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:29:35,247 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:29:35,247 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:29:35,247 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:29:35,248 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:29:35,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:29:35,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:29:35,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:29:35,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:29:35,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:29:35,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:29:35,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:29:35,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:29:35,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:29:35,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:29:35,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:29:35,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:29:35,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:29:35,251 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:29:35,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:29:35,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:29:35,252 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:29:35,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:29:35,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:29:35,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:29:35,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed68d02e3340e974ceb85a32805324d7a9365cc739c1b33e4c9dbafc7a73800a [2022-11-19 07:29:35,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:29:35,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:29:35,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:29:35,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:29:35,598 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:29:35,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2022-11-19 07:29:35,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/data/e49c60d7a/0a56836b2f0f427db15cc76cb980e4c3/FLAG1517e979b [2022-11-19 07:29:36,678 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:29:36,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2022-11-19 07:29:36,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/data/e49c60d7a/0a56836b2f0f427db15cc76cb980e4c3/FLAG1517e979b [2022-11-19 07:29:37,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/data/e49c60d7a/0a56836b2f0f427db15cc76cb980e4c3 [2022-11-19 07:29:37,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:29:37,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:29:37,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:29:37,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:29:37,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:29:37,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:29:37" (1/1) ... [2022-11-19 07:29:37,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22107d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:37, skipping insertion in model container [2022-11-19 07:29:37,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:29:37" (1/1) ... [2022-11-19 07:29:37,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:29:37,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:29:41,429 WARN L234 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_3d348e81-20bf-4885-a1b6-f0dac975346c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i[491185,491198] [2022-11-19 07:29:41,435 WARN L234 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_3d348e81-20bf-4885-a1b6-f0dac975346c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i[491330,491343] [2022-11-19 07:29:41,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:29:41,539 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:29:42,071 WARN L234 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_3d348e81-20bf-4885-a1b6-f0dac975346c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i[491185,491198] [2022-11-19 07:29:42,072 WARN L234 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_3d348e81-20bf-4885-a1b6-f0dac975346c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i[491330,491343] [2022-11-19 07:29:42,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:29:42,342 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:29:42,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42 WrapperNode [2022-11-19 07:29:42,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:29:42,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:29:42,344 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:29:42,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:29:42,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:42,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:42,788 INFO L138 Inliner]: procedures = 473, calls = 4777, calls flagged for inlining = 228, calls inlined = 198, statements flattened = 9093 [2022-11-19 07:29:42,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:29:42,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:29:42,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:29:42,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:29:42,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:42,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:42,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:42,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:43,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:43,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:43,223 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:43,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:43,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:29:43,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:29:43,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:29:43,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:29:43,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (1/1) ... [2022-11-19 07:29:43,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:29:43,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:43,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:29:43,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d348e81-20bf-4885-a1b6-f0dac975346c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:29:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2022-11-19 07:29:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2022-11-19 07:29:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-19 07:29:43,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-19 07:29:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2022-11-19 07:29:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2022-11-19 07:29:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2022-11-19 07:29:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2022-11-19 07:29:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:29:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:29:43,419 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2022-11-19 07:29:43,419 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2022-11-19 07:29:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2022-11-19 07:29:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2022-11-19 07:29:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:29:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:29:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2022-11-19 07:29:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2022-11-19 07:29:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2022-11-19 07:29:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2022-11-19 07:29:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2022-11-19 07:29:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2022-11-19 07:29:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2022-11-19 07:29:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2022-11-19 07:29:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2022-11-19 07:29:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2022-11-19 07:29:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2022-11-19 07:29:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2022-11-19 07:29:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2022-11-19 07:29:43,423 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2022-11-19 07:29:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:29:43,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:29:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-19 07:29:43,423 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-19 07:29:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:29:43,424 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:29:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:29:43,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:29:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:29:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2022-11-19 07:29:43,425 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2022-11-19 07:29:43,425 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2022-11-19 07:29:43,425 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2022-11-19 07:29:43,426 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2022-11-19 07:29:43,426 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2022-11-19 07:29:43,427 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-19 07:29:43,427 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-19 07:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:29:43,428 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2022-11-19 07:29:43,428 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2022-11-19 07:29:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2022-11-19 07:29:43,429 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2022-11-19 07:29:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2022-11-19 07:29:43,429 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2022-11-19 07:29:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-19 07:29:43,429 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-19 07:29:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:29:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2022-11-19 07:29:43,430 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2022-11-19 07:29:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-11-19 07:29:43,431 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-11-19 07:29:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:29:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:29:43,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:29:43,431 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-19 07:29:43,431 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-19 07:29:43,432 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2022-11-19 07:29:43,432 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2022-11-19 07:29:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:29:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-19 07:29:43,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-19 07:29:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2022-11-19 07:29:43,433 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2022-11-19 07:29:43,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:29:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:29:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:29:43,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:29:43,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:29:43,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:29:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2022-11-19 07:29:43,435 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2022-11-19 07:29:43,435 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2022-11-19 07:29:43,436 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2022-11-19 07:29:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2022-11-19 07:29:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2022-11-19 07:29:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:29:43,437 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2022-11-19 07:29:43,437 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2022-11-19 07:29:43,438 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2022-11-19 07:29:43,438 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2022-11-19 07:29:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:29:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:29:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2022-11-19 07:29:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2022-11-19 07:29:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 07:29:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 07:29:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:29:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2022-11-19 07:29:43,440 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2022-11-19 07:29:43,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:29:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:29:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2022-11-19 07:29:43,441 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2022-11-19 07:29:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:29:43,441 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2022-11-19 07:29:43,442 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2022-11-19 07:29:43,442 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2022-11-19 07:29:43,443 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2022-11-19 07:29:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:29:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 07:29:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-11-19 07:29:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-11-19 07:29:43,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-19 07:29:43,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-19 07:29:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-19 07:29:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-19 07:29:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2022-11-19 07:29:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2022-11-19 07:29:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:29:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:29:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2022-11-19 07:29:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2022-11-19 07:29:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-19 07:29:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-19 07:29:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:29:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:29:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:29:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:29:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:29:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:29:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 07:29:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 07:29:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:29:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:29:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:29:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:29:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-19 07:29:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-19 07:29:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-19 07:29:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-19 07:29:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2022-11-19 07:29:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2022-11-19 07:29:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:29:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:29:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2022-11-19 07:29:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2022-11-19 07:29:43,448 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-19 07:29:43,448 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-19 07:29:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2022-11-19 07:29:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2022-11-19 07:29:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-11-19 07:29:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-11-19 07:29:43,449 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2022-11-19 07:29:43,449 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2022-11-19 07:29:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:29:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:29:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2022-11-19 07:29:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2022-11-19 07:29:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:29:43,450 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:29:43,450 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 07:29:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 07:29:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:29:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:29:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:29:43,451 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2022-11-19 07:29:43,451 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2022-11-19 07:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2022-11-19 07:29:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2022-11-19 07:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2022-11-19 07:29:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2022-11-19 07:29:43,452 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2022-11-19 07:29:43,452 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2022-11-19 07:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 07:29:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 07:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2022-11-19 07:29:43,453 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2022-11-19 07:29:43,453 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:29:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:29:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2022-11-19 07:29:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2022-11-19 07:29:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 07:29:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 07:29:43,454 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:29:43,454 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:29:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2022-11-19 07:29:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2022-11-19 07:29:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:29:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:29:43,455 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:29:43,455 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:29:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2022-11-19 07:29:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2022-11-19 07:29:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 07:29:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 07:29:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:29:43,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:29:43,456 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2022-11-19 07:29:43,457 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2022-11-19 07:29:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-19 07:29:43,457 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-19 07:29:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2022-11-19 07:29:43,457 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2022-11-19 07:29:43,457 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:29:43,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:29:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2022-11-19 07:29:43,458 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2022-11-19 07:29:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2022-11-19 07:29:43,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2022-11-19 07:29:43,458 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2022-11-19 07:29:43,458 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2022-11-19 07:29:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:29:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2022-11-19 07:29:43,459 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2022-11-19 07:29:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:29:43,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:29:43,459 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2022-11-19 07:29:43,459 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2022-11-19 07:29:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-11-19 07:29:43,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-11-19 07:29:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 07:29:43,460 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 07:29:43,460 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2022-11-19 07:29:43,460 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2022-11-19 07:29:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:29:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:29:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 07:29:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 07:29:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2022-11-19 07:29:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2022-11-19 07:29:43,461 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2022-11-19 07:29:43,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2022-11-19 07:29:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2022-11-19 07:29:43,462 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2022-11-19 07:29:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2022-11-19 07:29:43,462 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2022-11-19 07:29:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2022-11-19 07:29:43,463 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2022-11-19 07:29:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-19 07:29:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:29:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-19 07:29:43,463 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-19 07:29:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2022-11-19 07:29:43,464 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2022-11-19 07:29:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:29:43,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:29:44,743 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:29:44,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:29:45,183 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:30:05,851 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:30:06,219 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:30:08,540 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:30:08,541 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:30:08,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:30:08 BoogieIcfgContainer [2022-11-19 07:30:08,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:30:08,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:30:08,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:30:08,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:30:08,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:29:37" (1/3) ... [2022-11-19 07:30:08,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b38ee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:30:08, skipping insertion in model container [2022-11-19 07:30:08,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:29:42" (2/3) ... [2022-11-19 07:30:08,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b38ee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:30:08, skipping insertion in model container [2022-11-19 07:30:08,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:30:08" (3/3) ... [2022-11-19 07:30:08,572 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2022-11-19 07:30:08,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:30:08,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:30:08,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:30:08,731 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7609c12a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:30:08,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:30:08,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 2040 states, 1229 states have (on average 1.3108218063466233) internal successors, (1611), 1231 states have internal predecessors, (1611), 695 states have call successors, (695), 116 states have call predecessors, (695), 115 states have return successors, (687), 687 states have call predecessors, (687), 687 states have call successors, (687) [2022-11-19 07:30:08,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-11-19 07:30:08,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:08,809 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:08,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:08,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1135736797, now seen corresponding path program 1 times [2022-11-19 07:30:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:08,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093223382] [2022-11-19 07:30:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2022-11-19 07:30:10,591 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093223382] [2022-11-19 07:30:10,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093223382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:10,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:10,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457171488] [2022-11-19 07:30:10,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:10,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:10,656 INFO L87 Difference]: Start difference. First operand has 2040 states, 1229 states have (on average 1.3108218063466233) internal successors, (1611), 1231 states have internal predecessors, (1611), 695 states have call successors, (695), 116 states have call predecessors, (695), 115 states have return successors, (687), 687 states have call predecessors, (687), 687 states have call successors, (687) 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, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:15,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:16,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:16,848 INFO L93 Difference]: Finished difference Result 5900 states and 8924 transitions. [2022-11-19 07:30:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:16,850 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, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 406 [2022-11-19 07:30:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:16,902 INFO L225 Difference]: With dead ends: 5900 [2022-11-19 07:30:16,902 INFO L226 Difference]: Without dead ends: 3870 [2022-11-19 07:30:16,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:16,932 INFO L413 NwaCegarLoop]: 3193 mSDtfsCounter, 2770 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2770 SdHoareTripleChecker+Valid, 5712 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:16,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2770 Valid, 5712 Invalid, 925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 911 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-19 07:30:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2022-11-19 07:30:17,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3866. [2022-11-19 07:30:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 2367 states have (on average 1.3067173637515843) internal successors, (3093), 2371 states have internal predecessors, (3093), 1272 states have call successors, (1272), 226 states have call predecessors, (1272), 226 states have return successors, (1272), 1270 states have call predecessors, (1272), 1272 states have call successors, (1272) [2022-11-19 07:30:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5637 transitions. [2022-11-19 07:30:17,406 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5637 transitions. Word has length 406 [2022-11-19 07:30:17,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:17,408 INFO L495 AbstractCegarLoop]: Abstraction has 3866 states and 5637 transitions. [2022-11-19 07:30:17,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:17,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5637 transitions. [2022-11-19 07:30:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-19 07:30:17,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:17,425 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:17,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:30:17,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:17,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1922409782, now seen corresponding path program 1 times [2022-11-19 07:30:17,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:17,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843163508] [2022-11-19 07:30:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2022-11-19 07:30:18,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:18,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843163508] [2022-11-19 07:30:18,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843163508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:18,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:18,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:18,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99090842] [2022-11-19 07:30:18,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:18,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:18,347 INFO L87 Difference]: Start difference. First operand 3866 states and 5637 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:22,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:24,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:24,138 INFO L93 Difference]: Finished difference Result 11346 states and 16523 transitions. [2022-11-19 07:30:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 408 [2022-11-19 07:30:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:24,196 INFO L225 Difference]: With dead ends: 11346 [2022-11-19 07:30:24,196 INFO L226 Difference]: Without dead ends: 7553 [2022-11-19 07:30:24,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:24,218 INFO L413 NwaCegarLoop]: 3150 mSDtfsCounter, 2706 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2706 SdHoareTripleChecker+Valid, 5609 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:24,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2706 Valid, 5609 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 921 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 07:30:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2022-11-19 07:30:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 7549. [2022-11-19 07:30:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7549 states, 4640 states have (on average 1.3060344827586208) internal successors, (6060), 4650 states have internal predecessors, (6060), 2456 states have call successors, (2456), 452 states have call predecessors, (2456), 452 states have return successors, (2456), 2450 states have call predecessors, (2456), 2456 states have call successors, (2456) [2022-11-19 07:30:24,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7549 states to 7549 states and 10972 transitions. [2022-11-19 07:30:24,816 INFO L78 Accepts]: Start accepts. Automaton has 7549 states and 10972 transitions. Word has length 408 [2022-11-19 07:30:24,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:24,821 INFO L495 AbstractCegarLoop]: Abstraction has 7549 states and 10972 transitions. [2022-11-19 07:30:24,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7549 states and 10972 transitions. [2022-11-19 07:30:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-19 07:30:24,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:24,833 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:24,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:30:24,834 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash 803759953, now seen corresponding path program 1 times [2022-11-19 07:30:24,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:24,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605754765] [2022-11-19 07:30:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5118 trivial. 0 not checked. [2022-11-19 07:30:25,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:25,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605754765] [2022-11-19 07:30:25,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605754765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:25,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:25,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:25,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420427005] [2022-11-19 07:30:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:25,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:25,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:25,620 INFO L87 Difference]: Start difference. First operand 7549 states and 10972 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:31,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:32,279 INFO L93 Difference]: Finished difference Result 22109 states and 32107 transitions. [2022-11-19 07:30:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:32,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 407 [2022-11-19 07:30:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:32,388 INFO L225 Difference]: With dead ends: 22109 [2022-11-19 07:30:32,388 INFO L226 Difference]: Without dead ends: 14633 [2022-11-19 07:30:32,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:32,433 INFO L413 NwaCegarLoop]: 3357 mSDtfsCounter, 2707 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:32,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2707 Valid, 5816 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 987 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 07:30:32,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14633 states. [2022-11-19 07:30:33,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14633 to 14629. [2022-11-19 07:30:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14629 states, 9020 states have (on average 1.3041019955654103) internal successors, (11763), 9042 states have internal predecessors, (11763), 4719 states have call successors, (4719), 889 states have call predecessors, (4719), 889 states have return successors, (4719), 4705 states have call predecessors, (4719), 4719 states have call successors, (4719) [2022-11-19 07:30:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14629 states to 14629 states and 21201 transitions. [2022-11-19 07:30:33,584 INFO L78 Accepts]: Start accepts. Automaton has 14629 states and 21201 transitions. Word has length 407 [2022-11-19 07:30:33,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:33,585 INFO L495 AbstractCegarLoop]: Abstraction has 14629 states and 21201 transitions. [2022-11-19 07:30:33,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 14629 states and 21201 transitions. [2022-11-19 07:30:33,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-11-19 07:30:33,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:33,602 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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] [2022-11-19 07:30:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:30:33,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:33,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1998171050, now seen corresponding path program 1 times [2022-11-19 07:30:33,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:33,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10147843] [2022-11-19 07:30:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:33,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5114 trivial. 0 not checked. [2022-11-19 07:30:34,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:34,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10147843] [2022-11-19 07:30:34,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10147843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:34,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:34,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:34,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987486451] [2022-11-19 07:30:34,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:34,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:34,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:34,414 INFO L87 Difference]: Start difference. First operand 14629 states and 21201 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:39,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:40,933 INFO L93 Difference]: Finished difference Result 37116 states and 53497 transitions. [2022-11-19 07:30:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:40,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 412 [2022-11-19 07:30:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:41,077 INFO L225 Difference]: With dead ends: 37116 [2022-11-19 07:30:41,078 INFO L226 Difference]: Without dead ends: 22560 [2022-11-19 07:30:41,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:41,156 INFO L413 NwaCegarLoop]: 2975 mSDtfsCounter, 1566 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 5404 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:41,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 5404 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 961 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 07:30:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22560 states. [2022-11-19 07:30:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22560 to 22542. [2022-11-19 07:30:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22542 states, 13988 states have (on average 1.305404632542179) internal successors, (18260), 14040 states have internal predecessors, (18260), 7028 states have call successors, (7028), 1525 states have call predecessors, (7028), 1525 states have return successors, (7028), 6984 states have call predecessors, (7028), 7028 states have call successors, (7028) [2022-11-19 07:30:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22542 states to 22542 states and 32316 transitions. [2022-11-19 07:30:42,665 INFO L78 Accepts]: Start accepts. Automaton has 22542 states and 32316 transitions. Word has length 412 [2022-11-19 07:30:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:42,667 INFO L495 AbstractCegarLoop]: Abstraction has 22542 states and 32316 transitions. [2022-11-19 07:30:42,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 07:30:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 22542 states and 32316 transitions. [2022-11-19 07:30:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-11-19 07:30:42,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:42,835 INFO L195 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:42,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:30:42,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash -147075502, now seen corresponding path program 1 times [2022-11-19 07:30:42,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:42,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250714092] [2022-11-19 07:30:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:42,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5116 trivial. 0 not checked. [2022-11-19 07:30:43,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250714092] [2022-11-19 07:30:43,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250714092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:43,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:43,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:43,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446215680] [2022-11-19 07:30:43,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:43,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:43,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:43,548 INFO L87 Difference]: Start difference. First operand 22542 states and 32316 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-19 07:30:48,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:30:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:30:51,056 INFO L93 Difference]: Finished difference Result 65225 states and 93489 transitions. [2022-11-19 07:30:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:30:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 425 [2022-11-19 07:30:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:30:51,275 INFO L225 Difference]: With dead ends: 65225 [2022-11-19 07:30:51,276 INFO L226 Difference]: Without dead ends: 42756 [2022-11-19 07:30:51,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:51,355 INFO L413 NwaCegarLoop]: 3381 mSDtfsCounter, 2655 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 5844 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:30:51,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 5844 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 969 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-19 07:30:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42756 states. [2022-11-19 07:30:53,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42756 to 42722. [2022-11-19 07:30:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42722 states, 26587 states have (on average 1.3016511829089406) internal successors, (34607), 26723 states have internal predecessors, (34607), 13233 states have call successors, (13233), 2901 states have call predecessors, (13233), 2901 states have return successors, (13233), 13113 states have call predecessors, (13233), 13233 states have call successors, (13233) [2022-11-19 07:30:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42722 states to 42722 states and 61073 transitions. [2022-11-19 07:30:54,223 INFO L78 Accepts]: Start accepts. Automaton has 42722 states and 61073 transitions. Word has length 425 [2022-11-19 07:30:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:30:54,225 INFO L495 AbstractCegarLoop]: Abstraction has 42722 states and 61073 transitions. [2022-11-19 07:30:54,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-19 07:30:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 42722 states and 61073 transitions. [2022-11-19 07:30:54,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-19 07:30:54,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:30:54,248 INFO L195 NwaCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:30:54,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:30:54,250 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:30:54,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:30:54,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1713566598, now seen corresponding path program 1 times [2022-11-19 07:30:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:30:54,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091827751] [2022-11-19 07:30:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:30:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:30:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:30:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5195 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5192 trivial. 0 not checked. [2022-11-19 07:30:55,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:30:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091827751] [2022-11-19 07:30:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091827751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:30:55,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:30:55,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:30:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399355195] [2022-11-19 07:30:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:30:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:30:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:30:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:30:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:30:55,027 INFO L87 Difference]: Start difference. First operand 42722 states and 61073 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-19 07:31:00,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:01,750 INFO L93 Difference]: Finished difference Result 86463 states and 123345 transitions. [2022-11-19 07:31:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:01,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 429 [2022-11-19 07:31:01,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:02,264 INFO L225 Difference]: With dead ends: 86463 [2022-11-19 07:31:02,264 INFO L226 Difference]: Without dead ends: 43814 [2022-11-19 07:31:02,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:02,437 INFO L413 NwaCegarLoop]: 2714 mSDtfsCounter, 888 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 5160 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:02,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 5160 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 913 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-19 07:31:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43814 states. [2022-11-19 07:31:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43814 to 43812. [2022-11-19 07:31:04,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43812 states, 27299 states have (on average 1.29916846770944) internal successors, (35466), 27437 states have internal predecessors, (35466), 13447 states have call successors, (13447), 3065 states have call predecessors, (13447), 3065 states have return successors, (13447), 13325 states have call predecessors, (13447), 13447 states have call successors, (13447) [2022-11-19 07:31:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43812 states to 43812 states and 62360 transitions. [2022-11-19 07:31:05,238 INFO L78 Accepts]: Start accepts. Automaton has 43812 states and 62360 transitions. Word has length 429 [2022-11-19 07:31:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:05,239 INFO L495 AbstractCegarLoop]: Abstraction has 43812 states and 62360 transitions. [2022-11-19 07:31:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-19 07:31:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 43812 states and 62360 transitions. [2022-11-19 07:31:05,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-19 07:31:05,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:05,248 INFO L195 NwaCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:05,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:31:05,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:05,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:05,249 INFO L85 PathProgramCache]: Analyzing trace with hash 153311669, now seen corresponding path program 1 times [2022-11-19 07:31:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:05,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712646708] [2022-11-19 07:31:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:05,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5201 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5190 trivial. 0 not checked. [2022-11-19 07:31:06,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:06,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712646708] [2022-11-19 07:31:06,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712646708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:06,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:06,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986128143] [2022-11-19 07:31:06,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:06,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:06,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:06,378 INFO L87 Difference]: Start difference. First operand 43812 states and 62360 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-19 07:31:12,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:14,712 INFO L93 Difference]: Finished difference Result 107192 states and 152540 transitions. [2022-11-19 07:31:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 447 [2022-11-19 07:31:14,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:15,070 INFO L225 Difference]: With dead ends: 107192 [2022-11-19 07:31:15,070 INFO L226 Difference]: Without dead ends: 63453 [2022-11-19 07:31:15,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:15,239 INFO L413 NwaCegarLoop]: 4495 mSDtfsCounter, 2651 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 6980 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:15,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2651 Valid, 6980 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1209 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-19 07:31:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63453 states. [2022-11-19 07:31:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63453 to 63435. [2022-11-19 07:31:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63435 states, 39538 states have (on average 1.2975871313672922) internal successors, (51304), 39742 states have internal predecessors, (51304), 19467 states have call successors, (19467), 4429 states have call predecessors, (19467), 4429 states have return successors, (19467), 19287 states have call predecessors, (19467), 19467 states have call successors, (19467) [2022-11-19 07:31:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63435 states to 63435 states and 90238 transitions. [2022-11-19 07:31:18,726 INFO L78 Accepts]: Start accepts. Automaton has 63435 states and 90238 transitions. Word has length 447 [2022-11-19 07:31:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:18,727 INFO L495 AbstractCegarLoop]: Abstraction has 63435 states and 90238 transitions. [2022-11-19 07:31:18,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-19 07:31:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 63435 states and 90238 transitions. [2022-11-19 07:31:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-19 07:31:18,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:18,750 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:18,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:31:18,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:18,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1502160881, now seen corresponding path program 1 times [2022-11-19 07:31:18,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:18,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540963679] [2022-11-19 07:31:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:18,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5464 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5457 trivial. 0 not checked. [2022-11-19 07:31:19,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:19,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540963679] [2022-11-19 07:31:19,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540963679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:19,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088746931] [2022-11-19 07:31:19,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:19,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:19,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:19,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:19,846 INFO L87 Difference]: Start difference. First operand 63435 states and 90238 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 07:31:25,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:31:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:31:29,142 INFO L93 Difference]: Finished difference Result 156101 states and 222138 transitions. [2022-11-19 07:31:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:31:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 476 [2022-11-19 07:31:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:31:29,671 INFO L225 Difference]: With dead ends: 156101 [2022-11-19 07:31:29,671 INFO L226 Difference]: Without dead ends: 92896 [2022-11-19 07:31:29,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:29,855 INFO L413 NwaCegarLoop]: 4340 mSDtfsCounter, 2718 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 6785 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:31:29,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 6785 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1193 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 07:31:29,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92896 states. [2022-11-19 07:31:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92896 to 92882. [2022-11-19 07:31:34,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92882 states, 57952 states have (on average 1.296762838210933) internal successors, (75150), 58264 states have internal predecessors, (75150), 28411 states have call successors, (28411), 6518 states have call predecessors, (28411), 6518 states have return successors, (28411), 28135 states have call predecessors, (28411), 28411 states have call successors, (28411) [2022-11-19 07:31:34,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92882 states to 92882 states and 131972 transitions. [2022-11-19 07:31:34,456 INFO L78 Accepts]: Start accepts. Automaton has 92882 states and 131972 transitions. Word has length 476 [2022-11-19 07:31:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:31:34,457 INFO L495 AbstractCegarLoop]: Abstraction has 92882 states and 131972 transitions. [2022-11-19 07:31:34,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 07:31:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 92882 states and 131972 transitions. [2022-11-19 07:31:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-19 07:31:34,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:31:34,477 INFO L195 NwaCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:31:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:31:34,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:31:34,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:31:34,478 INFO L85 PathProgramCache]: Analyzing trace with hash -391511604, now seen corresponding path program 1 times [2022-11-19 07:31:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:31:34,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912895436] [2022-11-19 07:31:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:31:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:31:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:31:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5464 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5457 trivial. 0 not checked. [2022-11-19 07:31:35,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:31:35,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912895436] [2022-11-19 07:31:35,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912895436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:31:35,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:31:35,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:31:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789220228] [2022-11-19 07:31:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:31:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:31:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:31:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:31:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:31:35,159 INFO L87 Difference]: Start difference. First operand 92882 states and 131972 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-19 07:31:40,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []