./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-ath-ath10k-ath10k_pci.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:43:07,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:43:07,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:43:07,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:43:07,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:43:07,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:43:07,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:43:07,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:43:07,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:43:07,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:43:07,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:43:07,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:43:07,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:43:07,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:43:07,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:43:07,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:43:07,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:43:07,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:43:07,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:43:08,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:43:08,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:43:08,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:43:08,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:43:08,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:43:08,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:43:08,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:43:08,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:43:08,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:43:08,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:43:08,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:43:08,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:43:08,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:43:08,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:43:08,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:43:08,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:43:08,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:43:08,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:43:08,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:43:08,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:43:08,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:43:08,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:43:08,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:43:08,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:43:08,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:43:08,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:43:08,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:43:08,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:43:08,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:43:08,097 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:43:08,097 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:43:08,097 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:43:08,097 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:43:08,098 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:43:08,099 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:43:08,099 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:43:08,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:43:08,099 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:43:08,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:43:08,100 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:43:08,100 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:43:08,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:43:08,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:43:08,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:43:08,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:43:08,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:43:08,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:43:08,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:43:08,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:43:08,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:43:08,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:43:08,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:43:08,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:08,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:43:08,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:43:08,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:43:08,106 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:43:08,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:43:08,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:43:08,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:43:08,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:43:08,107 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad99b1dbefac8c1e84a85aaa3f3639700dac2f8335de90a015e2768054e31e7e [2021-11-23 03:43:08,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:43:08,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:43:08,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:43:08,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:43:08,427 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:43:08,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-23 03:43:08,504 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/data/d3f886952/46f59085896f4a8ebd98f4cfc9538303/FLAGcdc8149c9 [2021-11-23 03:43:09,472 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:43:09,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-23 03:43:09,555 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/data/d3f886952/46f59085896f4a8ebd98f4cfc9538303/FLAGcdc8149c9 [2021-11-23 03:43:09,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/data/d3f886952/46f59085896f4a8ebd98f4cfc9538303 [2021-11-23 03:43:09,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:43:09,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:43:09,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:09,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:43:09,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:43:09,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:09" (1/1) ... [2021-11-23 03:43:09,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66518539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:09, skipping insertion in model container [2021-11-23 03:43:09,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:09" (1/1) ... [2021-11-23 03:43:09,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:43:10,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:43:14,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-23 03:43:14,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-23 03:43:14,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:14,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:43:14,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445039,445052] [2021-11-23 03:43:14,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i[445184,445197] [2021-11-23 03:43:14,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:14,856 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:43:14,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14 WrapperNode [2021-11-23 03:43:14,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:14,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:14,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:43:14,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:43:14,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,285 INFO L137 Inliner]: procedures = 533, calls = 2779, calls flagged for inlining = 243, calls inlined = 223, statements flattened = 6822 [2021-11-23 03:43:15,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:15,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:43:15,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:43:15,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:43:15,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:43:15,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:43:15,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:43:15,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:43:15,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (1/1) ... [2021-11-23 03:43:15,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:15,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:43:15,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:43:15,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:43:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_per_engine_handler_adjust [2021-11-23 03:43:15,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_per_engine_handler_adjust [2021-11-23 03:43:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:43:15,836 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:43:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-23 03:43:15,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-23 03:43:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_core_destroy [2021-11-23 03:43:15,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_core_destroy [2021-11-23 03:43:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:43:15,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:43:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 03:43:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 03:43:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_watermark_intr_disable [2021-11-23 03:43:15,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_watermark_intr_disable [2021-11-23 03:43:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 03:43:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 03:43:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_completed_recv_next [2021-11-23 03:43:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_completed_recv_next [2021-11-23 03:43:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 03:43:15,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 03:43:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_completed_send_next [2021-11-23 03:43:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_completed_send_next [2021-11-23 03:43:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:43:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:43:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_ce_deinit [2021-11-23 03:43:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_ce_deinit [2021-11-23 03:43:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_start [2021-11-23 03:43:15,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_start [2021-11-23 03:43:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_resume [2021-11-23 03:43:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_resume [2021-11-23 03:43:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:43:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:43:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_read32 [2021-11-23 03:43:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_read32 [2021-11-23 03:43:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 03:43:15,842 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 03:43:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:43:15,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:43:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ath10k_pci_exit_13_2 [2021-11-23 03:43:15,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ath10k_pci_exit_13_2 [2021-11-23 03:43:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2021-11-23 03:43:15,843 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2021-11-23 03:43:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:43:15,843 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-23 03:43:15,843 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-23 03:43:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_write_mem [2021-11-23 03:43:15,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_write_mem [2021-11-23 03:43:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 03:43:15,844 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 03:43:15,844 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:43:15,844 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:43:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_base_address [2021-11-23 03:43:15,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_base_address [2021-11-23 03:43:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_write_access [2021-11-23 03:43:15,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_write_access [2021-11-23 03:43:15,845 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-23 03:43:15,846 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-23 03:43:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:43:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:43:15,846 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:43:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:43:15,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:43:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:43:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:43:15,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:43:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:43:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:43:15,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:43:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_84 [2021-11-23 03:43:15,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_84 [2021-11-23 03:43:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-23 03:43:15,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-23 03:43:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:43:15,848 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:43:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_86 [2021-11-23 03:43:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_86 [2021-11-23 03:43:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_88 [2021-11-23 03:43:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_88 [2021-11-23 03:43:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 03:43:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 03:43:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:43:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:43:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_wake [2021-11-23 03:43:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_wake [2021-11-23 03:43:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:43:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:43:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 03:43:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 03:43:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_copy_complete_intr_disable [2021-11-23 03:43:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_copy_complete_intr_disable [2021-11-23 03:43:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure get_free_compl [2021-11-23 03:43:15,856 INFO L138 BoogieDeclarations]: Found implementation of procedure get_free_compl [2021-11-23 03:43:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_process_ce [2021-11-23 03:43:15,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_process_ce [2021-11-23 03:43:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_reg_read32 [2021-11-23 03:43:15,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_reg_read32 [2021-11-23 03:43:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 03:43:15,857 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 03:43:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 03:43:15,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 03:43:15,857 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 03:43:15,858 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 03:43:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_do_pci_wake [2021-11-23 03:43:15,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_do_pci_wake [2021-11-23 03:43:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_cleanup_ce [2021-11-23 03:43:15,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_cleanup_ce [2021-11-23 03:43:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_disable_interrupts [2021-11-23 03:43:15,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_disable_interrupts [2021-11-23 03:43:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:43:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 03:43:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 03:43:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:43:15,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:43:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_sleep [2021-11-23 03:43:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_sleep [2021-11-23 03:43:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 03:43:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 03:43:15,865 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-23 03:43:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-23 03:43:15,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:43:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:43:15,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:43:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:43:15,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:43:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_request_early_irq [2021-11-23 03:43:15,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_request_early_irq [2021-11-23 03:43:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:43:15,872 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-23 03:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-23 03:43:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:43:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_reg_write32 [2021-11-23 03:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_reg_write32 [2021-11-23 03:43:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:43:15,873 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 03:43:15,873 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 03:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:43:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-23 03:43:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-23 03:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_get_free_queue_number [2021-11-23 03:43:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_get_free_queue_number [2021-11-23 03:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_stop [2021-11-23 03:43:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_stop [2021-11-23 03:43:15,874 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_recv_buf_enqueue [2021-11-23 03:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_recv_buf_enqueue [2021-11-23 03:43:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_priv [2021-11-23 03:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_priv [2021-11-23 03:43:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:43:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:43:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:43:15,875 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_deinit [2021-11-23 03:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_deinit [2021-11-23 03:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure __roundup_pow_of_two [2021-11-23 03:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __roundup_pow_of_two [2021-11-23 03:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_rx_pipe_cleanup [2021-11-23 03:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_rx_pipe_cleanup [2021-11-23 03:43:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_revoke_recv_next [2021-11-23 03:43:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_revoke_recv_next [2021-11-23 03:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_access [2021-11-23 03:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_access [2021-11-23 03:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-23 03:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-23 03:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_stop_ce [2021-11-23 03:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_stop_ce [2021-11-23 03:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_device_reset [2021-11-23 03:43:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_device_reset [2021-11-23 03:43:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:43:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:43:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_post_rx_pipe [2021-11-23 03:43:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_post_rx_pipe [2021-11-23 03:43:15,878 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_free_irq [2021-11-23 03:43:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_free_irq [2021-11-23 03:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 03:43:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 03:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_region [2021-11-23 03:43:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_region [2021-11-23 03:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_power_down [2021-11-23 03:43:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_power_down [2021-11-23 03:43:15,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 03:43:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 03:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_per_engine_service [2021-11-23 03:43:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_per_engine_service [2021-11-23 03:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:43:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:43:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_send [2021-11-23 03:43:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_send [2021-11-23 03:43:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_suspend [2021-11-23 03:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_suspend [2021-11-23 03:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 03:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 03:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-23 03:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-23 03:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-23 03:43:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-23 03:43:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:43:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_src_ring_read_index_get [2021-11-23 03:43:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_src_ring_read_index_get [2021-11-23 03:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure ATH10K_SKB_CB [2021-11-23 03:43:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ATH10K_SKB_CB [2021-11-23 03:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_free_early_irq [2021-11-23 03:43:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_free_early_irq [2021-11-23 03:43:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:43:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 03:43:15,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-23 03:43:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_do_pci_sleep [2021-11-23 03:43:15,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_do_pci_sleep [2021-11-23 03:43:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_kill_tasklet [2021-11-23 03:43:15,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_kill_tasklet [2021-11-23 03:43:15,884 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_remove [2021-11-23 03:43:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_remove [2021-11-23 03:43:15,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:43:15,885 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 03:43:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 03:43:15,885 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_disable_and_clear_legacy_irq [2021-11-23 03:43:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_disable_and_clear_legacy_irq [2021-11-23 03:43:15,885 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:43:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:43:15,885 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 03:43:15,886 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 03:43:15,886 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_irq_pending [2021-11-23 03:43:15,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_irq_pending [2021-11-23 03:43:15,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-23 03:43:15,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-23 03:43:15,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:43:15,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:43:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 03:43:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 03:43:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:43:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:43:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-23 03:43:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-23 03:43:15,891 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 03:43:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 03:43:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_87 [2021-11-23 03:43:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_87 [2021-11-23 03:43:15,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_85 [2021-11-23 03:43:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_85 [2021-11-23 03:43:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_83 [2021-11-23 03:43:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_83 [2021-11-23 03:43:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_write32 [2021-11-23 03:43:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_write32 [2021-11-23 03:43:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_map_service_to_pipe [2021-11-23 03:43:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_map_service_to_pipe [2021-11-23 03:43:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msi_block [2021-11-23 03:43:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msi_block [2021-11-23 03:43:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:43:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:43:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:43:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:43:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:43:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_3_6 [2021-11-23 03:43:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_3_6 [2021-11-23 03:43:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:43:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:43:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-23 03:43:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-23 03:43:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 03:43:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 03:43:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_dbg_dump [2021-11-23 03:43:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_dbg_dump [2021-11-23 03:43:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2021-11-23 03:43:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2021-11-23 03:43:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_hif_power_up [2021-11-23 03:43:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_hif_power_up [2021-11-23 03:43:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:43:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:43:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_deinit_irq [2021-11-23 03:43:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_deinit_irq [2021-11-23 03:43:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_master [2021-11-23 03:43:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_master [2021-11-23 03:43:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 03:43:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 03:43:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure host_interest_item_address [2021-11-23 03:43:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure host_interest_item_address [2021-11-23 03:43:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_pci_diag_read_mem [2021-11-23 03:43:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_pci_diag_read_mem [2021-11-23 03:43:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-23 03:43:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-23 03:43:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-23 03:43:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-23 03:43:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_cancel_send_next [2021-11-23 03:43:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_cancel_send_next [2021-11-23 03:43:15,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:43:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:43:15,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:43:15,898 INFO L130 BoogieDeclarations]: Found specification of procedure ath10k_ce_engine_int_status_clear [2021-11-23 03:43:15,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ath10k_ce_engine_int_status_clear [2021-11-23 03:43:17,008 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:43:17,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:43:17,221 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:43:22,110 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:43:22,292 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:43:23,504 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:43:23,504 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:43:23,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:23 BoogieIcfgContainer [2021-11-23 03:43:23,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:43:23,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:43:23,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:43:23,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:43:23,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:43:09" (1/3) ... [2021-11-23 03:43:23,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db82e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:23, skipping insertion in model container [2021-11-23 03:43:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:14" (2/3) ... [2021-11-23 03:43:23,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db82e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:43:23, skipping insertion in model container [2021-11-23 03:43:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:43:23" (3/3) ... [2021-11-23 03:43:23,523 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-ath-ath10k-ath10k_pci.cil.i [2021-11-23 03:43:23,529 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:43:23,529 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:43:23,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:43:23,625 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:43:23,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:43:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 2073 states, 1194 states have (on average 1.295644891122278) internal successors, (1547), 1241 states have internal predecessors, (1547), 741 states have call successors, (741), 142 states have call predecessors, (741), 141 states have return successors, (732), 726 states have call predecessors, (732), 732 states have call successors, (732) [2021-11-23 03:43:23,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-23 03:43:23,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:23,739 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:23,739 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:23,745 INFO L85 PathProgramCache]: Analyzing trace with hash 973588671, now seen corresponding path program 1 times [2021-11-23 03:43:23,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078668960] [2021-11-23 03:43:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:23,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:24,484 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-11-23 03:43:24,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:24,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078668960] [2021-11-23 03:43:24,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078668960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:24,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:24,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:24,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437211401] [2021-11-23 03:43:24,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:24,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:24,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:24,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:24,553 INFO L87 Difference]: Start difference. First operand has 2073 states, 1194 states have (on average 1.295644891122278) internal successors, (1547), 1241 states have internal predecessors, (1547), 741 states have call successors, (741), 142 states have call predecessors, (741), 141 states have return successors, (732), 726 states have call predecessors, (732), 732 states have call successors, (732) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:43:26,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:30,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:33,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:35,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:35,965 INFO L93 Difference]: Finished difference Result 5980 states and 8790 transitions. [2021-11-23 03:43:35,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 186 [2021-11-23 03:43:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:36,035 INFO L225 Difference]: With dead ends: 5980 [2021-11-23 03:43:36,035 INFO L226 Difference]: Without dead ends: 3872 [2021-11-23 03:43:36,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:36,069 INFO L933 BasicCegarLoop]: 3476 mSDtfsCounter, 2706 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 6108 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:36,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2711 Valid, 6108 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 698 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2021-11-23 03:43:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-11-23 03:43:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3869. [2021-11-23 03:43:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 2250 states have (on average 1.2835555555555556) internal successors, (2888), 2325 states have internal predecessors, (2888), 1345 states have call successors, (1345), 273 states have call predecessors, (1345), 273 states have return successors, (1350), 1332 states have call predecessors, (1350), 1345 states have call successors, (1350) [2021-11-23 03:43:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 5583 transitions. [2021-11-23 03:43:36,488 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 5583 transitions. Word has length 186 [2021-11-23 03:43:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:36,493 INFO L470 AbstractCegarLoop]: Abstraction has 3869 states and 5583 transitions. [2021-11-23 03:43:36,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-23 03:43:36,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 5583 transitions. [2021-11-23 03:43:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-23 03:43:36,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:36,515 INFO L514 BasicCegarLoop]: trace histogram [19, 15, 15, 15, 15, 15, 15, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:36,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:43:36,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:36,517 INFO L85 PathProgramCache]: Analyzing trace with hash 738020420, now seen corresponding path program 1 times [2021-11-23 03:43:36,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:36,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578878314] [2021-11-23 03:43:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:36,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-23 03:43:36,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:36,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578878314] [2021-11-23 03:43:36,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578878314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:36,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:36,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:36,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827346595] [2021-11-23 03:43:36,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:36,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:36,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:36,902 INFO L87 Difference]: Start difference. First operand 3869 states and 5583 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-23 03:43:39,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:43,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:46,099 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:48,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:50,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:43:50,817 INFO L93 Difference]: Finished difference Result 9498 states and 13703 transitions. [2021-11-23 03:43:50,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:43:50,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 233 [2021-11-23 03:43:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:43:50,885 INFO L225 Difference]: With dead ends: 9498 [2021-11-23 03:43:50,886 INFO L226 Difference]: Without dead ends: 5660 [2021-11-23 03:43:50,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:50,919 INFO L933 BasicCegarLoop]: 4884 mSDtfsCounter, 2533 mSDsluCounter, 2860 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 7448 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:43:50,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2541 Valid, 7448 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 927 Invalid, 4 Unknown, 0 Unchecked, 13.5s Time] [2021-11-23 03:43:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5660 states. [2021-11-23 03:43:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5660 to 5655. [2021-11-23 03:43:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 3283 states have (on average 1.2805360950350289) internal successors, (4204), 3394 states have internal predecessors, (4204), 1965 states have call successors, (1965), 406 states have call predecessors, (1965), 406 states have return successors, (1978), 1943 states have call predecessors, (1978), 1965 states have call successors, (1978) [2021-11-23 03:43:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8147 transitions. [2021-11-23 03:43:51,322 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8147 transitions. Word has length 233 [2021-11-23 03:43:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:43:51,324 INFO L470 AbstractCegarLoop]: Abstraction has 5655 states and 8147 transitions. [2021-11-23 03:43:51,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-23 03:43:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8147 transitions. [2021-11-23 03:43:51,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-23 03:43:51,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:43:51,336 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:43:51,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:43:51,337 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:43:51,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:43:51,337 INFO L85 PathProgramCache]: Analyzing trace with hash -787524890, now seen corresponding path program 1 times [2021-11-23 03:43:51,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:43:51,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118555432] [2021-11-23 03:43:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:43:51,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:43:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:43:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1004 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2021-11-23 03:43:51,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:43:51,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118555432] [2021-11-23 03:43:51,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118555432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:43:51,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:43:51,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:43:51,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501837777] [2021-11-23 03:43:51,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:43:51,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:43:51,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:43:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:43:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:43:51,646 INFO L87 Difference]: Start difference. First operand 5655 states and 8147 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-23 03:43:53,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:43:59,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:02,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:05,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:05,759 INFO L93 Difference]: Finished difference Result 13417 states and 19310 transitions. [2021-11-23 03:44:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:05,759 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, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 240 [2021-11-23 03:44:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:05,828 INFO L225 Difference]: With dead ends: 13417 [2021-11-23 03:44:05,828 INFO L226 Difference]: Without dead ends: 7793 [2021-11-23 03:44:05,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:05,860 INFO L933 BasicCegarLoop]: 4537 mSDtfsCounter, 2427 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 17 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 7084 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:05,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 7084 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 896 Invalid, 4 Unknown, 0 Unchecked, 13.8s Time] [2021-11-23 03:44:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7793 states. [2021-11-23 03:44:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7793 to 7785. [2021-11-23 03:44:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7785 states, 4550 states have (on average 1.2764835164835164) internal successors, (5808), 4711 states have internal predecessors, (5808), 2667 states have call successors, (2667), 567 states have call predecessors, (2667), 567 states have return successors, (2685), 2631 states have call predecessors, (2685), 2667 states have call successors, (2685) [2021-11-23 03:44:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7785 states to 7785 states and 11160 transitions. [2021-11-23 03:44:06,301 INFO L78 Accepts]: Start accepts. Automaton has 7785 states and 11160 transitions. Word has length 240 [2021-11-23 03:44:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:06,302 INFO L470 AbstractCegarLoop]: Abstraction has 7785 states and 11160 transitions. [2021-11-23 03:44:06,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-23 03:44:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 7785 states and 11160 transitions. [2021-11-23 03:44:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-23 03:44:06,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:06,318 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:06,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:44:06,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1797220059, now seen corresponding path program 1 times [2021-11-23 03:44:06,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:06,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972941884] [2021-11-23 03:44:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:06,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2021-11-23 03:44:06,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972941884] [2021-11-23 03:44:06,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972941884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:06,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:06,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:06,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063075201] [2021-11-23 03:44:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:06,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:06,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:06,522 INFO L87 Difference]: Start difference. First operand 7785 states and 11160 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-23 03:44:08,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:13,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:16,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:16,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:16,303 INFO L93 Difference]: Finished difference Result 15762 states and 22550 transitions. [2021-11-23 03:44:16,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:16,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 255 [2021-11-23 03:44:16,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:16,376 INFO L225 Difference]: With dead ends: 15762 [2021-11-23 03:44:16,376 INFO L226 Difference]: Without dead ends: 8008 [2021-11-23 03:44:16,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:16,424 INFO L933 BasicCegarLoop]: 2643 mSDtfsCounter, 262 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 5216 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:16,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 5216 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 640 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-23 03:44:16,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8008 states. [2021-11-23 03:44:16,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8008 to 8008. [2021-11-23 03:44:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8008 states, 4697 states have (on average 1.273578880136257) internal successors, (5982), 4860 states have internal predecessors, (5982), 2716 states have call successors, (2716), 594 states have call predecessors, (2716), 594 states have return successors, (2734), 2680 states have call predecessors, (2734), 2716 states have call successors, (2734) [2021-11-23 03:44:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8008 states to 8008 states and 11432 transitions. [2021-11-23 03:44:16,955 INFO L78 Accepts]: Start accepts. Automaton has 8008 states and 11432 transitions. Word has length 255 [2021-11-23 03:44:16,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:16,956 INFO L470 AbstractCegarLoop]: Abstraction has 8008 states and 11432 transitions. [2021-11-23 03:44:16,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-23 03:44:16,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8008 states and 11432 transitions. [2021-11-23 03:44:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-23 03:44:16,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:16,975 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 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] [2021-11-23 03:44:16,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:44:16,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:16,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1586378558, now seen corresponding path program 1 times [2021-11-23 03:44:16,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:16,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125322177] [2021-11-23 03:44:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:16,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2021-11-23 03:44:17,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:17,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125322177] [2021-11-23 03:44:17,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125322177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:17,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:17,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:44:17,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860761160] [2021-11-23 03:44:17,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:17,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:44:17,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:44:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:17,222 INFO L87 Difference]: Start difference. First operand 8008 states and 11432 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:44:18,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:22,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:26,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:28,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:28,991 INFO L93 Difference]: Finished difference Result 17975 states and 25665 transitions. [2021-11-23 03:44:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:44:28,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 278 [2021-11-23 03:44:28,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:29,060 INFO L225 Difference]: With dead ends: 17975 [2021-11-23 03:44:29,060 INFO L226 Difference]: Without dead ends: 10175 [2021-11-23 03:44:29,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:44:29,098 INFO L933 BasicCegarLoop]: 4769 mSDtfsCounter, 2435 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2440 SdHoareTripleChecker+Valid, 7305 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:29,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2440 Valid, 7305 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 957 Invalid, 3 Unknown, 0 Unchecked, 11.5s Time] [2021-11-23 03:44:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10175 states. [2021-11-23 03:44:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10175 to 10167. [2021-11-23 03:44:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10167 states, 5976 states have (on average 1.2714190093708166) internal successors, (7598), 6189 states have internal predecessors, (7598), 3425 states have call successors, (3425), 765 states have call predecessors, (3425), 765 states have return successors, (3448), 3375 states have call predecessors, (3448), 3425 states have call successors, (3448) [2021-11-23 03:44:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10167 states to 10167 states and 14471 transitions. [2021-11-23 03:44:29,663 INFO L78 Accepts]: Start accepts. Automaton has 10167 states and 14471 transitions. Word has length 278 [2021-11-23 03:44:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:29,665 INFO L470 AbstractCegarLoop]: Abstraction has 10167 states and 14471 transitions. [2021-11-23 03:44:29,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-23 03:44:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 10167 states and 14471 transitions. [2021-11-23 03:44:29,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-23 03:44:29,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:29,679 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:29,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:44:29,679 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash 647851938, now seen corresponding path program 1 times [2021-11-23 03:44:29,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:29,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856638968] [2021-11-23 03:44:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:29,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2021-11-23 03:44:30,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:30,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856638968] [2021-11-23 03:44:30,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856638968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:30,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:30,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:44:30,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118530958] [2021-11-23 03:44:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:30,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:44:30,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:44:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:44:30,485 INFO L87 Difference]: Start difference. First operand 10167 states and 14471 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:44:36,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:38,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:42,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:44,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:45,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:48,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:53,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:56,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:44:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:44:56,600 INFO L93 Difference]: Finished difference Result 17759 states and 25306 transitions. [2021-11-23 03:44:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:44:56,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 297 [2021-11-23 03:44:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:44:56,695 INFO L225 Difference]: With dead ends: 17759 [2021-11-23 03:44:56,695 INFO L226 Difference]: Without dead ends: 17757 [2021-11-23 03:44:56,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:44:56,705 INFO L933 BasicCegarLoop]: 3129 mSDtfsCounter, 2089 mSDsluCounter, 12094 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 6 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 13969 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:44:56,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 13969 Invalid, 2808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 2796 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2021-11-23 03:44:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17757 states. [2021-11-23 03:44:57,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17757 to 17727. [2021-11-23 03:44:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17727 states, 10467 states have (on average 1.2719977070793924) internal successors, (13314), 10884 states have internal predecessors, (13314), 5885 states have call successors, (5885), 1416 states have call predecessors, (5885), 1374 states have return successors, (6052), 5678 states have call predecessors, (6052), 5885 states have call successors, (6052) [2021-11-23 03:44:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17727 states to 17727 states and 25251 transitions. [2021-11-23 03:44:57,926 INFO L78 Accepts]: Start accepts. Automaton has 17727 states and 25251 transitions. Word has length 297 [2021-11-23 03:44:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:44:57,927 INFO L470 AbstractCegarLoop]: Abstraction has 17727 states and 25251 transitions. [2021-11-23 03:44:57,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:44:57,928 INFO L276 IsEmpty]: Start isEmpty. Operand 17727 states and 25251 transitions. [2021-11-23 03:44:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-11-23 03:44:57,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:44:57,982 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 10, 10, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:44:57,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:44:57,983 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:44:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:44:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash -541505304, now seen corresponding path program 1 times [2021-11-23 03:44:57,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:44:57,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900082815] [2021-11-23 03:44:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:44:57,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:44:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:44:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2021-11-23 03:44:58,261 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:44:58,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900082815] [2021-11-23 03:44:58,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900082815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:44:58,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:44:58,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:44:58,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409869270] [2021-11-23 03:44:58,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:44:58,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:44:58,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:44:58,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:44:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:44:58,265 INFO L87 Difference]: Start difference. First operand 17727 states and 25251 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-23 03:45:00,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:02,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:04,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:06,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:08,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:09,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:11,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:15,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:18,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:20,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:20,629 INFO L93 Difference]: Finished difference Result 35306 states and 50459 transitions. [2021-11-23 03:45:20,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:45:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) Word has length 404 [2021-11-23 03:45:20,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:20,722 INFO L225 Difference]: With dead ends: 35306 [2021-11-23 03:45:20,722 INFO L226 Difference]: Without dead ends: 17787 [2021-11-23 03:45:20,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:45:20,787 INFO L933 BasicCegarLoop]: 2606 mSDtfsCounter, 19 mSDsluCounter, 8729 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 10393 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:20,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 10393 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1262 Invalid, 6 Unknown, 0 Unchecked, 21.4s Time] [2021-11-23 03:45:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17787 states. [2021-11-23 03:45:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17787 to 17767. [2021-11-23 03:45:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17767 states, 10497 states have (on average 1.271220348671049) internal successors, (13344), 10914 states have internal predecessors, (13344), 5885 states have call successors, (5885), 1416 states have call predecessors, (5885), 1384 states have return successors, (6088), 5688 states have call predecessors, (6088), 5885 states have call successors, (6088) [2021-11-23 03:45:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17767 states to 17767 states and 25317 transitions. [2021-11-23 03:45:22,142 INFO L78 Accepts]: Start accepts. Automaton has 17767 states and 25317 transitions. Word has length 404 [2021-11-23 03:45:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:22,144 INFO L470 AbstractCegarLoop]: Abstraction has 17767 states and 25317 transitions. [2021-11-23 03:45:22,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (58), 2 states have call predecessors, (58), 3 states have return successors, (54), 3 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-23 03:45:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 17767 states and 25317 transitions. [2021-11-23 03:45:22,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-11-23 03:45:22,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:22,210 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 10, 10, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:22,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:45:22,211 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1976405911, now seen corresponding path program 1 times [2021-11-23 03:45:22,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:22,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872047533] [2021-11-23 03:45:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:22,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2021-11-23 03:45:22,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:22,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872047533] [2021-11-23 03:45:22,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872047533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:22,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:22,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:45:22,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849594515] [2021-11-23 03:45:22,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:22,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:45:22,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:22,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:45:22,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:22,512 INFO L87 Difference]: Start difference. First operand 17767 states and 25317 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-23 03:45:24,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:27,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:29,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:32,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:34,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:45:34,769 INFO L93 Difference]: Finished difference Result 35416 states and 51240 transitions. [2021-11-23 03:45:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:45:34,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 419 [2021-11-23 03:45:34,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:45:34,860 INFO L225 Difference]: With dead ends: 35416 [2021-11-23 03:45:34,860 INFO L226 Difference]: Without dead ends: 17857 [2021-11-23 03:45:34,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:45:34,941 INFO L933 BasicCegarLoop]: 2605 mSDtfsCounter, 4 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5198 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:45:34,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 5198 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 629 Invalid, 2 Unknown, 0 Unchecked, 11.4s Time] [2021-11-23 03:45:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17857 states. [2021-11-23 03:45:36,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17857 to 17837. [2021-11-23 03:45:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17837 states, 10547 states have (on average 1.270882715464113) internal successors, (13404), 10964 states have internal predecessors, (13404), 5905 states have call successors, (5905), 1416 states have call predecessors, (5905), 1384 states have return successors, (6108), 5708 states have call predecessors, (6108), 5905 states have call successors, (6108) [2021-11-23 03:45:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17837 states to 17837 states and 25417 transitions. [2021-11-23 03:45:36,138 INFO L78 Accepts]: Start accepts. Automaton has 17837 states and 25417 transitions. Word has length 419 [2021-11-23 03:45:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:45:36,139 INFO L470 AbstractCegarLoop]: Abstraction has 17837 states and 25417 transitions. [2021-11-23 03:45:36,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (61), 2 states have call predecessors, (61), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-23 03:45:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 17837 states and 25417 transitions. [2021-11-23 03:45:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-23 03:45:36,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:45:36,204 INFO L514 BasicCegarLoop]: trace histogram [21, 15, 15, 15, 15, 15, 15, 14, 14, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:45:36,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:45:36,205 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:45:36,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:45:36,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1980306030, now seen corresponding path program 1 times [2021-11-23 03:45:36,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:45:36,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702308177] [2021-11-23 03:45:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:45:36,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:45:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:45:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2021-11-23 03:45:37,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:45:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702308177] [2021-11-23 03:45:37,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702308177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:45:37,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:45:37,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:45:37,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998029555] [2021-11-23 03:45:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:45:37,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:45:37,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:45:37,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:45:37,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:45:37,822 INFO L87 Difference]: Start difference. First operand 17837 states and 25417 transitions. Second operand has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 6 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (56), 7 states have call predecessors, (56), 6 states have call successors, (56) [2021-11-23 03:45:43,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:46,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:49,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:50,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:45:52,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:01,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:03,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:05,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:10,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:13,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:17,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:20,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:22,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:28,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:33,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:34,315 INFO L93 Difference]: Finished difference Result 44822 states and 64154 transitions. [2021-11-23 03:46:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 03:46:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 6 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (56), 7 states have call predecessors, (56), 6 states have call successors, (56) Word has length 422 [2021-11-23 03:46:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:34,560 INFO L225 Difference]: With dead ends: 44822 [2021-11-23 03:46:34,560 INFO L226 Difference]: Without dead ends: 44820 [2021-11-23 03:46:34,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:46:34,583 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 12035 mSDsluCounter, 21986 mSDsCounter, 0 mSdLazyCounter, 9099 mSolverCounterSat, 6288 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12102 SdHoareTripleChecker+Valid, 24331 SdHoareTripleChecker+Invalid, 15396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 6288 IncrementalHoareTripleChecker+Valid, 9099 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:34,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12102 Valid, 24331 Invalid, 15396 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [6288 Valid, 9099 Invalid, 9 Unknown, 0 Unchecked, 53.4s Time] [2021-11-23 03:46:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44820 states. [2021-11-23 03:46:37,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44820 to 44738. [2021-11-23 03:46:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44738 states, 26371 states have (on average 1.2688938606802926) internal successors, (33462), 27440 states have internal predecessors, (33462), 14690 states have call successors, (14690), 3748 states have call predecessors, (14690), 3676 states have return successors, (15869), 14147 states have call predecessors, (15869), 14690 states have call successors, (15869) [2021-11-23 03:46:37,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44738 states to 44738 states and 64021 transitions. [2021-11-23 03:46:37,735 INFO L78 Accepts]: Start accepts. Automaton has 44738 states and 64021 transitions. Word has length 422 [2021-11-23 03:46:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:37,736 INFO L470 AbstractCegarLoop]: Abstraction has 44738 states and 64021 transitions. [2021-11-23 03:46:37,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 6 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (56), 7 states have call predecessors, (56), 6 states have call successors, (56) [2021-11-23 03:46:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 44738 states and 64021 transitions. [2021-11-23 03:46:37,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-23 03:46:37,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:37,804 INFO L514 BasicCegarLoop]: trace histogram [21, 16, 16, 15, 15, 15, 15, 15, 15, 8, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:37,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:46:37,804 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:37,805 INFO L85 PathProgramCache]: Analyzing trace with hash 741442403, now seen corresponding path program 1 times [2021-11-23 03:46:37,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:37,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427643179] [2021-11-23 03:46:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:37,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1535 trivial. 0 not checked. [2021-11-23 03:46:39,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:39,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427643179] [2021-11-23 03:46:39,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427643179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:46:39,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:46:39,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:46:39,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772340341] [2021-11-23 03:46:39,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:39,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:46:39,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:46:39,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:46:39,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:46:39,493 INFO L87 Difference]: Start difference. First operand 44738 states and 64021 transitions. Second operand has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (70), 4 states have call predecessors, (70), 5 states have return successors, (66), 9 states have call predecessors, (66), 8 states have call successors, (66) [2021-11-23 03:46:44,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:48,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:51,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:52,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:46:55,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:03,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:07,356 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:11,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:12,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:13,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:20,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:22,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:25,045 INFO L93 Difference]: Finished difference Result 44947 states and 64219 transitions. [2021-11-23 03:47:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:47:25,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (70), 4 states have call predecessors, (70), 5 states have return successors, (66), 9 states have call predecessors, (66), 8 states have call successors, (66) Word has length 460 [2021-11-23 03:47:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:25,300 INFO L225 Difference]: With dead ends: 44947 [2021-11-23 03:47:25,300 INFO L226 Difference]: Without dead ends: 44945 [2021-11-23 03:47:25,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-23 03:47:25,332 INFO L933 BasicCegarLoop]: 3350 mSDtfsCounter, 9534 mSDsluCounter, 14056 mSDsCounter, 0 mSdLazyCounter, 5740 mSolverCounterSat, 6298 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9544 SdHoareTripleChecker+Valid, 15650 SdHoareTripleChecker+Invalid, 12045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6298 IncrementalHoareTripleChecker+Valid, 5740 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:25,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9544 Valid, 15650 Invalid, 12045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6298 Valid, 5740 Invalid, 7 Unknown, 0 Unchecked, 41.3s Time] [2021-11-23 03:47:25,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44945 states. [2021-11-23 03:47:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44945 to 44884. [2021-11-23 03:47:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44884 states, 26452 states have (on average 1.2678814456373808) internal successors, (33538), 27522 states have internal predecessors, (33538), 14694 states have call successors, (14694), 3808 states have call predecessors, (14694), 3737 states have return successors, (15873), 14152 states have call predecessors, (15873), 14694 states have call successors, (15873) [2021-11-23 03:47:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44884 states to 44884 states and 64105 transitions. [2021-11-23 03:47:29,757 INFO L78 Accepts]: Start accepts. Automaton has 44884 states and 64105 transitions. Word has length 460 [2021-11-23 03:47:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:29,758 INFO L470 AbstractCegarLoop]: Abstraction has 44884 states and 64105 transitions. [2021-11-23 03:47:29,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 8 states have call successors, (70), 4 states have call predecessors, (70), 5 states have return successors, (66), 9 states have call predecessors, (66), 8 states have call successors, (66) [2021-11-23 03:47:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 44884 states and 64105 transitions. [2021-11-23 03:47:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2021-11-23 03:47:29,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:29,902 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 13, 9, 9, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:29,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:47:29,903 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:47:29,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1041007013, now seen corresponding path program 1 times [2021-11-23 03:47:29,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:47:29,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293907624] [2021-11-23 03:47:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:29,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:47:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 40 proven. 7 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2021-11-23 03:47:30,255 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:47:30,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293907624] [2021-11-23 03:47:30,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293907624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:30,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774636583] [2021-11-23 03:47:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:30,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:30,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:47:30,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:47:30,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:47:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:31,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 5283 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:47:31,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2021-11-23 03:47:32,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:47:32,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774636583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:47:32,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:47:32,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:47:32,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504909493] [2021-11-23 03:47:32,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:47:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:47:32,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:47:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:47:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:47:32,846 INFO L87 Difference]: Start difference. First operand 44884 states and 64105 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2021-11-23 03:47:36,586 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:38,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:43,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:45,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:47:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:47,211 INFO L93 Difference]: Finished difference Result 94280 states and 136134 transitions. [2021-11-23 03:47:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:47:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) Word has length 571 [2021-11-23 03:47:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:47,422 INFO L225 Difference]: With dead ends: 94280 [2021-11-23 03:47:47,422 INFO L226 Difference]: Without dead ends: 49604 [2021-11-23 03:47:47,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:47:47,596 INFO L933 BasicCegarLoop]: 2859 mSDtfsCounter, 207 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 5506 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:47,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 5506 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 638 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2021-11-23 03:47:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49604 states. [2021-11-23 03:47:51,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49604 to 44909. [2021-11-23 03:47:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44909 states, 26477 states have (on average 1.2676285077614533) internal successors, (33563), 27547 states have internal predecessors, (33563), 14694 states have call successors, (14694), 3808 states have call predecessors, (14694), 3737 states have return successors, (15873), 14152 states have call predecessors, (15873), 14694 states have call successors, (15873) [2021-11-23 03:47:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44909 states to 44909 states and 64130 transitions. [2021-11-23 03:47:52,155 INFO L78 Accepts]: Start accepts. Automaton has 44909 states and 64130 transitions. Word has length 571 [2021-11-23 03:47:52,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:52,157 INFO L470 AbstractCegarLoop]: Abstraction has 44909 states and 64130 transitions. [2021-11-23 03:47:52,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (74), 2 states have call predecessors, (74), 2 states have call successors, (74) [2021-11-23 03:47:52,157 INFO L276 IsEmpty]: Start isEmpty. Operand 44909 states and 64130 transitions. [2021-11-23 03:47:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2021-11-23 03:47:52,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:52,274 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 14, 9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:52,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:52,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 03:47:52,476 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:47:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:52,477 INFO L85 PathProgramCache]: Analyzing trace with hash 9587588, now seen corresponding path program 1 times [2021-11-23 03:47:52,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:47:52,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910213036] [2021-11-23 03:47:52,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:52,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:47:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 40 proven. 7 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-23 03:47:52,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:47:52,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910213036] [2021-11-23 03:47:52,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910213036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:52,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467144291] [2021-11-23 03:47:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:52,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:52,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:47:52,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:47:52,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:47:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:54,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 5408 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:47:54,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2021-11-23 03:47:55,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:47:55,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467144291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:47:55,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:47:55,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:47:55,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044726036] [2021-11-23 03:47:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:47:55,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:47:55,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:47:55,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:47:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:47:55,304 INFO L87 Difference]: Start difference. First operand 44909 states and 64130 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-23 03:47:59,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:00,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:02,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:07,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:09,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:11,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:11,424 INFO L93 Difference]: Finished difference Result 89685 states and 128233 transitions. [2021-11-23 03:48:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:48:11,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 589 [2021-11-23 03:48:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:11,624 INFO L225 Difference]: With dead ends: 89685 [2021-11-23 03:48:11,624 INFO L226 Difference]: Without dead ends: 44984 [2021-11-23 03:48:11,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:48:11,761 INFO L933 BasicCegarLoop]: 2603 mSDtfsCounter, 1 mSDsluCounter, 2911 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5203 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:11,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 5203 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 628 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2021-11-23 03:48:11,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44984 states. [2021-11-23 03:48:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44984 to 44934. [2021-11-23 03:48:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44934 states, 26502 states have (on average 1.2673760470907856) internal successors, (33588), 27572 states have internal predecessors, (33588), 14694 states have call successors, (14694), 3808 states have call predecessors, (14694), 3737 states have return successors, (15873), 14152 states have call predecessors, (15873), 14694 states have call successors, (15873) [2021-11-23 03:48:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44934 states to 44934 states and 64155 transitions. [2021-11-23 03:48:15,674 INFO L78 Accepts]: Start accepts. Automaton has 44934 states and 64155 transitions. Word has length 589 [2021-11-23 03:48:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:15,675 INFO L470 AbstractCegarLoop]: Abstraction has 44934 states and 64155 transitions. [2021-11-23 03:48:15,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 2 states have call successors, (79), 2 states have call predecessors, (79), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-23 03:48:15,676 INFO L276 IsEmpty]: Start isEmpty. Operand 44934 states and 64155 transitions. [2021-11-23 03:48:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2021-11-23 03:48:15,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:15,795 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 14, 9, 9, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:15,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:48:15,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 03:48:15,995 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:15,996 INFO L85 PathProgramCache]: Analyzing trace with hash 358681904, now seen corresponding path program 1 times [2021-11-23 03:48:15,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:15,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431458525] [2021-11-23 03:48:15,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:15,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2021-11-23 03:48:16,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:16,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431458525] [2021-11-23 03:48:16,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431458525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:16,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181382467] [2021-11-23 03:48:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:16,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:16,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:16,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:48:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:17,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 5436 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:48:17,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1591 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 1489 trivial. 0 not checked. [2021-11-23 03:48:19,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:48:19,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181382467] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:48:19,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:48:19,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:48:19,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867205644] [2021-11-23 03:48:19,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:48:19,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:48:19,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:19,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:48:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:48:19,031 INFO L87 Difference]: Start difference. First operand 44934 states and 64155 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-23 03:48:22,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:27,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:29,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:48:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:31,524 INFO L93 Difference]: Finished difference Result 89835 states and 128943 transitions. [2021-11-23 03:48:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:48:31,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) Word has length 593 [2021-11-23 03:48:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:31,683 INFO L225 Difference]: With dead ends: 89835 [2021-11-23 03:48:31,683 INFO L226 Difference]: Without dead ends: 45109 [2021-11-23 03:48:31,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:48:31,795 INFO L933 BasicCegarLoop]: 2605 mSDtfsCounter, 6 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5188 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:31,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5188 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 646 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 03:48:31,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45109 states. [2021-11-23 03:48:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45109 to 45019. [2021-11-23 03:48:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45019 states, 26567 states have (on average 1.2670982798208303) internal successors, (33663), 27647 states have internal predecessors, (33663), 14704 states have call successors, (14704), 3808 states have call predecessors, (14704), 3747 states have return successors, (15893), 14162 states have call predecessors, (15893), 14704 states have call successors, (15893) [2021-11-23 03:48:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45019 states to 45019 states and 64260 transitions. [2021-11-23 03:48:35,513 INFO L78 Accepts]: Start accepts. Automaton has 45019 states and 64260 transitions. Word has length 593 [2021-11-23 03:48:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:35,514 INFO L470 AbstractCegarLoop]: Abstraction has 45019 states and 64260 transitions. [2021-11-23 03:48:35,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (77), 2 states have call predecessors, (77), 2 states have call successors, (77) [2021-11-23 03:48:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 45019 states and 64260 transitions. [2021-11-23 03:48:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2021-11-23 03:48:35,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:35,597 INFO L514 BasicCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 14, 9, 9, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:35,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:35,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 03:48:35,798 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:35,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:35,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2037700023, now seen corresponding path program 1 times [2021-11-23 03:48:35,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:35,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479574499] [2021-11-23 03:48:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:35,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 40 proven. 7 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2021-11-23 03:48:36,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:36,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479574499] [2021-11-23 03:48:36,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479574499] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:36,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307120740] [2021-11-23 03:48:36,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:36,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:36,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:36,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:36,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73728f42-4ee3-46da-9364-68e89feae45b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:48:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:37,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 5465 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:48:37,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 1509 trivial. 0 not checked. [2021-11-23 03:48:38,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:48:38,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307120740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:48:38,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:48:38,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:48:38,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753711336] [2021-11-23 03:48:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:48:38,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:48:38,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:48:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:48:38,580 INFO L87 Difference]: Start difference. First operand 45019 states and 64260 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 3 states have call successors, (79), 3 states have call predecessors, (79), 3 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77)