./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-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:32:25,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:32:25,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:32:26,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:32:26,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:32:26,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:32:26,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:32:26,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:32:26,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:32:26,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:32:26,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:32:26,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:32:26,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:32:26,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:32:26,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:32:26,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:32:26,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:32:26,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:32:26,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:32:26,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:32:26,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:32:26,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:32:26,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:32:26,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:32:26,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:32:26,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:32:26,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:32:26,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:32:26,038 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:32:26,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:32:26,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:32:26,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:32:26,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:32:26,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:32:26,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:32:26,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:32:26,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:32:26,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:32:26,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:32:26,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:32:26,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:32:26,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:32:26,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:32:26,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:32:26,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:32:26,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:32:26,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:32:26,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:32:26,102 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:32:26,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:32:26,103 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:32:26,103 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:32:26,104 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:32:26,104 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:32:26,105 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:32:26,105 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:32:26,105 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:32:26,105 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:32:26,105 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:32:26,106 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:32:26,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:32:26,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:32:26,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:32:26,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:32:26,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:32:26,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:32:26,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:32:26,108 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:32:26,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:32:26,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:32:26,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:32:26,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:32:26,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:32:26,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:32:26,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:32:26,111 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:32:26,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:32:26,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:32:26,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:32:26,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:32:26,112 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_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2021-11-21 01:32:26,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:32:26,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:32:26,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:32:26,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:32:26,425 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:32:26,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-21 01:32:26,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/data/f0f8a34f4/4f91c1d22b324b35a81d4ff058444f8d/FLAG9c8d0937f [2021-11-21 01:32:27,392 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:32:27,393 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-21 01:32:27,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/data/f0f8a34f4/4f91c1d22b324b35a81d4ff058444f8d/FLAG9c8d0937f [2021-11-21 01:32:27,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/data/f0f8a34f4/4f91c1d22b324b35a81d4ff058444f8d [2021-11-21 01:32:27,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:32:27,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:32:27,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:32:27,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:32:27,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:32:27,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:32:27" (1/1) ... [2021-11-21 01:32:27,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59656810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:27, skipping insertion in model container [2021-11-21 01:32:27,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:32:27" (1/1) ... [2021-11-21 01:32:27,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:32:28,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:32:30,566 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_2bb68165-a04f-4343-93e9-4caa13c162c5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2021-11-21 01:32:30,569 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_2bb68165-a04f-4343-93e9-4caa13c162c5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2021-11-21 01:32:30,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:32:30,660 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:32:31,005 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_2bb68165-a04f-4343-93e9-4caa13c162c5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2021-11-21 01:32:31,006 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_2bb68165-a04f-4343-93e9-4caa13c162c5/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2021-11-21 01:32:31,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:32:31,143 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:32:31,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31 WrapperNode [2021-11-21 01:32:31,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:32:31,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:32:31,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:32:31,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:32:31,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,447 INFO L137 Inliner]: procedures = 363, calls = 2922, calls flagged for inlining = 178, calls inlined = 134, statements flattened = 4869 [2021-11-21 01:32:31,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:32:31,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:32:31,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:32:31,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:32:31,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:32:31,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:32:31,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:32:31,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:32:31,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (1/1) ... [2021-11-21 01:32:31,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:32:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:32:31,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:32:31,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb68165-a04f-4343-93e9-4caa13c162c5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:32:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 01:32:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 01:32:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-21 01:32:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-21 01:32:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-21 01:32:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:32:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:32:31,873 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:32:31,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:32:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:32:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:32:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2021-11-21 01:32:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2021-11-21 01:32:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-21 01:32:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-21 01:32:31,874 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-11-21 01:32:31,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-11-21 01:32:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:32:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:32:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2021-11-21 01:32:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2021-11-21 01:32:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-21 01:32:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-21 01:32:31,875 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 01:32:31,875 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 01:32:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2021-11-21 01:32:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2021-11-21 01:32:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-11-21 01:32:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-11-21 01:32:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2021-11-21 01:32:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2021-11-21 01:32:31,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-21 01:32:31,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-21 01:32:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:32:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-11-21 01:32:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-11-21 01:32:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:32:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:32:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:32:31,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:32:31,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:32:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2021-11-21 01:32:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2021-11-21 01:32:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:32:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:32:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2021-11-21 01:32:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2021-11-21 01:32:31,878 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2021-11-21 01:32:31,878 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2021-11-21 01:32:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 01:32:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 01:32:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 01:32:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 01:32:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-21 01:32:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-21 01:32:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:32:31,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:32:31,879 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2021-11-21 01:32:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2021-11-21 01:32:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-11-21 01:32:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-11-21 01:32:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:32:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:32:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:32:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:32:31,880 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:32:31,880 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-11-21 01:32:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-11-21 01:32:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:32:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:32:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:32:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2021-11-21 01:32:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2021-11-21 01:32:31,881 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-21 01:32:31,881 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-21 01:32:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:32:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-21 01:32:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-21 01:32:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-21 01:32:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-21 01:32:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:32:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:32:31,882 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-21 01:32:31,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-21 01:32:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:32:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:32:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:32:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:32:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-21 01:32:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-21 01:32:31,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 01:32:31,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 01:32:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-21 01:32:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-21 01:32:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:32:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:32:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:32:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2021-11-21 01:32:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2021-11-21 01:32:31,884 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-11-21 01:32:31,884 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-11-21 01:32:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2021-11-21 01:32:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2021-11-21 01:32:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:32:31,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:32:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:32:31,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:32:31,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:32:31,886 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2021-11-21 01:32:31,887 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2021-11-21 01:32:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-21 01:32:31,890 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-21 01:32:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:32:31,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:32:31,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:32:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:32:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-11-21 01:32:31,892 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-11-21 01:32:31,892 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:32:31,895 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2021-11-21 01:32:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2021-11-21 01:32:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-11-21 01:32:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-11-21 01:32:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:32:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:32:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:32:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 01:32:31,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 01:32:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 01:32:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2021-11-21 01:32:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2021-11-21 01:32:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-21 01:32:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-21 01:32:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:32:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:32:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-11-21 01:32:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-11-21 01:32:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2021-11-21 01:32:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2021-11-21 01:32:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2021-11-21 01:32:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2021-11-21 01:32:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:32:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-21 01:32:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-21 01:32:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:32:31,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:32:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:32:31,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:32:32,621 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:32:32,625 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:32:32,847 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:32:52,255 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:32:52,308 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:32:53,156 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:32:53,157 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:32:53,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:32:53 BoogieIcfgContainer [2021-11-21 01:32:53,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:32:53,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:32:53,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:32:53,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:32:53,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:32:27" (1/3) ... [2021-11-21 01:32:53,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2104e593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:32:53, skipping insertion in model container [2021-11-21 01:32:53,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:32:31" (2/3) ... [2021-11-21 01:32:53,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2104e593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:32:53, skipping insertion in model container [2021-11-21 01:32:53,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:32:53" (3/3) ... [2021-11-21 01:32:53,172 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-21 01:32:53,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:32:53,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:32:53,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:32:53,266 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:32:53,266 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:32:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) [2021-11-21 01:32:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-21 01:32:53,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:32:53,364 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:32:53,365 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:32:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:32:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2134625660, now seen corresponding path program 1 times [2021-11-21 01:32:53,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:32:53,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503484260] [2021-11-21 01:32:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:53,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:32:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-21 01:32:54,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:32:54,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503484260] [2021-11-21 01:32:54,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503484260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:32:54,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:32:54,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:32:54,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65017558] [2021-11-21 01:32:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:32:54,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:32:54,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:32:54,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:32:54,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:32:54,456 INFO L87 Difference]: Start difference. First operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:32:58,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:00,038 INFO L93 Difference]: Finished difference Result 2613 states and 3867 transitions. [2021-11-21 01:33:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:00,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 239 [2021-11-21 01:33:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:00,073 INFO L225 Difference]: With dead ends: 2613 [2021-11-21 01:33:00,073 INFO L226 Difference]: Without dead ends: 1547 [2021-11-21 01:33:00,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:00,087 INFO L933 BasicCegarLoop]: 1484 mSDtfsCounter, 812 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:00,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 2748 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 01:33:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2021-11-21 01:33:00,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1543. [2021-11-21 01:33:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 954 states have (on average 1.3092243186582808) internal successors, (1249), 966 states have internal predecessors, (1249), 492 states have call successors, (492), 96 states have call predecessors, (492), 96 states have return successors, (492), 489 states have call predecessors, (492), 492 states have call successors, (492) [2021-11-21 01:33:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2233 transitions. [2021-11-21 01:33:00,307 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2233 transitions. Word has length 239 [2021-11-21 01:33:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:00,311 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 2233 transitions. [2021-11-21 01:33:00,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 01:33:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2233 transitions. [2021-11-21 01:33:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-21 01:33:00,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:00,334 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:00,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:33:00,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1430495524, now seen corresponding path program 1 times [2021-11-21 01:33:00,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:00,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024631748] [2021-11-21 01:33:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:00,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2021-11-21 01:33:00,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024631748] [2021-11-21 01:33:00,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024631748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:00,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:00,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:00,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601460544] [2021-11-21 01:33:00,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:00,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:00,783 INFO L87 Difference]: Start difference. First operand 1543 states and 2233 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-21 01:33:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:05,683 INFO L93 Difference]: Finished difference Result 4449 states and 6431 transitions. [2021-11-21 01:33:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:05,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 252 [2021-11-21 01:33:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:05,710 INFO L225 Difference]: With dead ends: 4449 [2021-11-21 01:33:05,711 INFO L226 Difference]: Without dead ends: 2945 [2021-11-21 01:33:05,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:05,720 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1308 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:05,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 2766 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 01:33:05,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-11-21 01:33:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2939. [2021-11-21 01:33:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 1819 states have (on average 1.3100604727872458) internal successors, (2383), 1847 states have internal predecessors, (2383), 929 states have call successors, (929), 190 states have call predecessors, (929), 190 states have return successors, (929), 919 states have call predecessors, (929), 929 states have call successors, (929) [2021-11-21 01:33:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 4241 transitions. [2021-11-21 01:33:05,915 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 4241 transitions. Word has length 252 [2021-11-21 01:33:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:05,917 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 4241 transitions. [2021-11-21 01:33:05,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-11-21 01:33:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 4241 transitions. [2021-11-21 01:33:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-21 01:33:05,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:05,930 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 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] [2021-11-21 01:33:05,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:33:05,931 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1076459234, now seen corresponding path program 1 times [2021-11-21 01:33:05,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:05,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355356759] [2021-11-21 01:33:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:05,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2021-11-21 01:33:06,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355356759] [2021-11-21 01:33:06,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355356759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:06,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:06,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:06,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307184230] [2021-11-21 01:33:06,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:06,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:06,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:06,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:06,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:06,301 INFO L87 Difference]: Start difference. First operand 2939 states and 4241 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 01:33:10,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:11,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:11,596 INFO L93 Difference]: Finished difference Result 6862 states and 9882 transitions. [2021-11-21 01:33:11,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:11,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 255 [2021-11-21 01:33:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:11,629 INFO L225 Difference]: With dead ends: 6862 [2021-11-21 01:33:11,630 INFO L226 Difference]: Without dead ends: 3962 [2021-11-21 01:33:11,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:11,644 INFO L933 BasicCegarLoop]: 1413 mSDtfsCounter, 757 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:11,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 2651 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-21 01:33:11,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-11-21 01:33:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3958. [2021-11-21 01:33:11,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 2465 states have (on average 1.3087221095334685) internal successors, (3226), 2499 states have internal predecessors, (3226), 1233 states have call successors, (1233), 259 states have call predecessors, (1233), 259 states have return successors, (1233), 1219 states have call predecessors, (1233), 1233 states have call successors, (1233) [2021-11-21 01:33:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5692 transitions. [2021-11-21 01:33:11,945 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5692 transitions. Word has length 255 [2021-11-21 01:33:11,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:11,946 INFO L470 AbstractCegarLoop]: Abstraction has 3958 states and 5692 transitions. [2021-11-21 01:33:11,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 01:33:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5692 transitions. [2021-11-21 01:33:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-21 01:33:11,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:11,958 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:11,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:33:11,958 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash -594116935, now seen corresponding path program 1 times [2021-11-21 01:33:11,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:11,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496910473] [2021-11-21 01:33:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:11,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2021-11-21 01:33:12,271 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:12,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496910473] [2021-11-21 01:33:12,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496910473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:12,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:12,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:12,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606183179] [2021-11-21 01:33:12,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:12,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:12,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:12,275 INFO L87 Difference]: Start difference. First operand 3958 states and 5692 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-21 01:33:14,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:18,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:18,288 INFO L93 Difference]: Finished difference Result 11502 states and 16492 transitions. [2021-11-21 01:33:18,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:18,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 259 [2021-11-21 01:33:18,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:18,348 INFO L225 Difference]: With dead ends: 11502 [2021-11-21 01:33:18,349 INFO L226 Difference]: Without dead ends: 7583 [2021-11-21 01:33:18,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:18,370 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1305 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:18,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 2873 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-21 01:33:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2021-11-21 01:33:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7575. [2021-11-21 01:33:18,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 4705 states have (on average 1.3005313496280553) internal successors, (6119), 4779 states have internal predecessors, (6119), 2351 states have call successors, (2351), 518 states have call predecessors, (2351), 518 states have return successors, (2351), 2317 states have call predecessors, (2351), 2351 states have call successors, (2351) [2021-11-21 01:33:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 10821 transitions. [2021-11-21 01:33:18,818 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 10821 transitions. Word has length 259 [2021-11-21 01:33:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:18,894 INFO L470 AbstractCegarLoop]: Abstraction has 7575 states and 10821 transitions. [2021-11-21 01:33:18,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-11-21 01:33:18,895 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 10821 transitions. [2021-11-21 01:33:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-21 01:33:18,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:18,909 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:18,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:33:18,910 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:18,910 INFO L85 PathProgramCache]: Analyzing trace with hash -111577827, now seen corresponding path program 1 times [2021-11-21 01:33:18,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:18,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137996350] [2021-11-21 01:33:18,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:18,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2021-11-21 01:33:19,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:19,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137996350] [2021-11-21 01:33:19,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137996350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:19,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:19,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:19,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254144269] [2021-11-21 01:33:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:19,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:19,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:19,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:19,168 INFO L87 Difference]: Start difference. First operand 7575 states and 10821 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-21 01:33:22,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:24,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:24,804 INFO L93 Difference]: Finished difference Result 15621 states and 22224 transitions. [2021-11-21 01:33:24,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:24,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (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 268 [2021-11-21 01:33:24,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:24,868 INFO L225 Difference]: With dead ends: 15621 [2021-11-21 01:33:24,868 INFO L226 Difference]: Without dead ends: 8085 [2021-11-21 01:33:24,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:24,896 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 573 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:24,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 2575 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-21 01:33:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2021-11-21 01:33:25,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 8083. [2021-11-21 01:33:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8083 states, 5021 states have (on average 1.2949611631149174) internal successors, (6502), 5096 states have internal predecessors, (6502), 2476 states have call successors, (2476), 585 states have call predecessors, (2476), 585 states have return successors, (2476), 2442 states have call predecessors, (2476), 2476 states have call successors, (2476) [2021-11-21 01:33:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8083 states to 8083 states and 11454 transitions. [2021-11-21 01:33:25,413 INFO L78 Accepts]: Start accepts. Automaton has 8083 states and 11454 transitions. Word has length 268 [2021-11-21 01:33:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:25,414 INFO L470 AbstractCegarLoop]: Abstraction has 8083 states and 11454 transitions. [2021-11-21 01:33:25,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-21 01:33:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 8083 states and 11454 transitions. [2021-11-21 01:33:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-21 01:33:25,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:25,428 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:25,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:33:25,429 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:25,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1938418600, now seen corresponding path program 1 times [2021-11-21 01:33:25,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:25,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780775200] [2021-11-21 01:33:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:25,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-21 01:33:25,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:25,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780775200] [2021-11-21 01:33:25,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780775200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:25,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:25,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:25,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657495798] [2021-11-21 01:33:25,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:25,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:25,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:25,699 INFO L87 Difference]: Start difference. First operand 8083 states and 11454 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:33:28,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:31,347 INFO L93 Difference]: Finished difference Result 22913 states and 32345 transitions. [2021-11-21 01:33:31,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 280 [2021-11-21 01:33:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:31,435 INFO L225 Difference]: With dead ends: 22913 [2021-11-21 01:33:31,435 INFO L226 Difference]: Without dead ends: 14869 [2021-11-21 01:33:31,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:31,469 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 1274 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:31,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 2741 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 01:33:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14869 states. [2021-11-21 01:33:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 14843. [2021-11-21 01:33:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14843 states, 9286 states have (on average 1.2893603273745424) internal successors, (11973), 9459 states have internal predecessors, (11973), 4417 states have call successors, (4417), 1139 states have call predecessors, (4417), 1139 states have return successors, (4417), 4325 states have call predecessors, (4417), 4417 states have call successors, (4417) [2021-11-21 01:33:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14843 states to 14843 states and 20807 transitions. [2021-11-21 01:33:32,301 INFO L78 Accepts]: Start accepts. Automaton has 14843 states and 20807 transitions. Word has length 280 [2021-11-21 01:33:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:32,302 INFO L470 AbstractCegarLoop]: Abstraction has 14843 states and 20807 transitions. [2021-11-21 01:33:32,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 01:33:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 14843 states and 20807 transitions. [2021-11-21 01:33:32,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-11-21 01:33:32,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:32,314 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2021-11-21 01:33:32,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:33:32,315 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash 240678243, now seen corresponding path program 1 times [2021-11-21 01:33:32,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:32,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47168054] [2021-11-21 01:33:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:32,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-21 01:33:32,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:32,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47168054] [2021-11-21 01:33:32,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47168054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:32,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:32,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:32,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034194673] [2021-11-21 01:33:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:32,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:32,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:32,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:32,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:32,547 INFO L87 Difference]: Start difference. First operand 14843 states and 20807 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 01:33:36,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:38,991 INFO L93 Difference]: Finished difference Result 41049 states and 57378 transitions. [2021-11-21 01:33:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:38,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 289 [2021-11-21 01:33:38,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:39,113 INFO L225 Difference]: With dead ends: 41049 [2021-11-21 01:33:39,114 INFO L226 Difference]: Without dead ends: 26245 [2021-11-21 01:33:39,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:39,164 INFO L933 BasicCegarLoop]: 1640 mSDtfsCounter, 1256 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:39,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 2858 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 502 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 01:33:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26245 states. [2021-11-21 01:33:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26245 to 26219. [2021-11-21 01:33:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26219 states, 16555 states have (on average 1.2806402899426155) internal successors, (21201), 16911 states have internal predecessors, (21201), 7589 states have call successors, (7589), 2074 states have call predecessors, (7589), 2074 states have return successors, (7589), 7381 states have call predecessors, (7589), 7589 states have call successors, (7589) [2021-11-21 01:33:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26219 states to 26219 states and 36379 transitions. [2021-11-21 01:33:40,538 INFO L78 Accepts]: Start accepts. Automaton has 26219 states and 36379 transitions. Word has length 289 [2021-11-21 01:33:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:40,540 INFO L470 AbstractCegarLoop]: Abstraction has 26219 states and 36379 transitions. [2021-11-21 01:33:40,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 01:33:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 26219 states and 36379 transitions. [2021-11-21 01:33:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-21 01:33:40,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:40,575 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 3, 3, 3, 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] [2021-11-21 01:33:40,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:33:40,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1036113000, now seen corresponding path program 1 times [2021-11-21 01:33:40,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:40,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392665666] [2021-11-21 01:33:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:40,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2021-11-21 01:33:40,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:40,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392665666] [2021-11-21 01:33:40,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392665666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:40,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:40,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:40,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732017652] [2021-11-21 01:33:40,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:40,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:40,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:40,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:40,855 INFO L87 Difference]: Start difference. First operand 26219 states and 36379 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:33:44,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:47,616 INFO L93 Difference]: Finished difference Result 71497 states and 98857 transitions. [2021-11-21 01:33:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:33:47,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 304 [2021-11-21 01:33:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:47,825 INFO L225 Difference]: With dead ends: 71497 [2021-11-21 01:33:47,825 INFO L226 Difference]: Without dead ends: 45411 [2021-11-21 01:33:47,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:47,892 INFO L933 BasicCegarLoop]: 1420 mSDtfsCounter, 1427 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:47,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 2082 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 378 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 01:33:47,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45411 states. [2021-11-21 01:33:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45411 to 39007. [2021-11-21 01:33:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39007 states, 24677 states have (on average 1.2810714430441301) internal successors, (31613), 25201 states have internal predecessors, (31613), 11148 states have call successors, (11148), 3181 states have call predecessors, (11148), 3181 states have return successors, (11148), 10796 states have call predecessors, (11148), 11148 states have call successors, (11148) [2021-11-21 01:33:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39007 states to 39007 states and 53909 transitions. [2021-11-21 01:33:50,343 INFO L78 Accepts]: Start accepts. Automaton has 39007 states and 53909 transitions. Word has length 304 [2021-11-21 01:33:50,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:50,344 INFO L470 AbstractCegarLoop]: Abstraction has 39007 states and 53909 transitions. [2021-11-21 01:33:50,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:33:50,344 INFO L276 IsEmpty]: Start isEmpty. Operand 39007 states and 53909 transitions. [2021-11-21 01:33:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-21 01:33:50,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:50,378 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 3, 3, 3, 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] [2021-11-21 01:33:50,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:33:50,378 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:33:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:50,379 INFO L85 PathProgramCache]: Analyzing trace with hash 350643325, now seen corresponding path program 1 times [2021-11-21 01:33:50,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:33:50,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681100384] [2021-11-21 01:33:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:50,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:33:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2021-11-21 01:33:50,647 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:33:50,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681100384] [2021-11-21 01:33:50,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681100384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:33:50,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:33:50,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:33:50,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145576713] [2021-11-21 01:33:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:33:50,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:33:50,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:33:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:33:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:33:50,651 INFO L87 Difference]: Start difference. First operand 39007 states and 53909 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:33:52,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:33:57,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:00,009 INFO L93 Difference]: Finished difference Result 84648 states and 116868 transitions. [2021-11-21 01:34:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:00,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 308 [2021-11-21 01:34:00,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:00,366 INFO L225 Difference]: With dead ends: 84648 [2021-11-21 01:34:00,367 INFO L226 Difference]: Without dead ends: 45774 [2021-11-21 01:34:00,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:00,457 INFO L933 BasicCegarLoop]: 1888 mSDtfsCounter, 1185 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:00,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 2750 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 546 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-21 01:34:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45774 states. [2021-11-21 01:34:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45774 to 45740. [2021-11-21 01:34:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45740 states, 28944 states have (on average 1.2783996683250414) internal successors, (37002), 29560 states have internal predecessors, (37002), 12973 states have call successors, (12973), 3822 states have call predecessors, (12973), 3822 states have return successors, (12973), 12541 states have call predecessors, (12973), 12973 states have call successors, (12973) [2021-11-21 01:34:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45740 states to 45740 states and 62948 transitions. [2021-11-21 01:34:02,696 INFO L78 Accepts]: Start accepts. Automaton has 45740 states and 62948 transitions. Word has length 308 [2021-11-21 01:34:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:02,697 INFO L470 AbstractCegarLoop]: Abstraction has 45740 states and 62948 transitions. [2021-11-21 01:34:02,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 01:34:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 45740 states and 62948 transitions. [2021-11-21 01:34:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-21 01:34:02,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:02,735 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 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] [2021-11-21 01:34:02,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:34:02,736 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 320333641, now seen corresponding path program 1 times [2021-11-21 01:34:02,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:02,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783288780] [2021-11-21 01:34:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:02,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2021-11-21 01:34:02,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:02,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783288780] [2021-11-21 01:34:02,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783288780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:02,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:02,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:02,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813779692] [2021-11-21 01:34:02,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:02,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:02,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:02,989 INFO L87 Difference]: Start difference. First operand 45740 states and 62948 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:34:05,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:09,773 INFO L93 Difference]: Finished difference Result 112626 states and 155024 transitions. [2021-11-21 01:34:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 312 [2021-11-21 01:34:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:10,185 INFO L225 Difference]: With dead ends: 112626 [2021-11-21 01:34:10,185 INFO L226 Difference]: Without dead ends: 67019 [2021-11-21 01:34:10,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:10,299 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 1308 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:10,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 3337 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 01:34:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67019 states. [2021-11-21 01:34:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67019 to 66969. [2021-11-21 01:34:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66969 states, 42341 states have (on average 1.2773198554592475) internal successors, (54083), 43289 states have internal predecessors, (54083), 18959 states have call successors, (18959), 5668 states have call predecessors, (18959), 5668 states have return successors, (18959), 18287 states have call predecessors, (18959), 18959 states have call successors, (18959) [2021-11-21 01:34:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66969 states to 66969 states and 92001 transitions. [2021-11-21 01:34:13,203 INFO L78 Accepts]: Start accepts. Automaton has 66969 states and 92001 transitions. Word has length 312 [2021-11-21 01:34:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:13,204 INFO L470 AbstractCegarLoop]: Abstraction has 66969 states and 92001 transitions. [2021-11-21 01:34:13,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:34:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 66969 states and 92001 transitions. [2021-11-21 01:34:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-21 01:34:13,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:13,253 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 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] [2021-11-21 01:34:13,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:34:13,254 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:13,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:13,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1041429748, now seen corresponding path program 1 times [2021-11-21 01:34:13,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:13,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972825570] [2021-11-21 01:34:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:13,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2021-11-21 01:34:13,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:13,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972825570] [2021-11-21 01:34:13,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972825570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:13,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:13,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:13,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375908534] [2021-11-21 01:34:13,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:13,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:13,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:13,837 INFO L87 Difference]: Start difference. First operand 66969 states and 92001 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:34:16,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:22,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:22,505 INFO L93 Difference]: Finished difference Result 164881 states and 226387 transitions. [2021-11-21 01:34:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 319 [2021-11-21 01:34:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:22,946 INFO L225 Difference]: With dead ends: 164881 [2021-11-21 01:34:22,946 INFO L226 Difference]: Without dead ends: 98045 [2021-11-21 01:34:23,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:23,133 INFO L933 BasicCegarLoop]: 2295 mSDtfsCounter, 1305 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:23,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 3519 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 645 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 01:34:23,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98045 states. [2021-11-21 01:34:26,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98045 to 97995. [2021-11-21 01:34:26,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97995 states, 61833 states have (on average 1.2733815276632219) internal successors, (78737), 63279 states have internal predecessors, (78737), 27739 states have call successors, (27739), 8422 states have call predecessors, (27739), 8422 states have return successors, (27739), 26707 states have call predecessors, (27739), 27739 states have call successors, (27739) [2021-11-21 01:34:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97995 states to 97995 states and 134215 transitions. [2021-11-21 01:34:27,433 INFO L78 Accepts]: Start accepts. Automaton has 97995 states and 134215 transitions. Word has length 319 [2021-11-21 01:34:27,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:27,434 INFO L470 AbstractCegarLoop]: Abstraction has 97995 states and 134215 transitions. [2021-11-21 01:34:27,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-21 01:34:27,434 INFO L276 IsEmpty]: Start isEmpty. Operand 97995 states and 134215 transitions. [2021-11-21 01:34:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-21 01:34:27,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:27,482 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:27,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:34:27,483 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash -139400590, now seen corresponding path program 1 times [2021-11-21 01:34:27,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:27,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639433495] [2021-11-21 01:34:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:27,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2021-11-21 01:34:27,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:27,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639433495] [2021-11-21 01:34:27,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639433495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:27,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:27,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:34:27,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143555394] [2021-11-21 01:34:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:27,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:34:27,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:27,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:34:27,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:34:27,745 INFO L87 Difference]: Start difference. First operand 97995 states and 134215 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 01:34:31,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:32,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:42,834 INFO L93 Difference]: Finished difference Result 228109 states and 312159 transitions. [2021-11-21 01:34:42,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:34:42,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 329 [2021-11-21 01:34:42,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:43,636 INFO L225 Difference]: With dead ends: 228109 [2021-11-21 01:34:43,636 INFO L226 Difference]: Without dead ends: 130247 [2021-11-21 01:34:43,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:34:43,825 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1337 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:43,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 4090 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2021-11-21 01:34:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130247 states. [2021-11-21 01:34:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130247 to 130197. [2021-11-21 01:34:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130197 states, 82069 states have (on average 1.271210810415626) internal successors, (104327), 84013 states have internal predecessors, (104327), 36687 states have call successors, (36687), 11440 states have call predecessors, (36687), 11440 states have return successors, (36687), 35295 states have call predecessors, (36687), 36687 states have call successors, (36687) [2021-11-21 01:34:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130197 states to 130197 states and 177701 transitions. [2021-11-21 01:34:49,381 INFO L78 Accepts]: Start accepts. Automaton has 130197 states and 177701 transitions. Word has length 329 [2021-11-21 01:34:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:49,382 INFO L470 AbstractCegarLoop]: Abstraction has 130197 states and 177701 transitions. [2021-11-21 01:34:49,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 01:34:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 130197 states and 177701 transitions. [2021-11-21 01:34:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-11-21 01:34:49,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:49,418 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:49,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:34:49,418 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:49,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:49,419 INFO L85 PathProgramCache]: Analyzing trace with hash 256497189, now seen corresponding path program 1 times [2021-11-21 01:34:49,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:49,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163568227] [2021-11-21 01:34:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:49,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2021-11-21 01:34:49,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:49,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163568227] [2021-11-21 01:34:49,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163568227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:49,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:49,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:49,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688576029] [2021-11-21 01:34:49,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:49,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:49,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:49,634 INFO L87 Difference]: Start difference. First operand 130197 states and 177701 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40)