./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW --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 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:47:45,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:47:45,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:47:45,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:47:45,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:47:45,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:47:45,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:47:46,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:47:46,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:47:46,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:47:46,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:47:46,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:47:46,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:47:46,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:47:46,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:47:46,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:47:46,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:47:46,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:47:46,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:47:46,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:47:46,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:47:46,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:47:46,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:47:46,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:47:46,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:47:46,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:47:46,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:47:46,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:47:46,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:47:46,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:47:46,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:47:46,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:47:46,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:47:46,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:47:46,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:47:46,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:47:46,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:47:46,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:47:46,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:47:46,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:47:46,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:47:46,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:47:46,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:47:46,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:47:46,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:47:46,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:47:46,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:47:46,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:47:46,078 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:47:46,078 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:47:46,079 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:47:46,079 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:47:46,079 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:47:46,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:47:46,080 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:47:46,080 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:47:46,080 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:47:46,081 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:47:46,081 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:47:46,081 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:47:46,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:47:46,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:47:46,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:47:46,083 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:47:46,083 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:47:46,083 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:47:46,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:47:46,084 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:47:46,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:47:46,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:47:46,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:47:46,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:47:46,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:47:46,086 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:47:46,086 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:47:46,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:47:46,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:47:46,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:47:46,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:47:46,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:47:46,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 104510927d9409ade9caf80490257750edc55f0d04f472d0e2cf5426e55ff4e4 [2022-11-23 15:47:46,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:47:46,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:47:46,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:47:46,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:47:46,533 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:47:46,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2022-11-23 15:47:49,694 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:47:50,268 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:47:50,269 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2022-11-23 15:47:50,348 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/data/36f834ccd/4025f43760a741c49ba3021fc05c04f3/FLAG5649d64e4 [2022-11-23 15:47:50,363 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/data/36f834ccd/4025f43760a741c49ba3021fc05c04f3 [2022-11-23 15:47:50,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:47:50,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:47:50,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:47:50,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:47:50,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:47:50,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:47:50" (1/1) ... [2022-11-23 15:47:50,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743bae21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:50, skipping insertion in model container [2022-11-23 15:47:50,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:47:50" (1/1) ... [2022-11-23 15:47:50,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:47:50,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:47:53,590 WARN L237 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_d412b37f-7414-433b-b740-dec33bddd719/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2022-11-23 15:47:53,594 WARN L237 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_d412b37f-7414-433b-b740-dec33bddd719/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2022-11-23 15:47:53,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:47:53,663 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:47:54,152 WARN L237 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_d412b37f-7414-433b-b740-dec33bddd719/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307491,307504] [2022-11-23 15:47:54,152 WARN L237 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_d412b37f-7414-433b-b740-dec33bddd719/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i[307636,307649] [2022-11-23 15:47:54,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:47:54,345 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:47:54,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54 WrapperNode [2022-11-23 15:47:54,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:47:54,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:47:54,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:47:54,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:47:54,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,602 INFO L138 Inliner]: procedures = 391, calls = 2618, calls flagged for inlining = 190, calls inlined = 155, statements flattened = 4311 [2022-11-23 15:47:54,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:47:54,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:47:54,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:47:54,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:47:54,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,826 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:47:54,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:47:54,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:47:54,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:47:54,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (1/1) ... [2022-11-23 15:47:54,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:47:54,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:54,914 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:47:54,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:47:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_95 [2022-11-23 15:47:55,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_95 [2022-11-23 15:47:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:47:55,028 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:47:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:47:55,028 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:47:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:47:55,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:47:55,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_91 [2022-11-23 15:47:55,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_91 [2022-11-23 15:47:55,030 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_open [2022-11-23 15:47:55,030 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_open [2022-11-23 15:47:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 15:47:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-23 15:47:55,031 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-23 15:47:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_resume [2022-11-23 15:47:55,031 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_resume [2022-11-23 15:47:55,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 15:47:55,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 15:47:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:47:55,032 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:47:55,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 15:47:55,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 15:47:55,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:47:55,034 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:47:55,034 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:47:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:47:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_device_lock_of_kaweth_device [2022-11-23 15:47:55,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_device_lock_of_kaweth_device [2022-11-23 15:47:55,035 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_resubmit_rx_urb [2022-11-23 15:47:55,035 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_resubmit_rx_urb [2022-11-23 15:47:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:47:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 15:47:55,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 15:47:55,036 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2022-11-23 15:47:55,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2022-11-23 15:47:55,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:47:55,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-23 15:47:55,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-23 15:47:55,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:47:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:47:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 15:47:55,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 15:47:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-23 15:47:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-23 15:47:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 15:47:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 15:47:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_close [2022-11-23 15:47:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_close [2022-11-23 15:47:55,040 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_download_firmware [2022-11-23 15:47:55,040 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_download_firmware [2022-11-23 15:47:55,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:47:55,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 15:47:55,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 15:47:55,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:47:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:47:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:47:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:47:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:47:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:47:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 15:47:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-23 15:47:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-23 15:47:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-23 15:47:55,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-23 15:47:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-23 15:47:55,044 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-23 15:47:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 15:47:55,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 15:47:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 15:47:55,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 15:47:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-23 15:47:55,047 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-23 15:47:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 15:47:55,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 15:47:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_tx_timeout [2022-11-23 15:47:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_tx_timeout [2022-11-23 15:47:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:47:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:47:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_kaweth_driver_exit_11_2 [2022-11-23 15:47:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_kaweth_driver_exit_11_2 [2022-11-23 15:47:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-23 15:47:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-23 15:47:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:47:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:47:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:47:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:47:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-23 15:47:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-23 15:47:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_async_set_rx_mode [2022-11-23 15:47:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_async_set_rx_mode [2022-11-23 15:47:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:47:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:47:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-23 15:47:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-23 15:47:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:47:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:47:55,054 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:47:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:47:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:47:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:47:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:47:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-23 15:47:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-23 15:47:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 15:47:55,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 15:47:55,056 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-23 15:47:55,057 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-23 15:47:55,058 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-23 15:47:55,061 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-23 15:47:55,062 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 15:47:55,062 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 15:47:55,063 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 15:47:55,063 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 15:47:55,064 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_set_rx_mode [2022-11-23 15:47:55,065 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_set_rx_mode [2022-11-23 15:47:55,066 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-23 15:47:55,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-23 15:47:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:47:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:47:55,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:47:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_resubmit_int_urb [2022-11-23 15:47:55,071 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_resubmit_int_urb [2022-11-23 15:47:55,071 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_control [2022-11-23 15:47:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_control [2022-11-23 15:47:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 15:47:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 15:47:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_device_lock_of_kaweth_device [2022-11-23 15:47:55,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_device_lock_of_kaweth_device [2022-11-23 15:47:55,072 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-23 15:47:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_kill_urbs [2022-11-23 15:47:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_kill_urbs [2022-11-23 15:47:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2022-11-23 15:47:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2022-11-23 15:47:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure kaweth_disconnect [2022-11-23 15:47:55,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kaweth_disconnect [2022-11-23 15:47:55,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:47:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 15:47:55,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 15:47:55,074 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-23 15:47:55,074 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-23 15:47:55,778 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:47:55,781 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:47:56,062 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:48:02,619 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 15:48:02,713 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:48:03,521 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:48:03,522 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:48:03,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:03 BoogieIcfgContainer [2022-11-23 15:48:03,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:48:03,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:48:03,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:48:03,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:48:03,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:47:50" (1/3) ... [2022-11-23 15:48:03,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f76293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:03, skipping insertion in model container [2022-11-23 15:48:03,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:54" (2/3) ... [2022-11-23 15:48:03,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f76293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:03, skipping insertion in model container [2022-11-23 15:48:03,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:03" (3/3) ... [2022-11-23 15:48:03,540 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-usb-kaweth.cil.i [2022-11-23 15:48:03,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:48:03,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:48:03,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:48:03,661 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e072439, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:48:03,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:48:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 783 states, 442 states have (on average 1.257918552036199) internal successors, (556), 447 states have internal predecessors, (556), 280 states have call successors, (280), 61 states have call predecessors, (280), 60 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) [2022-11-23 15:48:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-23 15:48:03,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:03,705 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:48:03,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:03,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:03,711 INFO L85 PathProgramCache]: Analyzing trace with hash 978019789, now seen corresponding path program 1 times [2022-11-23 15:48:03,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:03,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370801084] [2022-11-23 15:48:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 15:48:04,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:04,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370801084] [2022-11-23 15:48:04,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370801084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:04,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:04,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:48:04,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001168594] [2022-11-23 15:48:04,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:48:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:05,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:48:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:05,025 INFO L87 Difference]: Start difference. First operand has 783 states, 442 states have (on average 1.257918552036199) internal successors, (556), 447 states have internal predecessors, (556), 280 states have call successors, (280), 61 states have call predecessors, (280), 60 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 15:48:07,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:09,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:11,029 INFO L93 Difference]: Finished difference Result 1878 states and 2703 transitions. [2022-11-23 15:48:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:48:11,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 132 [2022-11-23 15:48:11,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:11,057 INFO L225 Difference]: With dead ends: 1878 [2022-11-23 15:48:11,060 INFO L226 Difference]: Without dead ends: 1050 [2022-11-23 15:48:11,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:11,074 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 449 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:11,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1920 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 405 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 15:48:11,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-11-23 15:48:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1046. [2022-11-23 15:48:11,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 621 states have (on average 1.2560386473429952) internal successors, (780), 629 states have internal predecessors, (780), 333 states have call successors, (333), 91 states have call predecessors, (333), 91 states have return successors, (333), 330 states have call predecessors, (333), 333 states have call successors, (333) [2022-11-23 15:48:11,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1446 transitions. [2022-11-23 15:48:11,226 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1446 transitions. Word has length 132 [2022-11-23 15:48:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:11,228 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1446 transitions. [2022-11-23 15:48:11,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 15:48:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1446 transitions. [2022-11-23 15:48:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-23 15:48:11,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:11,246 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 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] [2022-11-23 15:48:11,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:48:11,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:11,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:11,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1626030427, now seen corresponding path program 1 times [2022-11-23 15:48:11,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:11,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050481349] [2022-11-23 15:48:11,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:11,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-11-23 15:48:11,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:11,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050481349] [2022-11-23 15:48:11,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050481349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:11,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:11,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:48:11,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632631581] [2022-11-23 15:48:11,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:11,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:48:11,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:11,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:48:11,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:11,879 INFO L87 Difference]: Start difference. First operand 1046 states and 1446 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 15:48:13,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:16,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:17,230 INFO L93 Difference]: Finished difference Result 2771 states and 3838 transitions. [2022-11-23 15:48:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:48:17,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 144 [2022-11-23 15:48:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:17,247 INFO L225 Difference]: With dead ends: 2771 [2022-11-23 15:48:17,247 INFO L226 Difference]: Without dead ends: 1742 [2022-11-23 15:48:17,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:17,254 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 865 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:17,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1901 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-23 15:48:17,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-11-23 15:48:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1738. [2022-11-23 15:48:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1034 states have (on average 1.2446808510638299) internal successors, (1287), 1047 states have internal predecessors, (1287), 557 states have call successors, (557), 146 states have call predecessors, (557), 146 states have return successors, (560), 549 states have call predecessors, (560), 557 states have call successors, (560) [2022-11-23 15:48:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2404 transitions. [2022-11-23 15:48:17,422 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2404 transitions. Word has length 144 [2022-11-23 15:48:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:17,423 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2404 transitions. [2022-11-23 15:48:17,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 15:48:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2404 transitions. [2022-11-23 15:48:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-23 15:48:17,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:17,428 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 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] [2022-11-23 15:48:17,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:48:17,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash -44903993, now seen corresponding path program 1 times [2022-11-23 15:48:17,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:17,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786108838] [2022-11-23 15:48:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-23 15:48:17,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:17,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786108838] [2022-11-23 15:48:17,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786108838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:17,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:17,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:48:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102444561] [2022-11-23 15:48:17,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:17,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:48:17,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:48:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:17,962 INFO L87 Difference]: Start difference. First operand 1738 states and 2404 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 15:48:20,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:22,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:24,480 INFO L93 Difference]: Finished difference Result 3837 states and 5284 transitions. [2022-11-23 15:48:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:48:24,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2022-11-23 15:48:24,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:24,497 INFO L225 Difference]: With dead ends: 3837 [2022-11-23 15:48:24,497 INFO L226 Difference]: Without dead ends: 2116 [2022-11-23 15:48:24,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:24,508 INFO L413 NwaCegarLoop]: 1104 mSDtfsCounter, 387 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:24,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1963 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 15:48:24,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2022-11-23 15:48:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2112. [2022-11-23 15:48:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1279 states have (on average 1.2470680218921033) internal successors, (1595), 1296 states have internal predecessors, (1595), 650 states have call successors, (650), 182 states have call predecessors, (650), 182 states have return successors, (653), 640 states have call predecessors, (653), 650 states have call successors, (653) [2022-11-23 15:48:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2898 transitions. [2022-11-23 15:48:24,669 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2898 transitions. Word has length 150 [2022-11-23 15:48:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:24,670 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 2898 transitions. [2022-11-23 15:48:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-23 15:48:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2898 transitions. [2022-11-23 15:48:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-23 15:48:24,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:24,676 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:48:24,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:48:24,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:24,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:24,678 INFO L85 PathProgramCache]: Analyzing trace with hash -791114974, now seen corresponding path program 1 times [2022-11-23 15:48:24,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:24,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65851930] [2022-11-23 15:48:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:24,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-23 15:48:25,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:25,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65851930] [2022-11-23 15:48:25,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65851930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:25,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:25,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:48:25,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502916297] [2022-11-23 15:48:25,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:25,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:48:25,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:48:25,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:25,205 INFO L87 Difference]: Start difference. First operand 2112 states and 2898 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 15:48:27,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:29,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:31,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:32,114 INFO L93 Difference]: Finished difference Result 4796 states and 6545 transitions. [2022-11-23 15:48:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:48:32,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 197 [2022-11-23 15:48:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:32,132 INFO L225 Difference]: With dead ends: 4796 [2022-11-23 15:48:32,132 INFO L226 Difference]: Without dead ends: 2701 [2022-11-23 15:48:32,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:32,143 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 760 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:32,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1757 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 436 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 15:48:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-11-23 15:48:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2693. [2022-11-23 15:48:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 1637 states have (on average 1.2449602932193036) internal successors, (2038), 1662 states have internal predecessors, (2038), 801 states have call successors, (801), 254 states have call predecessors, (801), 254 states have return successors, (806), 785 states have call predecessors, (806), 801 states have call successors, (806) [2022-11-23 15:48:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3645 transitions. [2022-11-23 15:48:32,304 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3645 transitions. Word has length 197 [2022-11-23 15:48:32,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:32,306 INFO L495 AbstractCegarLoop]: Abstraction has 2693 states and 3645 transitions. [2022-11-23 15:48:32,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-23 15:48:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3645 transitions. [2022-11-23 15:48:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-23 15:48:32,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:32,313 INFO L195 NwaCegarLoop]: trace histogram [15, 12, 12, 9, 9, 9, 9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:48:32,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:48:32,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:32,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:32,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1446880974, now seen corresponding path program 1 times [2022-11-23 15:48:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:32,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977930472] [2022-11-23 15:48:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2022-11-23 15:48:34,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:34,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977930472] [2022-11-23 15:48:34,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977930472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:34,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:34,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:48:34,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117527383] [2022-11-23 15:48:34,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:34,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:48:34,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:48:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:48:34,517 INFO L87 Difference]: Start difference. First operand 2693 states and 3645 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 15:48:38,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:40,921 INFO L93 Difference]: Finished difference Result 6287 states and 8679 transitions. [2022-11-23 15:48:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:48:40,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 282 [2022-11-23 15:48:40,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:40,943 INFO L225 Difference]: With dead ends: 6287 [2022-11-23 15:48:40,944 INFO L226 Difference]: Without dead ends: 3611 [2022-11-23 15:48:40,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:48:40,956 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 347 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 138 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:40,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 2877 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 600 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 15:48:40,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2022-11-23 15:48:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2697. [2022-11-23 15:48:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 1641 states have (on average 1.2443631931748933) internal successors, (2042), 1666 states have internal predecessors, (2042), 801 states have call successors, (801), 254 states have call predecessors, (801), 254 states have return successors, (806), 785 states have call predecessors, (806), 801 states have call successors, (806) [2022-11-23 15:48:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 3649 transitions. [2022-11-23 15:48:41,191 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 3649 transitions. Word has length 282 [2022-11-23 15:48:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:41,192 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 3649 transitions. [2022-11-23 15:48:41,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-23 15:48:41,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 3649 transitions. [2022-11-23 15:48:41,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-23 15:48:41,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:41,199 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 9, 9, 9, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:48:41,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:48:41,200 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1276323869, now seen corresponding path program 1 times [2022-11-23 15:48:41,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:41,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770826297] [2022-11-23 15:48:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-11-23 15:48:42,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:42,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770826297] [2022-11-23 15:48:42,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770826297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:42,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:42,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:48:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280367637] [2022-11-23 15:48:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:42,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:48:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:48:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:48:42,331 INFO L87 Difference]: Start difference. First operand 2697 states and 3649 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 15:48:45,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:47,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:48:49,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:49,378 INFO L93 Difference]: Finished difference Result 5383 states and 7281 transitions. [2022-11-23 15:48:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:48:49,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 299 [2022-11-23 15:48:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:49,397 INFO L225 Difference]: With dead ends: 5383 [2022-11-23 15:48:49,397 INFO L226 Difference]: Without dead ends: 2703 [2022-11-23 15:48:49,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:48:49,409 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:49,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2583 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-23 15:48:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2703 states. [2022-11-23 15:48:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2703 to 2701. [2022-11-23 15:48:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 1645 states have (on average 1.2437689969604864) internal successors, (2046), 1670 states have internal predecessors, (2046), 801 states have call successors, (801), 254 states have call predecessors, (801), 254 states have return successors, (806), 785 states have call predecessors, (806), 801 states have call successors, (806) [2022-11-23 15:48:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3653 transitions. [2022-11-23 15:48:49,575 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3653 transitions. Word has length 299 [2022-11-23 15:48:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:49,576 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3653 transitions. [2022-11-23 15:48:49,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 15:48:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3653 transitions. [2022-11-23 15:48:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-23 15:48:49,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:49,583 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 9, 9, 9, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:48:49,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:48:49,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1645871793, now seen corresponding path program 1 times [2022-11-23 15:48:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:49,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529409153] [2022-11-23 15:48:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-11-23 15:48:50,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:50,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529409153] [2022-11-23 15:48:50,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529409153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:48:50,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707086254] [2022-11-23 15:48:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:50,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:50,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:50,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:48:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:52,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 5452 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 15:48:52,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:49:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-23 15:49:08,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:49:08,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707086254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:08,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:49:08,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2022-11-23 15:49:08,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392241609] [2022-11-23 15:49:08,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:08,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:49:08,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:49:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 15:49:08,417 INFO L87 Difference]: Start difference. First operand 2701 states and 3653 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (38), 1 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-23 15:49:12,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:14,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:15,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:19,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:22,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:22,080 INFO L93 Difference]: Finished difference Result 4927 states and 6712 transitions. [2022-11-23 15:49:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:49:22,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (38), 1 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) Word has length 301 [2022-11-23 15:49:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:22,110 INFO L225 Difference]: With dead ends: 4927 [2022-11-23 15:49:22,111 INFO L226 Difference]: Without dead ends: 4925 [2022-11-23 15:49:22,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 15:49:22,114 INFO L413 NwaCegarLoop]: 1089 mSDtfsCounter, 771 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 4423 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:22,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 4423 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1360 Invalid, 2 Unknown, 0 Unchecked, 13.2s Time] [2022-11-23 15:49:22,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4925 states. [2022-11-23 15:49:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4925 to 4912. [2022-11-23 15:49:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 3013 states have (on average 1.247261865250581) internal successors, (3758), 3069 states have internal predecessors, (3758), 1448 states have call successors, (1448), 457 states have call predecessors, (1448), 450 states have return successors, (1462), 1399 states have call predecessors, (1462), 1448 states have call successors, (1462) [2022-11-23 15:49:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 6668 transitions. [2022-11-23 15:49:22,660 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 6668 transitions. Word has length 301 [2022-11-23 15:49:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:22,661 INFO L495 AbstractCegarLoop]: Abstraction has 4912 states and 6668 transitions. [2022-11-23 15:49:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (38), 1 states have call predecessors, (38), 2 states have return successors, (37), 2 states have call predecessors, (37), 1 states have call successors, (37) [2022-11-23 15:49:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 6668 transitions. [2022-11-23 15:49:22,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-23 15:49:22,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:22,670 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 15, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:22,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:49:22,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 15:49:22,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1072660763, now seen corresponding path program 1 times [2022-11-23 15:49:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:22,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839306431] [2022-11-23 15:49:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-23 15:49:23,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:23,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839306431] [2022-11-23 15:49:23,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839306431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:23,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:23,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:49:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097229206] [2022-11-23 15:49:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:23,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:49:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:49:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:49:23,758 INFO L87 Difference]: Start difference. First operand 4912 states and 6668 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-23 15:49:27,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:29,529 INFO L93 Difference]: Finished difference Result 10454 states and 14197 transitions. [2022-11-23 15:49:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:49:29,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 348 [2022-11-23 15:49:29,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:29,565 INFO L225 Difference]: With dead ends: 10454 [2022-11-23 15:49:29,565 INFO L226 Difference]: Without dead ends: 5559 [2022-11-23 15:49:29,584 INFO L412 NwaCegarLoop]: 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 [2022-11-23 15:49:29,584 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 417 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:29,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 2783 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 881 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 15:49:29,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2022-11-23 15:49:30,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5549. [2022-11-23 15:49:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 3432 states have (on average 1.252039627039627) internal successors, (4297), 3500 states have internal predecessors, (4297), 1601 states have call successors, (1601), 523 states have call predecessors, (1601), 515 states have return successors, (1615), 1542 states have call predecessors, (1615), 1601 states have call successors, (1615) [2022-11-23 15:49:30,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 7513 transitions. [2022-11-23 15:49:30,128 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 7513 transitions. Word has length 348 [2022-11-23 15:49:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:30,129 INFO L495 AbstractCegarLoop]: Abstraction has 5549 states and 7513 transitions. [2022-11-23 15:49:30,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-23 15:49:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 7513 transitions. [2022-11-23 15:49:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-23 15:49:30,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:30,140 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 16, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:30,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:49:30,141 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 383636989, now seen corresponding path program 1 times [2022-11-23 15:49:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:30,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410590627] [2022-11-23 15:49:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:30,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-11-23 15:49:30,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:30,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410590627] [2022-11-23 15:49:30,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410590627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:30,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:30,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:49:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194999380] [2022-11-23 15:49:30,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:30,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:49:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:49:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:49:30,793 INFO L87 Difference]: Start difference. First operand 5549 states and 7513 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:49:34,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:37,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:37,731 INFO L93 Difference]: Finished difference Result 14138 states and 19457 transitions. [2022-11-23 15:49:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:49:37,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 371 [2022-11-23 15:49:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:37,779 INFO L225 Difference]: With dead ends: 14138 [2022-11-23 15:49:37,780 INFO L226 Difference]: Without dead ends: 8606 [2022-11-23 15:49:37,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:49:37,798 INFO L413 NwaCegarLoop]: 1453 mSDtfsCounter, 812 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 86 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:37,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 3833 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 913 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 15:49:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8606 states. [2022-11-23 15:49:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8606 to 6462. [2022-11-23 15:49:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6462 states, 3975 states have (on average 1.2477987421383647) internal successors, (4960), 4057 states have internal predecessors, (4960), 1856 states have call successors, (1856), 639 states have call predecessors, (1856), 630 states have return successors, (1872), 1785 states have call predecessors, (1872), 1856 states have call successors, (1872) [2022-11-23 15:49:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6462 states to 6462 states and 8688 transitions. [2022-11-23 15:49:38,601 INFO L78 Accepts]: Start accepts. Automaton has 6462 states and 8688 transitions. Word has length 371 [2022-11-23 15:49:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:38,602 INFO L495 AbstractCegarLoop]: Abstraction has 6462 states and 8688 transitions. [2022-11-23 15:49:38,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:49:38,604 INFO L276 IsEmpty]: Start isEmpty. Operand 6462 states and 8688 transitions. [2022-11-23 15:49:38,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-11-23 15:49:38,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:38,614 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 16, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:38,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:49:38,615 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2127648026, now seen corresponding path program 1 times [2022-11-23 15:49:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:38,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625827729] [2022-11-23 15:49:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:38,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-11-23 15:49:39,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625827729] [2022-11-23 15:49:39,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625827729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:39,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:39,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:49:39,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768556693] [2022-11-23 15:49:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:39,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:49:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:49:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:49:39,452 INFO L87 Difference]: Start difference. First operand 6462 states and 8688 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:49:43,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:46,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:46,755 INFO L93 Difference]: Finished difference Result 16111 states and 22206 transitions. [2022-11-23 15:49:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:49:46,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 372 [2022-11-23 15:49:46,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:46,807 INFO L225 Difference]: With dead ends: 16111 [2022-11-23 15:49:46,807 INFO L226 Difference]: Without dead ends: 9666 [2022-11-23 15:49:46,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:49:46,834 INFO L413 NwaCegarLoop]: 1461 mSDtfsCounter, 727 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 79 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3864 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:46,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 3864 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 924 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-23 15:49:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9666 states. [2022-11-23 15:49:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9666 to 7055. [2022-11-23 15:49:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7055 states, 4362 states have (on average 1.2524071526822558) internal successors, (5463), 4456 states have internal predecessors, (5463), 2009 states have call successors, (2009), 693 states have call predecessors, (2009), 683 states have return successors, (2025), 1928 states have call predecessors, (2025), 2009 states have call successors, (2025) [2022-11-23 15:49:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7055 states to 7055 states and 9497 transitions. [2022-11-23 15:49:47,752 INFO L78 Accepts]: Start accepts. Automaton has 7055 states and 9497 transitions. Word has length 372 [2022-11-23 15:49:47,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:47,753 INFO L495 AbstractCegarLoop]: Abstraction has 7055 states and 9497 transitions. [2022-11-23 15:49:47,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:49:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7055 states and 9497 transitions. [2022-11-23 15:49:47,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-11-23 15:49:47,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:47,761 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 16, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:47,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:49:47,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:47,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1069772572, now seen corresponding path program 1 times [2022-11-23 15:49:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:47,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60239865] [2022-11-23 15:49:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:47,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-11-23 15:49:48,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:48,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60239865] [2022-11-23 15:49:48,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60239865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:48,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:48,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:49:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775228125] [2022-11-23 15:49:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:48,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:49:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:48,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:49:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:49:48,479 INFO L87 Difference]: Start difference. First operand 7055 states and 9497 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:49:51,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:49:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:49:56,855 INFO L93 Difference]: Finished difference Result 17169 states and 23612 transitions. [2022-11-23 15:49:56,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:49:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 380 [2022-11-23 15:49:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:49:56,904 INFO L225 Difference]: With dead ends: 17169 [2022-11-23 15:49:56,904 INFO L226 Difference]: Without dead ends: 10131 [2022-11-23 15:49:56,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:49:56,929 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 878 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:49:56,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 3891 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 15:49:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10131 states. [2022-11-23 15:49:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10131 to 7664. [2022-11-23 15:49:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7664 states, 4765 states have (on average 1.2554039874081846) internal successors, (5982), 4871 states have internal predecessors, (5982), 2162 states have call successors, (2162), 747 states have call predecessors, (2162), 736 states have return successors, (2178), 2071 states have call predecessors, (2178), 2162 states have call successors, (2178) [2022-11-23 15:49:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7664 states to 7664 states and 10322 transitions. [2022-11-23 15:49:57,855 INFO L78 Accepts]: Start accepts. Automaton has 7664 states and 10322 transitions. Word has length 380 [2022-11-23 15:49:57,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:49:57,857 INFO L495 AbstractCegarLoop]: Abstraction has 7664 states and 10322 transitions. [2022-11-23 15:49:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:49:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 7664 states and 10322 transitions. [2022-11-23 15:49:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-11-23 15:49:57,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:49:57,865 INFO L195 NwaCegarLoop]: trace histogram [19, 16, 16, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:49:57,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:49:57,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:49:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:49:57,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1600007468, now seen corresponding path program 1 times [2022-11-23 15:49:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:49:57,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251999276] [2022-11-23 15:49:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:49:57,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:49:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:49:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-11-23 15:49:58,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:49:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251999276] [2022-11-23 15:49:58,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251999276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:49:58,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:49:58,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:49:58,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413947171] [2022-11-23 15:49:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:49:58,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:49:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:49:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:49:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:49:58,543 INFO L87 Difference]: Start difference. First operand 7664 states and 10322 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:50:02,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:05,555 INFO L93 Difference]: Finished difference Result 18594 states and 25543 transitions. [2022-11-23 15:50:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:50:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 381 [2022-11-23 15:50:05,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:05,598 INFO L225 Difference]: With dead ends: 18594 [2022-11-23 15:50:05,599 INFO L226 Difference]: Without dead ends: 10947 [2022-11-23 15:50:05,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:50:05,620 INFO L413 NwaCegarLoop]: 1464 mSDtfsCounter, 806 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 100 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 3857 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:05,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 3857 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 949 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 15:50:05,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10947 states. [2022-11-23 15:50:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10947 to 8359. [2022-11-23 15:50:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8359 states, 5214 states have (on average 1.2556578442654391) internal successors, (6547), 5332 states have internal predecessors, (6547), 2333 states have call successors, (2333), 824 states have call predecessors, (2333), 811 states have return successors, (2349), 2231 states have call predecessors, (2349), 2333 states have call successors, (2349) [2022-11-23 15:50:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8359 states to 8359 states and 11229 transitions. [2022-11-23 15:50:06,577 INFO L78 Accepts]: Start accepts. Automaton has 8359 states and 11229 transitions. Word has length 381 [2022-11-23 15:50:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:06,579 INFO L495 AbstractCegarLoop]: Abstraction has 8359 states and 11229 transitions. [2022-11-23 15:50:06,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:50:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 8359 states and 11229 transitions. [2022-11-23 15:50:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-23 15:50:06,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:06,590 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 9, 9, 9, 9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:50:06,591 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:06,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2001794823, now seen corresponding path program 1 times [2022-11-23 15:50:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:06,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511547206] [2022-11-23 15:50:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:06,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 1073 trivial. 0 not checked. [2022-11-23 15:50:07,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:07,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511547206] [2022-11-23 15:50:07,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511547206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:07,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:07,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:07,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789795480] [2022-11-23 15:50:07,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:07,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:07,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:07,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:07,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:07,069 INFO L87 Difference]: Start difference. First operand 8359 states and 11229 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:50:10,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:11,720 INFO L93 Difference]: Finished difference Result 17041 states and 22824 transitions. [2022-11-23 15:50:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:11,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 386 [2022-11-23 15:50:11,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:11,760 INFO L225 Difference]: With dead ends: 17041 [2022-11-23 15:50:11,760 INFO L226 Difference]: Without dead ends: 8699 [2022-11-23 15:50:11,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:11,785 INFO L413 NwaCegarLoop]: 1245 mSDtfsCounter, 492 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:11,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 2070 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-23 15:50:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8699 states. [2022-11-23 15:50:12,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8699 to 8675. [2022-11-23 15:50:12,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8675 states, 5399 states have (on average 1.2515280607519912) internal successors, (6757), 5517 states have internal predecessors, (6757), 2411 states have call successors, (2411), 874 states have call predecessors, (2411), 864 states have return successors, (2421), 2314 states have call predecessors, (2421), 2411 states have call successors, (2421) [2022-11-23 15:50:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8675 states to 8675 states and 11589 transitions. [2022-11-23 15:50:12,693 INFO L78 Accepts]: Start accepts. Automaton has 8675 states and 11589 transitions. Word has length 386 [2022-11-23 15:50:12,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:12,694 INFO L495 AbstractCegarLoop]: Abstraction has 8675 states and 11589 transitions. [2022-11-23 15:50:12,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-23 15:50:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8675 states and 11589 transitions. [2022-11-23 15:50:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-23 15:50:12,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:12,705 INFO L195 NwaCegarLoop]: trace histogram [20, 18, 18, 9, 9, 9, 9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:12,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:50:12,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash 660809397, now seen corresponding path program 1 times [2022-11-23 15:50:12,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:12,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661938514] [2022-11-23 15:50:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2022-11-23 15:50:13,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:13,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661938514] [2022-11-23 15:50:13,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661938514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:13,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:13,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:13,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650136047] [2022-11-23 15:50:13,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:13,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:13,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:13,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:13,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:13,293 INFO L87 Difference]: Start difference. First operand 8675 states and 11589 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-23 15:50:16,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:18,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:18,773 INFO L93 Difference]: Finished difference Result 13895 states and 18502 transitions. [2022-11-23 15:50:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:18,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 455 [2022-11-23 15:50:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:18,812 INFO L225 Difference]: With dead ends: 13895 [2022-11-23 15:50:18,813 INFO L226 Difference]: Without dead ends: 8675 [2022-11-23 15:50:18,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:18,830 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 450 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:18,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1910 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-23 15:50:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8675 states. [2022-11-23 15:50:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8675 to 8655. [2022-11-23 15:50:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8655 states, 5384 states have (on average 1.2479569093610698) internal successors, (6719), 5500 states have internal predecessors, (6719), 2394 states have call successors, (2394), 886 states have call predecessors, (2394), 876 states have return successors, (2402), 2299 states have call predecessors, (2402), 2394 states have call successors, (2402) [2022-11-23 15:50:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8655 states to 8655 states and 11515 transitions. [2022-11-23 15:50:19,899 INFO L78 Accepts]: Start accepts. Automaton has 8655 states and 11515 transitions. Word has length 455 [2022-11-23 15:50:19,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:19,900 INFO L495 AbstractCegarLoop]: Abstraction has 8655 states and 11515 transitions. [2022-11-23 15:50:19,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-23 15:50:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand 8655 states and 11515 transitions. [2022-11-23 15:50:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-23 15:50:19,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:19,915 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 9, 9, 9, 9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:50:19,915 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:19,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash 887791844, now seen corresponding path program 1 times [2022-11-23 15:50:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:19,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249392636] [2022-11-23 15:50:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:19,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1422 trivial. 0 not checked. [2022-11-23 15:50:27,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:27,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249392636] [2022-11-23 15:50:27,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249392636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:27,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:27,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:50:27,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007769996] [2022-11-23 15:50:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:27,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:50:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:50:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:50:27,733 INFO L87 Difference]: Start difference. First operand 8655 states and 11515 transitions. Second operand has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (62), 5 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-23 15:50:34,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:36,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:38,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:41,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:41,011 INFO L93 Difference]: Finished difference Result 9022 states and 11936 transitions. [2022-11-23 15:50:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 15:50:41,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (62), 5 states have call predecessors, (62), 3 states have call successors, (62) Word has length 477 [2022-11-23 15:50:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:41,047 INFO L225 Difference]: With dead ends: 9022 [2022-11-23 15:50:41,047 INFO L226 Difference]: Without dead ends: 9020 [2022-11-23 15:50:41,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:50:41,054 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 1144 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:41,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 3191 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1448 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-23 15:50:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2022-11-23 15:50:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 8980. [2022-11-23 15:50:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8980 states, 5562 states have (on average 1.2411003236245954) internal successors, (6903), 5678 states have internal predecessors, (6903), 2444 states have call successors, (2444), 983 states have call predecessors, (2444), 973 states have return successors, (2452), 2349 states have call predecessors, (2452), 2444 states have call successors, (2452) [2022-11-23 15:50:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8980 states to 8980 states and 11799 transitions. [2022-11-23 15:50:42,696 INFO L78 Accepts]: Start accepts. Automaton has 8980 states and 11799 transitions. Word has length 477 [2022-11-23 15:50:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:42,698 INFO L495 AbstractCegarLoop]: Abstraction has 8980 states and 11799 transitions. [2022-11-23 15:50:42,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 3 states have call successors, (64), 3 states have call predecessors, (64), 3 states have return successors, (62), 5 states have call predecessors, (62), 3 states have call successors, (62) [2022-11-23 15:50:42,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8980 states and 11799 transitions. [2022-11-23 15:50:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-11-23 15:50:42,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:42,724 INFO L195 NwaCegarLoop]: trace histogram [24, 22, 21, 21, 14, 14, 14, 14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 15:50:42,724 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:42,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2132542733, now seen corresponding path program 1 times [2022-11-23 15:50:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:42,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306093672] [2022-11-23 15:50:42,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:42,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 2431 trivial. 0 not checked. [2022-11-23 15:50:43,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:43,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306093672] [2022-11-23 15:50:43,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306093672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:43,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:43,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:50:43,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118393722] [2022-11-23 15:50:43,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:43,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:50:43,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:43,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:50:43,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:43,889 INFO L87 Difference]: Start difference. First operand 8980 states and 11799 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-23 15:50:48,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:50,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:54,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:50:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:50:54,462 INFO L93 Difference]: Finished difference Result 21071 states and 27841 transitions. [2022-11-23 15:50:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:50:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 651 [2022-11-23 15:50:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:50:54,502 INFO L225 Difference]: With dead ends: 21071 [2022-11-23 15:50:54,502 INFO L226 Difference]: Without dead ends: 12108 [2022-11-23 15:50:54,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:50:54,526 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 816 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2315 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:50:54,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 2315 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 15:50:54,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12108 states. [2022-11-23 15:50:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12108 to 12102. [2022-11-23 15:50:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12102 states, 7601 states have (on average 1.2465465070385475) internal successors, (9475), 7758 states have internal predecessors, (9475), 3247 states have call successors, (3247), 1264 states have call predecessors, (3247), 1253 states have return successors, (3263), 3110 states have call predecessors, (3263), 3247 states have call successors, (3263) [2022-11-23 15:50:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12102 states to 12102 states and 15985 transitions. [2022-11-23 15:50:56,444 INFO L78 Accepts]: Start accepts. Automaton has 12102 states and 15985 transitions. Word has length 651 [2022-11-23 15:50:56,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:50:56,445 INFO L495 AbstractCegarLoop]: Abstraction has 12102 states and 15985 transitions. [2022-11-23 15:50:56,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 3 states have call successors, (96), 2 states have call predecessors, (96), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-23 15:50:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand 12102 states and 15985 transitions. [2022-11-23 15:50:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2022-11-23 15:50:56,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:50:56,480 INFO L195 NwaCegarLoop]: trace histogram [26, 23, 21, 21, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:50:56,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 15:50:56,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:50:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:50:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1523394399, now seen corresponding path program 1 times [2022-11-23 15:50:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:50:56,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911861261] [2022-11-23 15:50:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:50:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:50:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:50:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2587 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2022-11-23 15:50:58,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:50:58,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911861261] [2022-11-23 15:50:58,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911861261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:50:58,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:50:58,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:50:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332119762] [2022-11-23 15:50:58,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:50:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:50:58,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:50:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:50:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:50:58,055 INFO L87 Difference]: Start difference. First operand 12102 states and 15985 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:51:02,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:04,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:05,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:11,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:12,692 INFO L93 Difference]: Finished difference Result 27106 states and 35795 transitions. [2022-11-23 15:51:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:51:12,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) Word has length 673 [2022-11-23 15:51:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:12,748 INFO L225 Difference]: With dead ends: 27106 [2022-11-23 15:51:12,749 INFO L226 Difference]: Without dead ends: 15021 [2022-11-23 15:51:12,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:12,779 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 803 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 5316 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 5316 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-23 15:51:12,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15021 states. [2022-11-23 15:51:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15021 to 14977. [2022-11-23 15:51:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14977 states, 9412 states have (on average 1.2395877603059924) internal successors, (11667), 9610 states have internal predecessors, (11667), 4031 states have call successors, (4031), 1526 states have call predecessors, (4031), 1533 states have return successors, (4074), 3871 states have call predecessors, (4074), 4031 states have call successors, (4074) [2022-11-23 15:51:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14977 states to 14977 states and 19772 transitions. [2022-11-23 15:51:14,940 INFO L78 Accepts]: Start accepts. Automaton has 14977 states and 19772 transitions. Word has length 673 [2022-11-23 15:51:14,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:14,941 INFO L495 AbstractCegarLoop]: Abstraction has 14977 states and 19772 transitions. [2022-11-23 15:51:14,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 4 states have internal predecessors, (206), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:51:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14977 states and 19772 transitions. [2022-11-23 15:51:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2022-11-23 15:51:14,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:14,971 INFO L195 NwaCegarLoop]: trace histogram [26, 23, 21, 21, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:51:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 15:51:14,971 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:51:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash 117294034, now seen corresponding path program 1 times [2022-11-23 15:51:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:14,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346938114] [2022-11-23 15:51:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:14,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2587 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2022-11-23 15:51:16,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:16,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346938114] [2022-11-23 15:51:16,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346938114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:16,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:16,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:51:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361078762] [2022-11-23 15:51:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:16,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:51:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:51:16,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:16,339 INFO L87 Difference]: Start difference. First operand 14977 states and 19772 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:51:20,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:28,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:30,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:32,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:32,480 INFO L93 Difference]: Finished difference Result 32920 states and 43458 transitions. [2022-11-23 15:51:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:51:32,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) Word has length 674 [2022-11-23 15:51:32,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:32,558 INFO L225 Difference]: With dead ends: 32920 [2022-11-23 15:51:32,558 INFO L226 Difference]: Without dead ends: 17960 [2022-11-23 15:51:32,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:32,603 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 805 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 5329 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:32,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 5329 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1152 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2022-11-23 15:51:32,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17960 states. [2022-11-23 15:51:35,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17960 to 17916. [2022-11-23 15:51:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17916 states, 11274 states have (on average 1.2338123115132162) internal successors, (13910), 11513 states have internal predecessors, (13910), 4815 states have call successors, (4815), 1801 states have call predecessors, (4815), 1826 states have return successors, (4885), 4632 states have call predecessors, (4885), 4815 states have call successors, (4885) [2022-11-23 15:51:35,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17916 states to 17916 states and 23610 transitions. [2022-11-23 15:51:35,264 INFO L78 Accepts]: Start accepts. Automaton has 17916 states and 23610 transitions. Word has length 674 [2022-11-23 15:51:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:35,265 INFO L495 AbstractCegarLoop]: Abstraction has 17916 states and 23610 transitions. [2022-11-23 15:51:35,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:51:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 17916 states and 23610 transitions. [2022-11-23 15:51:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2022-11-23 15:51:35,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:35,283 INFO L195 NwaCegarLoop]: trace histogram [26, 23, 21, 21, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:51:35,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 15:51:35,283 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:51:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -321429145, now seen corresponding path program 1 times [2022-11-23 15:51:35,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:35,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482986743] [2022-11-23 15:51:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:35,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2587 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2022-11-23 15:51:36,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:36,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482986743] [2022-11-23 15:51:36,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482986743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:36,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:36,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:51:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698358528] [2022-11-23 15:51:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:36,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:51:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:36,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:51:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:36,427 INFO L87 Difference]: Start difference. First operand 17916 states and 23610 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:51:40,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:42,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:43,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:50,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:51,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:53,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:51:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:51:53,976 INFO L93 Difference]: Finished difference Result 38829 states and 51235 transitions. [2022-11-23 15:51:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:51:53,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) Word has length 675 [2022-11-23 15:51:53,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:51:54,034 INFO L225 Difference]: With dead ends: 38829 [2022-11-23 15:51:54,034 INFO L226 Difference]: Without dead ends: 20930 [2022-11-23 15:51:54,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:54,069 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 802 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:51:54,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 5328 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1163 Invalid, 1 Unknown, 0 Unchecked, 14.5s Time] [2022-11-23 15:51:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2022-11-23 15:51:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 20886. [2022-11-23 15:51:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20886 states, 13180 states have (on average 1.228907435508346) internal successors, (16197), 13460 states have internal predecessors, (16197), 5599 states have call successors, (5599), 2063 states have call predecessors, (5599), 2106 states have return successors, (5696), 5393 states have call predecessors, (5696), 5599 states have call successors, (5696) [2022-11-23 15:51:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20886 states to 20886 states and 27492 transitions. [2022-11-23 15:51:57,237 INFO L78 Accepts]: Start accepts. Automaton has 20886 states and 27492 transitions. Word has length 675 [2022-11-23 15:51:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:51:57,237 INFO L495 AbstractCegarLoop]: Abstraction has 20886 states and 27492 transitions. [2022-11-23 15:51:57,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:51:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 20886 states and 27492 transitions. [2022-11-23 15:51:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-11-23 15:51:57,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:51:57,260 INFO L195 NwaCegarLoop]: trace histogram [26, 23, 21, 21, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:51:57,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 15:51:57,260 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:51:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:51:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash -702342295, now seen corresponding path program 1 times [2022-11-23 15:51:57,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:51:57,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120801579] [2022-11-23 15:51:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:51:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:51:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:51:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2587 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2558 trivial. 0 not checked. [2022-11-23 15:51:58,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:51:58,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120801579] [2022-11-23 15:51:58,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120801579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:51:58,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:51:58,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:51:58,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480155830] [2022-11-23 15:51:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:51:58,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:51:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:51:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:51:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:51:58,835 INFO L87 Difference]: Start difference. First operand 20886 states and 27492 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:52:05,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:07,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:09,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:16,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:16,753 INFO L93 Difference]: Finished difference Result 44580 states and 58772 transitions. [2022-11-23 15:52:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:52:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) Word has length 676 [2022-11-23 15:52:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:16,849 INFO L225 Difference]: With dead ends: 44580 [2022-11-23 15:52:16,850 INFO L226 Difference]: Without dead ends: 23711 [2022-11-23 15:52:16,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:52:16,903 INFO L413 NwaCegarLoop]: 1466 mSDtfsCounter, 762 mSDsluCounter, 3743 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 5209 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:16,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 5209 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1152 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2022-11-23 15:52:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23711 states. [2022-11-23 15:52:20,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23711 to 23665. [2022-11-23 15:52:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23665 states, 14978 states have (on average 1.2251301909467218) internal successors, (18350), 15301 states have internal predecessors, (18350), 6325 states have call successors, (6325), 2300 states have call predecessors, (6325), 2361 states have return successors, (6451), 6094 states have call predecessors, (6451), 6325 states have call successors, (6451) [2022-11-23 15:52:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23665 states to 23665 states and 31126 transitions. [2022-11-23 15:52:20,734 INFO L78 Accepts]: Start accepts. Automaton has 23665 states and 31126 transitions. Word has length 676 [2022-11-23 15:52:20,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:20,736 INFO L495 AbstractCegarLoop]: Abstraction has 23665 states and 31126 transitions. [2022-11-23 15:52:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 4 states have internal predecessors, (209), 3 states have call successors, (97), 2 states have call predecessors, (97), 2 states have return successors, (96), 4 states have call predecessors, (96), 3 states have call successors, (96) [2022-11-23 15:52:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23665 states and 31126 transitions. [2022-11-23 15:52:20,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-11-23 15:52:20,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:20,767 INFO L195 NwaCegarLoop]: trace histogram [26, 22, 21, 21, 14, 14, 14, 14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:52:20,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 15:52:20,768 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:52:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1115102190, now seen corresponding path program 1 times [2022-11-23 15:52:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:20,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373925203] [2022-11-23 15:52:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2593 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-11-23 15:52:22,032 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:22,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373925203] [2022-11-23 15:52:22,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373925203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:22,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:22,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:52:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309134083] [2022-11-23 15:52:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:52:22,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:52:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:52:22,036 INFO L87 Difference]: Start difference. First operand 23665 states and 31126 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-23 15:52:27,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:29,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:37,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:39,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:52:40,349 INFO L93 Difference]: Finished difference Result 50365 states and 66343 transitions. [2022-11-23 15:52:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:52:40,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 676 [2022-11-23 15:52:40,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:52:40,457 INFO L225 Difference]: With dead ends: 50365 [2022-11-23 15:52:40,458 INFO L226 Difference]: Without dead ends: 26717 [2022-11-23 15:52:40,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:52:40,510 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 802 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 5328 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:52:40,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 5328 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1169 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-11-23 15:52:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26717 states. [2022-11-23 15:52:44,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26717 to 26673. [2022-11-23 15:52:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26673 states, 16922 states have (on average 1.2217822952369697) internal successors, (20675), 17286 states have internal predecessors, (20675), 7109 states have call successors, (7109), 2562 states have call predecessors, (7109), 2641 states have return successors, (7262), 6855 states have call predecessors, (7262), 7109 states have call successors, (7262) [2022-11-23 15:52:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26673 states to 26673 states and 35046 transitions. [2022-11-23 15:52:44,586 INFO L78 Accepts]: Start accepts. Automaton has 26673 states and 35046 transitions. Word has length 676 [2022-11-23 15:52:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:52:44,587 INFO L495 AbstractCegarLoop]: Abstraction has 26673 states and 35046 transitions. [2022-11-23 15:52:44,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 4 states have internal predecessors, (207), 3 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-23 15:52:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 26673 states and 35046 transitions. [2022-11-23 15:52:44,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2022-11-23 15:52:44,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:52:44,608 INFO L195 NwaCegarLoop]: trace histogram [26, 22, 21, 21, 14, 14, 14, 14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:52:44,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 15:52:44,609 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:52:44,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:52:44,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1277923626, now seen corresponding path program 1 times [2022-11-23 15:52:44,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:52:44,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740808625] [2022-11-23 15:52:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:52:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:52:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:52:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2593 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 2540 trivial. 0 not checked. [2022-11-23 15:52:45,715 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:52:45,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740808625] [2022-11-23 15:52:45,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740808625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:52:45,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:52:45,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:52:45,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892017501] [2022-11-23 15:52:45,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:52:45,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:52:45,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:52:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:52:45,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:52:45,718 INFO L87 Difference]: Start difference. First operand 26673 states and 35046 transitions. Second operand has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-23 15:52:51,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:52,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:54,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:52:56,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:04,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:06,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:08,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:08,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:08,671 INFO L93 Difference]: Finished difference Result 56192 states and 73956 transitions. [2022-11-23 15:53:08,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:53:08,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 677 [2022-11-23 15:53:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:08,758 INFO L225 Difference]: With dead ends: 56192 [2022-11-23 15:53:08,758 INFO L226 Difference]: Without dead ends: 29536 [2022-11-23 15:53:08,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:53:08,812 INFO L413 NwaCegarLoop]: 1466 mSDtfsCounter, 785 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 5193 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:08,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 5193 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1158 Invalid, 2 Unknown, 0 Unchecked, 17.7s Time] [2022-11-23 15:53:08,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29536 states. [2022-11-23 15:53:12,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29536 to 29490. [2022-11-23 15:53:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29490 states, 18758 states have (on average 1.218999893378825) internal successors, (22866), 19165 states have internal predecessors, (22866), 7835 states have call successors, (7835), 2799 states have call predecessors, (7835), 2896 states have return successors, (8017), 7556 states have call predecessors, (8017), 7835 states have call successors, (8017) [2022-11-23 15:53:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29490 states to 29490 states and 38718 transitions. [2022-11-23 15:53:13,141 INFO L78 Accepts]: Start accepts. Automaton has 29490 states and 38718 transitions. Word has length 677 [2022-11-23 15:53:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:13,142 INFO L495 AbstractCegarLoop]: Abstraction has 29490 states and 38718 transitions. [2022-11-23 15:53:13,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.6) internal successors, (208), 4 states have internal predecessors, (208), 3 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-23 15:53:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 29490 states and 38718 transitions. [2022-11-23 15:53:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2022-11-23 15:53:13,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:13,171 INFO L195 NwaCegarLoop]: trace histogram [26, 22, 21, 21, 14, 14, 14, 14, 14, 14, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:53:13,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 15:53:13,171 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:53:13,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1276606413, now seen corresponding path program 1 times [2022-11-23 15:53:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:13,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727573395] [2022-11-23 15:53:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:13,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2593 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 2531 trivial. 0 not checked. [2022-11-23 15:53:14,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:14,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727573395] [2022-11-23 15:53:14,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727573395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:53:14,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184740557] [2022-11-23 15:53:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:14,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:14,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:53:14,731 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:53:14,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:53:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:17,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 8950 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:53:17,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:53:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2593 backedges. 1220 proven. 0 refuted. 0 times theorem prover too weak. 1373 trivial. 0 not checked. [2022-11-23 15:53:17,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:53:17,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184740557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:17,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:53:17,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-23 15:53:17,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621665578] [2022-11-23 15:53:17,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:17,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:53:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:53:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:53:17,969 INFO L87 Difference]: Start difference. First operand 29490 states and 38718 transitions. Second operand has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (98), 3 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-23 15:53:25,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:33,807 INFO L93 Difference]: Finished difference Result 72259 states and 97183 transitions. [2022-11-23 15:53:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:53:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (98), 3 states have call predecessors, (98), 2 states have call successors, (98) Word has length 678 [2022-11-23 15:53:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:53:33,930 INFO L225 Difference]: With dead ends: 72259 [2022-11-23 15:53:33,930 INFO L226 Difference]: Without dead ends: 42786 [2022-11-23 15:53:33,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:53:33,985 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 162 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:53:33,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 4103 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 15:53:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42786 states. [2022-11-23 15:53:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42786 to 29562. [2022-11-23 15:53:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29562 states, 18812 states have (on average 1.2183712523920902) internal successors, (22920), 19219 states have internal predecessors, (22920), 7835 states have call successors, (7835), 2799 states have call predecessors, (7835), 2914 states have return successors, (8125), 7574 states have call predecessors, (8125), 7835 states have call successors, (8125) [2022-11-23 15:53:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29562 states to 29562 states and 38880 transitions. [2022-11-23 15:53:39,282 INFO L78 Accepts]: Start accepts. Automaton has 29562 states and 38880 transitions. Word has length 678 [2022-11-23 15:53:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:53:39,283 INFO L495 AbstractCegarLoop]: Abstraction has 29562 states and 38880 transitions. [2022-11-23 15:53:39,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.2) internal successors, (221), 4 states have internal predecessors, (221), 2 states have call successors, (101), 2 states have call predecessors, (101), 3 states have return successors, (98), 3 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-23 15:53:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 29562 states and 38880 transitions. [2022-11-23 15:53:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2022-11-23 15:53:39,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:53:39,320 INFO L195 NwaCegarLoop]: trace histogram [27, 22, 21, 21, 15, 15, 15, 15, 15, 15, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:53:39,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:53:39,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:39,535 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:53:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:53:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1282416695, now seen corresponding path program 1 times [2022-11-23 15:53:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:53:39,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218820209] [2022-11-23 15:53:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:53:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2695 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 2655 trivial. 0 not checked. [2022-11-23 15:53:41,113 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:53:41,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218820209] [2022-11-23 15:53:41,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218820209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:53:41,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876087090] [2022-11-23 15:53:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:53:41,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:53:41,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:53:41,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:53:41,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d412b37f-7414-433b-b740-dec33bddd719/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:53:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:53:44,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 8876 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:53:44,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:53:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2695 backedges. 1266 proven. 0 refuted. 0 times theorem prover too weak. 1429 trivial. 0 not checked. [2022-11-23 15:53:44,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:53:44,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876087090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:53:44,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:53:44,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-23 15:53:44,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044289609] [2022-11-23 15:53:44,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:53:44,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:53:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:53:44,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:53:44,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:53:44,713 INFO L87 Difference]: Start difference. First operand 29562 states and 38880 transitions. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 2 states have call successors, (104), 2 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-23 15:53:48,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:53,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:53:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:53:59,876 INFO L93 Difference]: Finished difference Result 72403 states and 97507 transitions. [2022-11-23 15:53:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:53:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 4 states have internal predecessors, (233), 2 states have call successors, (104), 2 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 2 states have call successors, (103) Word has length 695 [2022-11-23 15:53:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:54:00,007 INFO L225 Difference]: With dead ends: 72403 [2022-11-23 15:54:00,007 INFO L226 Difference]: Without dead ends: 42858 [2022-11-23 15:54:00,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:54:00,066 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 162 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:54:00,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 4103 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 883 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-23 15:54:00,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42858 states.