./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-ethernet-tehuti-tehuti.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI --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 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 --- 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-5e519f3 [2022-11-03 02:23:27,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:23:27,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:23:27,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:23:27,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:23:27,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:23:27,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:23:27,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:23:27,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:23:27,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:23:27,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:23:27,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:23:27,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:23:27,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:23:27,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:23:27,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:23:27,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:23:27,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:23:27,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:23:27,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:23:27,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:23:27,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:23:27,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:23:27,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:23:27,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:23:27,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:23:27,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:23:27,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:23:27,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:23:27,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:23:27,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:23:27,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:23:27,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:23:27,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:23:27,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:23:27,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:23:27,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:23:27,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:23:27,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:23:27,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:23:27,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:23:27,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:23:27,985 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:23:27,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:23:27,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:23:27,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:23:27,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:23:27,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:23:27,987 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:23:27,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:23:27,987 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:23:27,988 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:23:27,988 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:23:27,988 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:23:27,988 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:23:27,988 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:23:27,989 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:23:27,989 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:23:27,989 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:23:27,989 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:23:27,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:23:27,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:23:27,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:23:27,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:23:28,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:23:28,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:23:28,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:23:28,000 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:23:28,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:23:28,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:23:28,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:23:28,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:28,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:23:28,002 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:23:28,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:23:28,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:23:28,006 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:23:28,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:23:28,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:23:28,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:23:28,016 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_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36bb93ca3621bc77a2fce568a30c9f1e07b847a50c59f68bc973979594911c40 [2022-11-03 02:23:28,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:23:28,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:23:28,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:23:28,403 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:23:28,404 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:23:28,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2022-11-03 02:23:28,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/data/dc0e2b660/954512b898fe4041be68dcb56b1c9d0b/FLAG55d9460c0 [2022-11-03 02:23:29,556 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:23:29,557 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2022-11-03 02:23:29,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/data/dc0e2b660/954512b898fe4041be68dcb56b1c9d0b/FLAG55d9460c0 [2022-11-03 02:23:29,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/data/dc0e2b660/954512b898fe4041be68dcb56b1c9d0b [2022-11-03 02:23:29,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:23:29,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:23:29,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:29,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:23:29,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:23:29,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:29" (1/1) ... [2022-11-03 02:23:29,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c04085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:29, skipping insertion in model container [2022-11-03 02:23:29,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:29" (1/1) ... [2022-11-03 02:23:29,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:23:30,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:23:34,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2022-11-03 02:23:34,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2022-11-03 02:23:34,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:34,109 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:23:34,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376704,376717] [2022-11-03 02:23:34,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i[376849,376862] [2022-11-03 02:23:34,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:34,804 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:23:34,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34 WrapperNode [2022-11-03 02:23:34,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:34,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:34,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:23:34,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:23:34,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:34,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,361 INFO L138 Inliner]: procedures = 490, calls = 2384, calls flagged for inlining = 232, calls inlined = 186, statements flattened = 4701 [2022-11-03 02:23:35,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:35,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:23:35,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:23:35,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:23:35,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,681 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:23:35,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:23:35,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:23:35,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:23:35,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (1/1) ... [2022-11-03 02:23:35,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:35,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:35,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:23:35,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:23:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:23:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:23:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:23:35,865 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:23:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 02:23:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 02:23:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-03 02:23:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-03 02:23:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_open [2022-11-03 02:23:35,866 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_open [2022-11-03 02:23:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:23:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:23:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:23:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:23:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-03 02:23:35,867 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-03 02:23:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-03 02:23:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-03 02:23:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 02:23:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 02:23:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:23:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:23:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:23:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:23:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_wptr [2022-11-03 02:23:35,869 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_wptr [2022-11-03 02:23:35,869 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:23:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:23:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:23:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:23:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:23:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:23:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:23:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:23:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:23:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:23:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-03 02:23:35,872 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-03 02:23:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:23:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:23:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:23:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:23:35,873 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:23:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:23:35,874 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:23:35,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-03 02:23:35,875 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-03 02:23:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:23:35,876 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 02:23:35,876 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 02:23:35,877 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:23:35,878 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:23:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:23:35,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:23:35,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:23:35,879 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_tx_db_ptr_next [2022-11-03 02:23:35,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_tx_db_ptr_next [2022-11-03 02:23:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:23:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:23:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:23:35,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:23:35,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:23:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:23:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:23:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_close [2022-11-03 02:23:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_close [2022-11-03 02:23:35,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:23:35,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:23:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:23:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:23:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2022-11-03 02:23:35,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_bdx_priv [2022-11-03 02:23:35,882 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 02:23:35,883 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 02:23:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 02:23:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 02:23:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:23:35,884 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:23:35,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:23:35,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:23:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:23:35,886 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_restore_mac [2022-11-03 02:23:35,886 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_restore_mac [2022-11-03 02:23:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:23:35,887 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rx_alloc_skbs [2022-11-03 02:23:35,887 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rx_alloc_skbs [2022-11-03 02:23:35,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:23:35,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:23:35,889 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:23:35,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:23:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:23:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:23:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:23:35,890 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-03 02:23:35,890 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-03 02:23:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:23:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:23:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:23:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:23:35,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-03 02:23:35,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-03 02:23:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 02:23:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 02:23:35,892 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:23:35,892 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:23:35,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:23:35,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:23:35,894 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_available [2022-11-03 02:23:35,895 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_available [2022-11-03 02:23:35,897 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-03 02:23:35,898 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-03 02:23:35,899 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:23:35,899 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:23:35,900 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:23:35,900 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:23:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_addr_elem [2022-11-03 02:23:35,901 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_addr_elem [2022-11-03 02:23:35,901 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-03 02:23:35,908 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-03 02:23:35,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:23:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:23:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:23:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:23:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:23:35,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:23:35,909 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_tx_db_inc_rptr [2022-11-03 02:23:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_tx_db_inc_rptr [2022-11-03 02:23:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:23:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:23:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:23:35,910 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:23:35,910 INFO L130 BoogieDeclarations]: Found specification of procedure __bdx_vlan_rx_vid [2022-11-03 02:23:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __bdx_vlan_rx_vid [2022-11-03 02:23:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 02:23:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 02:23:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_free [2022-11-03 02:23:35,911 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_free [2022-11-03 02:23:35,911 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_remove [2022-11-03 02:23:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_remove [2022-11-03 02:23:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:23:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:23:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:23:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:23:35,912 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 02:23:35,912 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 02:23:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:23:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:23:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:23:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-03 02:23:35,913 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-03 02:23:35,913 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:23:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:23:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:23:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:23:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:23:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:23:35,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:23:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-03 02:23:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_reset [2022-11-03 02:23:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_reset [2022-11-03 02:23:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:23:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:23:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:23:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:23:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_rxdb_alloc_elem [2022-11-03 02:23:35,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_rxdb_alloc_elem [2022-11-03 02:23:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_range_check [2022-11-03 02:23:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_range_check [2022-11-03 02:23:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 02:23:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 02:23:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-03 02:23:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-03 02:23:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:23:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:23:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_fifo_init [2022-11-03 02:23:35,918 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_fifo_init [2022-11-03 02:23:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:23:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:23:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_link_changed [2022-11-03 02:23:35,919 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_link_changed [2022-11-03 02:23:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:23:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:23:35,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:23:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:23:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:23:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure bdx_setmulti [2022-11-03 02:23:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure bdx_setmulti [2022-11-03 02:23:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure print_rxfd [2022-11-03 02:23:35,922 INFO L138 BoogieDeclarations]: Found implementation of procedure print_rxfd [2022-11-03 02:23:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:23:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:23:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:23:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:23:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:23:35,923 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:23:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:23:35,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:23:35,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:23:36,881 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:23:36,906 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:37,151 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:26:36,801 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:26:36,933 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:26:40,252 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:26:40,253 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:26:40,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:40 BoogieIcfgContainer [2022-11-03 02:26:40,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:26:40,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:26:40,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:26:40,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:26:40,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:23:29" (1/3) ... [2022-11-03 02:26:40,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287bb5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:40, skipping insertion in model container [2022-11-03 02:26:40,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:34" (2/3) ... [2022-11-03 02:26:40,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287bb5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:40, skipping insertion in model container [2022-11-03 02:26:40,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:40" (3/3) ... [2022-11-03 02:26:40,267 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-tehuti-tehuti.cil.i [2022-11-03 02:26:40,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:26:40,286 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:26:40,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:26:40,405 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;@68bd281d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:26:40,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:26:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 1231 states, 720 states have (on average 1.275) internal successors, (918), 743 states have internal predecessors, (918), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) [2022-11-03 02:26:40,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:26:40,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:40,436 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:40,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:40,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1118130461, now seen corresponding path program 1 times [2022-11-03 02:26:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:40,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681388296] [2022-11-03 02:26:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 02:26:42,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:42,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681388296] [2022-11-03 02:26:42,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681388296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:42,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:42,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:42,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732126192] [2022-11-03 02:26:42,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:42,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:42,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:42,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:42,509 INFO L87 Difference]: Start difference. First operand has 1231 states, 720 states have (on average 1.275) internal successors, (918), 743 states have internal predecessors, (918), 420 states have call successors, (420), 91 states have call predecessors, (420), 90 states have return successors, (415), 412 states have call predecessors, (415), 415 states have call successors, (415) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:26:44,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:49,626 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 [] [2022-11-03 02:26:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:50,569 INFO L93 Difference]: Finished difference Result 3387 states and 4870 transitions. [2022-11-03 02:26:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2022-11-03 02:26:50,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:50,613 INFO L225 Difference]: With dead ends: 3387 [2022-11-03 02:26:50,614 INFO L226 Difference]: Without dead ends: 2110 [2022-11-03 02:26:50,629 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 [2022-11-03 02:26:50,633 INFO L413 NwaCegarLoop]: 1959 mSDtfsCounter, 1308 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:50,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 3407 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 572 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:26:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-11-03 02:26:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2105. [2022-11-03 02:26:50,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 1262 states have (on average 1.2567353407290016) internal successors, (1586), 1298 states have internal predecessors, (1586), 682 states have call successors, (682), 159 states have call predecessors, (682), 159 states have return successors, (682), 677 states have call predecessors, (682), 682 states have call successors, (682) [2022-11-03 02:26:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2950 transitions. [2022-11-03 02:26:50,891 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2950 transitions. Word has length 86 [2022-11-03 02:26:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:50,892 INFO L495 AbstractCegarLoop]: Abstraction has 2105 states and 2950 transitions. [2022-11-03 02:26:50,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-03 02:26:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2950 transitions. [2022-11-03 02:26:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 02:26:50,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:50,904 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:26:50,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1620916492, now seen corresponding path program 1 times [2022-11-03 02:26:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:50,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625105110] [2022-11-03 02:26:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 02:26:52,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625105110] [2022-11-03 02:26:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625105110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:52,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:52,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:52,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859499586] [2022-11-03 02:26:52,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:52,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:52,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:52,279 INFO L87 Difference]: Start difference. First operand 2105 states and 2950 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:26:54,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:26:58,106 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 [] [2022-11-03 02:27:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:00,528 INFO L93 Difference]: Finished difference Result 5836 states and 8157 transitions. [2022-11-03 02:27:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:00,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 93 [2022-11-03 02:27:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:00,555 INFO L225 Difference]: With dead ends: 5836 [2022-11-03 02:27:00,555 INFO L226 Difference]: Without dead ends: 3742 [2022-11-03 02:27:00,565 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 [2022-11-03 02:27:00,567 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1560 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:00,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 3062 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 491 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 02:27:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2022-11-03 02:27:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3735. [2022-11-03 02:27:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 2246 states have (on average 1.257346393588602) internal successors, (2824), 2311 states have internal predecessors, (2824), 1188 states have call successors, (1188), 300 states have call predecessors, (1188), 299 states have return successors, (1200), 1173 states have call predecessors, (1200), 1188 states have call successors, (1200) [2022-11-03 02:27:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 5212 transitions. [2022-11-03 02:27:00,793 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 5212 transitions. Word has length 93 [2022-11-03 02:27:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:00,796 INFO L495 AbstractCegarLoop]: Abstraction has 3735 states and 5212 transitions. [2022-11-03 02:27:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 02:27:00,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 5212 transitions. [2022-11-03 02:27:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-03 02:27:00,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:00,805 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-03 02:27:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:27:00,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:00,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:00,816 INFO L85 PathProgramCache]: Analyzing trace with hash -384280151, now seen corresponding path program 1 times [2022-11-03 02:27:00,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:00,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461661816] [2022-11-03 02:27:00,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-03 02:27:02,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:02,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461661816] [2022-11-03 02:27:02,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461661816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:02,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:02,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:02,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74067148] [2022-11-03 02:27:02,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:02,212 INFO L87 Difference]: Start difference. First operand 3735 states and 5212 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:27:04,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:09,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:12,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:13,280 INFO L93 Difference]: Finished difference Result 9018 states and 12577 transitions. [2022-11-03 02:27:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:13,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 130 [2022-11-03 02:27:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:13,318 INFO L225 Difference]: With dead ends: 9018 [2022-11-03 02:27:13,318 INFO L226 Difference]: Without dead ends: 5294 [2022-11-03 02:27:13,337 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 [2022-11-03 02:27:13,338 INFO L413 NwaCegarLoop]: 2497 mSDtfsCounter, 1259 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:13,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 3884 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 732 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 02:27:13,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2022-11-03 02:27:13,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 5287. [2022-11-03 02:27:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 3185 states have (on average 1.2530612244897958) internal successors, (3991), 3277 states have internal predecessors, (3991), 1670 states have call successors, (1670), 431 states have call predecessors, (1670), 430 states have return successors, (1685), 1648 states have call predecessors, (1685), 1670 states have call successors, (1685) [2022-11-03 02:27:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 7346 transitions. [2022-11-03 02:27:13,724 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 7346 transitions. Word has length 130 [2022-11-03 02:27:13,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:13,726 INFO L495 AbstractCegarLoop]: Abstraction has 5287 states and 7346 transitions. [2022-11-03 02:27:13,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:27:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 7346 transitions. [2022-11-03 02:27:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-03 02:27:13,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:13,742 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:13,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:27:13,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1444604824, now seen corresponding path program 1 times [2022-11-03 02:27:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:13,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445177547] [2022-11-03 02:27:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:13,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-03 02:27:15,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:15,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445177547] [2022-11-03 02:27:15,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445177547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:15,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:15,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:15,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465007692] [2022-11-03 02:27:15,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:15,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:15,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:15,471 INFO L87 Difference]: Start difference. First operand 5287 states and 7346 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:27:17,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:22,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:23,476 INFO L93 Difference]: Finished difference Result 10569 states and 14688 transitions. [2022-11-03 02:27:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:23,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 192 [2022-11-03 02:27:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:23,509 INFO L225 Difference]: With dead ends: 10569 [2022-11-03 02:27:23,509 INFO L226 Difference]: Without dead ends: 5293 [2022-11-03 02:27:23,530 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 [2022-11-03 02:27:23,531 INFO L413 NwaCegarLoop]: 1428 mSDtfsCounter, 0 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:23,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2855 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 500 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:27:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2022-11-03 02:27:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 5293. [2022-11-03 02:27:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 3191 states have (on average 1.2525853964274523) internal successors, (3997), 3283 states have internal predecessors, (3997), 1670 states have call successors, (1670), 431 states have call predecessors, (1670), 430 states have return successors, (1685), 1648 states have call predecessors, (1685), 1670 states have call successors, (1685) [2022-11-03 02:27:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 7352 transitions. [2022-11-03 02:27:23,833 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 7352 transitions. Word has length 192 [2022-11-03 02:27:23,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:23,834 INFO L495 AbstractCegarLoop]: Abstraction has 5293 states and 7352 transitions. [2022-11-03 02:27:23,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:27:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 7352 transitions. [2022-11-03 02:27:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 02:27:23,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:23,843 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:23,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:27:23,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1254316823, now seen corresponding path program 1 times [2022-11-03 02:27:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:23,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652327029] [2022-11-03 02:27:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:23,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-03 02:27:25,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652327029] [2022-11-03 02:27:25,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652327029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:27:25,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489564163] [2022-11-03 02:27:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:25,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:27:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:27:25,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:27:25,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:27:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:28,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 4810 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:27:28,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:28:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-03 02:28:01,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:28:01,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489564163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:01,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:28:01,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-11-03 02:28:01,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924635019] [2022-11-03 02:28:01,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:28:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:28:01,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:28:01,063 INFO L87 Difference]: Start difference. First operand 5293 states and 7352 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-03 02:28:03,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:16,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:18,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:18,757 INFO L93 Difference]: Finished difference Result 9899 states and 13709 transitions. [2022-11-03 02:28:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:28:18,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 193 [2022-11-03 02:28:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:18,817 INFO L225 Difference]: With dead ends: 9899 [2022-11-03 02:28:18,817 INFO L226 Difference]: Without dead ends: 9897 [2022-11-03 02:28:18,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:28:18,825 INFO L413 NwaCegarLoop]: 1783 mSDtfsCounter, 1365 mSDsluCounter, 7119 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 7874 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:18,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 7874 Invalid, 1983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1980 Invalid, 2 Unknown, 0 Unchecked, 16.6s Time] [2022-11-03 02:28:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2022-11-03 02:28:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 9889. [2022-11-03 02:28:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9889 states, 5994 states have (on average 1.257590924257591) internal successors, (7538), 6169 states have internal predecessors, (7538), 3065 states have call successors, (3065), 830 states have call predecessors, (3065), 828 states have return successors, (3094), 3021 states have call predecessors, (3094), 3065 states have call successors, (3094) [2022-11-03 02:28:19,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 13697 transitions. [2022-11-03 02:28:19,751 INFO L78 Accepts]: Start accepts. Automaton has 9889 states and 13697 transitions. Word has length 193 [2022-11-03 02:28:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:19,753 INFO L495 AbstractCegarLoop]: Abstraction has 9889 states and 13697 transitions. [2022-11-03 02:28:19,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-11-03 02:28:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9889 states and 13697 transitions. [2022-11-03 02:28:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-03 02:28:19,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:19,773 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:19,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:19,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:28:19,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:19,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:19,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1425732158, now seen corresponding path program 1 times [2022-11-03 02:28:19,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:19,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913195891] [2022-11-03 02:28:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-03 02:28:21,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:21,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913195891] [2022-11-03 02:28:21,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913195891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:21,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:21,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:21,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745382689] [2022-11-03 02:28:21,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:21,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:21,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:21,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:21,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:21,237 INFO L87 Difference]: Start difference. First operand 9889 states and 13697 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:28:23,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:26,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:29,188 INFO L93 Difference]: Finished difference Result 19842 states and 27328 transitions. [2022-11-03 02:28:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:29,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 267 [2022-11-03 02:28:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:29,238 INFO L225 Difference]: With dead ends: 19842 [2022-11-03 02:28:29,238 INFO L226 Difference]: Without dead ends: 9964 [2022-11-03 02:28:29,277 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 [2022-11-03 02:28:29,278 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 1249 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:29,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 3130 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:28:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9964 states. [2022-11-03 02:28:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9964 to 9959. [2022-11-03 02:28:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9959 states, 6053 states have (on average 1.2397158433834463) internal successors, (7504), 6234 states have internal predecessors, (7504), 3022 states have call successors, (3022), 885 states have call predecessors, (3022), 882 states have return successors, (3058), 2977 states have call predecessors, (3058), 3022 states have call successors, (3058) [2022-11-03 02:28:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9959 states to 9959 states and 13584 transitions. [2022-11-03 02:28:30,092 INFO L78 Accepts]: Start accepts. Automaton has 9959 states and 13584 transitions. Word has length 267 [2022-11-03 02:28:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:30,093 INFO L495 AbstractCegarLoop]: Abstraction has 9959 states and 13584 transitions. [2022-11-03 02:28:30,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-03 02:28:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9959 states and 13584 transitions. [2022-11-03 02:28:30,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-03 02:28:30,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:30,101 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 8, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:30,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:28:30,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:30,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:30,102 INFO L85 PathProgramCache]: Analyzing trace with hash 856483651, now seen corresponding path program 1 times [2022-11-03 02:28:30,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:30,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552848861] [2022-11-03 02:28:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:30,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-11-03 02:28:31,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:31,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552848861] [2022-11-03 02:28:31,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552848861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:31,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:31,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:28:31,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525225406] [2022-11-03 02:28:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:31,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:28:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:28:31,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:28:31,537 INFO L87 Difference]: Start difference. First operand 9959 states and 13584 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:28:33,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:38,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:40,548 INFO L93 Difference]: Finished difference Result 19716 states and 26930 transitions. [2022-11-03 02:28:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:28:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 271 [2022-11-03 02:28:40,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:40,589 INFO L225 Difference]: With dead ends: 19716 [2022-11-03 02:28:40,589 INFO L226 Difference]: Without dead ends: 9786 [2022-11-03 02:28:40,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:28:40,619 INFO L413 NwaCegarLoop]: 1426 mSDtfsCounter, 7 mSDsluCounter, 3338 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4265 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:40,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4265 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 769 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:28:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9786 states. [2022-11-03 02:28:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9786 to 9767. [2022-11-03 02:28:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 5941 states have (on average 1.2385120350109409) internal successors, (7358), 6118 states have internal predecessors, (7358), 2951 states have call successors, (2951), 877 states have call predecessors, (2951), 873 states have return successors, (2986), 2907 states have call predecessors, (2986), 2951 states have call successors, (2986) [2022-11-03 02:28:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13295 transitions. [2022-11-03 02:28:41,292 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13295 transitions. Word has length 271 [2022-11-03 02:28:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:41,294 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13295 transitions. [2022-11-03 02:28:41,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 02:28:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13295 transitions. [2022-11-03 02:28:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-03 02:28:41,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:41,302 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:41,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:28:41,303 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1016545639, now seen corresponding path program 1 times [2022-11-03 02:28:41,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:41,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155777204] [2022-11-03 02:28:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:41,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-11-03 02:28:42,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:42,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155777204] [2022-11-03 02:28:42,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155777204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:42,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:42,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:28:42,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794331034] [2022-11-03 02:28:42,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:42,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:28:42,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:42,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:28:42,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:28:42,864 INFO L87 Difference]: Start difference. First operand 9767 states and 13295 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:28:44,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:49,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:52,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:52,012 INFO L93 Difference]: Finished difference Result 19538 states and 26652 transitions. [2022-11-03 02:28:52,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:28:52,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 306 [2022-11-03 02:28:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:52,062 INFO L225 Difference]: With dead ends: 19538 [2022-11-03 02:28:52,063 INFO L226 Difference]: Without dead ends: 9800 [2022-11-03 02:28:52,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:28:52,097 INFO L413 NwaCegarLoop]: 1432 mSDtfsCounter, 7 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:52,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4279 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 769 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:28:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2022-11-03 02:28:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 9781. [2022-11-03 02:28:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9781 states, 5955 states have (on average 1.237951301427372) internal successors, (7372), 6132 states have internal predecessors, (7372), 2951 states have call successors, (2951), 877 states have call predecessors, (2951), 873 states have return successors, (2986), 2907 states have call predecessors, (2986), 2951 states have call successors, (2986) [2022-11-03 02:28:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 13309 transitions. [2022-11-03 02:28:52,740 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 13309 transitions. Word has length 306 [2022-11-03 02:28:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:52,741 INFO L495 AbstractCegarLoop]: Abstraction has 9781 states and 13309 transitions. [2022-11-03 02:28:52,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-03 02:28:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 13309 transitions. [2022-11-03 02:28:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-03 02:28:52,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:52,751 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:28:52,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1453615049, now seen corresponding path program 1 times [2022-11-03 02:28:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:52,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954984528] [2022-11-03 02:28:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-03 02:28:54,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:54,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954984528] [2022-11-03 02:28:54,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954984528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:54,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:54,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622569534] [2022-11-03 02:28:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:54,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:54,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:54,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:54,110 INFO L87 Difference]: Start difference. First operand 9781 states and 13309 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:28:56,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:59,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:01,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:03,166 INFO L93 Difference]: Finished difference Result 20027 states and 27386 transitions. [2022-11-03 02:29:03,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 347 [2022-11-03 02:29:03,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:03,216 INFO L225 Difference]: With dead ends: 20027 [2022-11-03 02:29:03,217 INFO L226 Difference]: Without dead ends: 10275 [2022-11-03 02:29:03,249 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 [2022-11-03 02:29:03,250 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 69 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:03,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2943 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:29:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10275 states. [2022-11-03 02:29:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10275 to 9837. [2022-11-03 02:29:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9837 states, 5997 states have (on average 1.2386193096548275) internal successors, (7428), 6174 states have internal predecessors, (7428), 2965 states have call successors, (2965), 877 states have call predecessors, (2965), 873 states have return successors, (3000), 2921 states have call predecessors, (3000), 2965 states have call successors, (3000) [2022-11-03 02:29:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9837 states to 9837 states and 13393 transitions. [2022-11-03 02:29:03,903 INFO L78 Accepts]: Start accepts. Automaton has 9837 states and 13393 transitions. Word has length 347 [2022-11-03 02:29:03,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:03,904 INFO L495 AbstractCegarLoop]: Abstraction has 9837 states and 13393 transitions. [2022-11-03 02:29:03,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:29:03,904 INFO L276 IsEmpty]: Start isEmpty. Operand 9837 states and 13393 transitions. [2022-11-03 02:29:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-11-03 02:29:03,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:03,915 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:29:03,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash -684675384, now seen corresponding path program 1 times [2022-11-03 02:29:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755626487] [2022-11-03 02:29:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:03,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-03 02:29:05,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:05,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755626487] [2022-11-03 02:29:05,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755626487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:05,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:05,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:05,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211500114] [2022-11-03 02:29:05,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:05,618 INFO L87 Difference]: Start difference. First operand 9837 states and 13393 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:29:07,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:11,347 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 [] [2022-11-03 02:29:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:13,830 INFO L93 Difference]: Finished difference Result 20195 states and 27645 transitions. [2022-11-03 02:29:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:13,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 348 [2022-11-03 02:29:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:13,881 INFO L225 Difference]: With dead ends: 20195 [2022-11-03 02:29:13,881 INFO L226 Difference]: Without dead ends: 10387 [2022-11-03 02:29:13,916 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 [2022-11-03 02:29:13,917 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 45 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:13,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2942 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 506 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:29:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10387 states. [2022-11-03 02:29:14,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10387 to 9851. [2022-11-03 02:29:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9851 states, 6011 states have (on average 1.2380635501580435) internal successors, (7442), 6188 states have internal predecessors, (7442), 2965 states have call successors, (2965), 877 states have call predecessors, (2965), 873 states have return successors, (3000), 2921 states have call predecessors, (3000), 2965 states have call successors, (3000) [2022-11-03 02:29:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9851 states to 9851 states and 13407 transitions. [2022-11-03 02:29:14,719 INFO L78 Accepts]: Start accepts. Automaton has 9851 states and 13407 transitions. Word has length 348 [2022-11-03 02:29:14,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:14,722 INFO L495 AbstractCegarLoop]: Abstraction has 9851 states and 13407 transitions. [2022-11-03 02:29:14,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-11-03 02:29:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9851 states and 13407 transitions. [2022-11-03 02:29:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-11-03 02:29:14,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:14,728 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:14,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:29:14,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash 396354847, now seen corresponding path program 1 times [2022-11-03 02:29:14,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:14,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590319848] [2022-11-03 02:29:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:14,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2022-11-03 02:29:16,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:16,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590319848] [2022-11-03 02:29:16,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590319848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:29:16,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855764937] [2022-11-03 02:29:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:16,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:16,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:16,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:16,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:29:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:20,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 6421 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:29:20,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2022-11-03 02:29:20,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:20,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855764937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:20,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:29:20,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-03 02:29:20,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337383093] [2022-11-03 02:29:20,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:20,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:20,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:20,264 INFO L87 Difference]: Start difference. First operand 9851 states and 13407 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:29:22,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:27,317 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 [] [2022-11-03 02:29:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:30,733 INFO L93 Difference]: Finished difference Result 19752 states and 26946 transitions. [2022-11-03 02:29:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:30,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) Word has length 351 [2022-11-03 02:29:30,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:30,777 INFO L225 Difference]: With dead ends: 19752 [2022-11-03 02:29:30,778 INFO L226 Difference]: Without dead ends: 9930 [2022-11-03 02:29:30,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:30,808 INFO L413 NwaCegarLoop]: 1427 mSDtfsCounter, 6 mSDsluCounter, 5021 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:30,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5698 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1016 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 02:29:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9930 states. [2022-11-03 02:29:31,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9930 to 9894. [2022-11-03 02:29:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9894 states, 6043 states have (on average 1.2368029124606983) internal successors, (7474), 6222 states have internal predecessors, (7474), 2967 states have call successors, (2967), 877 states have call predecessors, (2967), 882 states have return successors, (3036), 2930 states have call predecessors, (3036), 2967 states have call successors, (3036) [2022-11-03 02:29:31,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9894 states to 9894 states and 13477 transitions. [2022-11-03 02:29:31,445 INFO L78 Accepts]: Start accepts. Automaton has 9894 states and 13477 transitions. Word has length 351 [2022-11-03 02:29:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:31,446 INFO L495 AbstractCegarLoop]: Abstraction has 9894 states and 13477 transitions. [2022-11-03 02:29:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (44), 3 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:29:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9894 states and 13477 transitions. [2022-11-03 02:29:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-03 02:29:31,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:31,455 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:31,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:31,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:29:31,679 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:31,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1500584882, now seen corresponding path program 1 times [2022-11-03 02:29:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:31,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066778978] [2022-11-03 02:29:31,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:31,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:33,670 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-11-03 02:29:33,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:33,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066778978] [2022-11-03 02:29:33,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066778978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:29:33,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399243098] [2022-11-03 02:29:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:33,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:33,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:33,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:33,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:29:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:37,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 6544 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:29:37,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-11-03 02:29:37,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:37,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399243098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:37,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:29:37,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-03 02:29:37,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404924569] [2022-11-03 02:29:37,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:37,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:37,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:37,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:37,098 INFO L87 Difference]: Start difference. First operand 9894 states and 13477 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:29:39,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:44,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:46,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:48,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:48,735 INFO L93 Difference]: Finished difference Result 19822 states and 27047 transitions. [2022-11-03 02:29:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:48,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) Word has length 359 [2022-11-03 02:29:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:48,782 INFO L225 Difference]: With dead ends: 19822 [2022-11-03 02:29:48,783 INFO L226 Difference]: Without dead ends: 9957 [2022-11-03 02:29:48,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:48,820 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 6 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5730 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:48,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5730 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1015 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2022-11-03 02:29:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2022-11-03 02:29:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 9910. [2022-11-03 02:29:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9910 states, 6059 states have (on average 1.2361775870605711) internal successors, (7490), 6230 states have internal predecessors, (7490), 2967 states have call successors, (2967), 877 states have call predecessors, (2967), 882 states have return successors, (3036), 2938 states have call predecessors, (3036), 2967 states have call successors, (3036) [2022-11-03 02:29:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9910 states to 9910 states and 13493 transitions. [2022-11-03 02:29:49,539 INFO L78 Accepts]: Start accepts. Automaton has 9910 states and 13493 transitions. Word has length 359 [2022-11-03 02:29:49,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:49,540 INFO L495 AbstractCegarLoop]: Abstraction has 9910 states and 13493 transitions. [2022-11-03 02:29:49,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (51), 2 states have call predecessors, (51), 3 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 02:29:49,541 INFO L276 IsEmpty]: Start isEmpty. Operand 9910 states and 13493 transitions. [2022-11-03 02:29:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-11-03 02:29:49,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:49,548 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:49,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 02:29:49,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:29:49,775 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:49,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:49,775 INFO L85 PathProgramCache]: Analyzing trace with hash -72070275, now seen corresponding path program 2 times [2022-11-03 02:29:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:49,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713910976] [2022-11-03 02:29:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:49,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2022-11-03 02:29:51,583 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:51,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713910976] [2022-11-03 02:29:51,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713910976] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:29:51,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470520063] [2022-11-03 02:29:51,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:29:51,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:51,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:51,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:51,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:29:54,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 02:29:54,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:29:54,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 4333 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:29:55,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-03 02:29:55,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:55,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470520063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:55,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:29:55,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-03 02:29:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328190389] [2022-11-03 02:29:55,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:55,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:29:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:55,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:29:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:29:55,216 INFO L87 Difference]: Start difference. First operand 9910 states and 13493 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:29:57,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:01,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:04,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:04,439 INFO L93 Difference]: Finished difference Result 19860 states and 27100 transitions. [2022-11-03 02:30:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:30:04,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 367 [2022-11-03 02:30:04,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:04,466 INFO L225 Difference]: With dead ends: 19860 [2022-11-03 02:30:04,466 INFO L226 Difference]: Without dead ends: 9979 [2022-11-03 02:30:04,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:30:04,495 INFO L413 NwaCegarLoop]: 1434 mSDtfsCounter, 8 mSDsluCounter, 3343 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4280 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:04,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 4280 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 765 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:30:04,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9979 states. [2022-11-03 02:30:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9979 to 9958. [2022-11-03 02:30:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9958 states, 6097 states have (on average 1.2358536985402657) internal successors, (7535), 6271 states have internal predecessors, (7535), 2974 states have call successors, (2974), 877 states have call predecessors, (2974), 885 states have return successors, (3048), 2945 states have call predecessors, (3048), 2974 states have call successors, (3048) [2022-11-03 02:30:05,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9958 states to 9958 states and 13557 transitions. [2022-11-03 02:30:05,004 INFO L78 Accepts]: Start accepts. Automaton has 9958 states and 13557 transitions. Word has length 367 [2022-11-03 02:30:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:05,005 INFO L495 AbstractCegarLoop]: Abstraction has 9958 states and 13557 transitions. [2022-11-03 02:30:05,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-03 02:30:05,005 INFO L276 IsEmpty]: Start isEmpty. Operand 9958 states and 13557 transitions. [2022-11-03 02:30:05,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-03 02:30:05,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:05,013 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 5, 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, 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] [2022-11-03 02:30:05,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 02:30:05,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:05,216 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:05,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:05,216 INFO L85 PathProgramCache]: Analyzing trace with hash 853268789, now seen corresponding path program 1 times [2022-11-03 02:30:05,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:05,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240313841] [2022-11-03 02:30:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:05,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-11-03 02:30:06,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:06,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240313841] [2022-11-03 02:30:06,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240313841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:06,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854002081] [2022-11-03 02:30:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:06,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:06,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:06,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:06,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:30:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:10,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 6643 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:30:10,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2022-11-03 02:30:10,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:30:10,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854002081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:10,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:30:10,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-03 02:30:10,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570359868] [2022-11-03 02:30:10,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:10,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:10,788 INFO L87 Difference]: Start difference. First operand 9958 states and 13557 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:30:12,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:17,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:21,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:21,707 INFO L93 Difference]: Finished difference Result 19941 states and 27202 transitions. [2022-11-03 02:30:21,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:30:21,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) Word has length 369 [2022-11-03 02:30:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:21,739 INFO L225 Difference]: With dead ends: 19941 [2022-11-03 02:30:21,739 INFO L226 Difference]: Without dead ends: 10012 [2022-11-03 02:30:21,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:21,762 INFO L413 NwaCegarLoop]: 1433 mSDtfsCounter, 6 mSDsluCounter, 5037 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5720 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:21,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5720 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1016 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:30:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2022-11-03 02:30:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9972. [2022-11-03 02:30:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9972 states, 6111 states have (on average 1.235313369333988) internal successors, (7549), 6278 states have internal predecessors, (7549), 2974 states have call successors, (2974), 877 states have call predecessors, (2974), 885 states have return successors, (3048), 2952 states have call predecessors, (3048), 2974 states have call successors, (3048) [2022-11-03 02:30:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9972 states to 9972 states and 13571 transitions. [2022-11-03 02:30:22,410 INFO L78 Accepts]: Start accepts. Automaton has 9972 states and 13571 transitions. Word has length 369 [2022-11-03 02:30:22,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:22,411 INFO L495 AbstractCegarLoop]: Abstraction has 9972 states and 13571 transitions. [2022-11-03 02:30:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (52), 2 states have call predecessors, (52), 3 states have return successors, (47), 3 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:30:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9972 states and 13571 transitions. [2022-11-03 02:30:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-03 02:30:22,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:22,418 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 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, 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] [2022-11-03 02:30:22,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:22,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:22,647 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:22,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:22,647 INFO L85 PathProgramCache]: Analyzing trace with hash -933805852, now seen corresponding path program 2 times [2022-11-03 02:30:22,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:22,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979354271] [2022-11-03 02:30:22,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2022-11-03 02:30:24,385 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:24,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979354271] [2022-11-03 02:30:24,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979354271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:24,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:24,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:30:24,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156454944] [2022-11-03 02:30:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:24,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:30:24,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:30:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:24,388 INFO L87 Difference]: Start difference. First operand 9972 states and 13571 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:30:26,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:31,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:33,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:36,449 INFO L93 Difference]: Finished difference Result 19969 states and 27230 transitions. [2022-11-03 02:30:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:30:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) Word has length 377 [2022-11-03 02:30:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:36,482 INFO L225 Difference]: With dead ends: 19969 [2022-11-03 02:30:36,482 INFO L226 Difference]: Without dead ends: 10026 [2022-11-03 02:30:36,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:30:36,508 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 6 mSDsluCounter, 5043 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5729 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:36,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5729 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1016 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-11-03 02:30:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10026 states. [2022-11-03 02:30:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10026 to 9986. [2022-11-03 02:30:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 6125 states have (on average 1.2347755102040816) internal successors, (7563), 6285 states have internal predecessors, (7563), 2974 states have call successors, (2974), 877 states have call predecessors, (2974), 885 states have return successors, (3048), 2959 states have call predecessors, (3048), 2974 states have call successors, (3048) [2022-11-03 02:30:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 13585 transitions. [2022-11-03 02:30:37,181 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 13585 transitions. Word has length 377 [2022-11-03 02:30:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:37,182 INFO L495 AbstractCegarLoop]: Abstraction has 9986 states and 13585 transitions. [2022-11-03 02:30:37,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 3 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:30:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 13585 transitions. [2022-11-03 02:30:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-03 02:30:37,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:37,190 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 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, 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] [2022-11-03 02:30:37,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:30:37,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1893535597, now seen corresponding path program 1 times [2022-11-03 02:30:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:37,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244828706] [2022-11-03 02:30:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:39,461 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2022-11-03 02:30:39,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:39,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244828706] [2022-11-03 02:30:39,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244828706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:39,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380485238] [2022-11-03 02:30:39,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:39,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:39,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:39,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:39,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:30:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:43,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 6889 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:30:43,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2022-11-03 02:30:44,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2022-11-03 02:30:44,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380485238] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:44,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:30:44,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-03 02:30:44,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362005743] [2022-11-03 02:30:44,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:30:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:44,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:30:44,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:44,402 INFO L87 Difference]: Start difference. First operand 9986 states and 13585 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:30:46,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:50,216 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 [] [2022-11-03 02:30:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:52,292 INFO L93 Difference]: Finished difference Result 19983 states and 27312 transitions. [2022-11-03 02:30:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:30:52,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 385 [2022-11-03 02:30:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:52,319 INFO L225 Difference]: With dead ends: 19983 [2022-11-03 02:30:52,320 INFO L226 Difference]: Without dead ends: 10026 [2022-11-03 02:30:52,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:30:52,345 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 6 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:52,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2849 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 02:30:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10026 states. [2022-11-03 02:30:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10026 to 9996. [2022-11-03 02:30:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9996 states, 6135 states have (on average 1.2343928280358598) internal successors, (7573), 6295 states have internal predecessors, (7573), 2974 states have call successors, (2974), 877 states have call predecessors, (2974), 885 states have return successors, (3048), 2959 states have call predecessors, (3048), 2974 states have call successors, (3048) [2022-11-03 02:30:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 13595 transitions. [2022-11-03 02:30:52,923 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 13595 transitions. Word has length 385 [2022-11-03 02:30:52,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:52,924 INFO L495 AbstractCegarLoop]: Abstraction has 9996 states and 13595 transitions. [2022-11-03 02:30:52,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:30:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 13595 transitions. [2022-11-03 02:30:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-03 02:30:52,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:52,930 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 8, 8, 7, 7, 7, 7, 7, 7, 5, 5, 4, 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, 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] [2022-11-03 02:30:52,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:53,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 02:30:53,159 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:53,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:53,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1586672857, now seen corresponding path program 1 times [2022-11-03 02:30:53,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:53,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675085097] [2022-11-03 02:30:53,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2022-11-03 02:30:55,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675085097] [2022-11-03 02:30:55,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675085097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:55,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695121513] [2022-11-03 02:30:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:55,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:55,400 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:55,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:30:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:59,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 6929 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:30:59,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-11-03 02:32:17,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:32:17,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695121513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:17,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:32:17,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-11-03 02:32:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993313712] [2022-11-03 02:32:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:17,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:32:17,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:32:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:32:17,260 INFO L87 Difference]: Start difference. First operand 9996 states and 13595 transitions. Second operand has 6 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) [2022-11-03 02:32:19,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:26,612 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 [] [2022-11-03 02:32:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:33,353 INFO L93 Difference]: Finished difference Result 10006 states and 13604 transitions. [2022-11-03 02:32:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:32:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) Word has length 394 [2022-11-03 02:32:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:33,389 INFO L225 Difference]: With dead ends: 10006 [2022-11-03 02:32:33,389 INFO L226 Difference]: Without dead ends: 10004 [2022-11-03 02:32:33,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:32:33,396 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 1037 mSDsluCounter, 6576 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 7440 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:33,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 7440 Invalid, 1868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1865 Invalid, 2 Unknown, 0 Unchecked, 15.3s Time] [2022-11-03 02:32:33,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2022-11-03 02:32:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 9996. [2022-11-03 02:32:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9996 states, 6135 states have (on average 1.2337408312958436) internal successors, (7569), 6295 states have internal predecessors, (7569), 2974 states have call successors, (2974), 877 states have call predecessors, (2974), 885 states have return successors, (3048), 2959 states have call predecessors, (3048), 2974 states have call successors, (3048) [2022-11-03 02:32:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 13591 transitions. [2022-11-03 02:32:33,844 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 13591 transitions. Word has length 394 [2022-11-03 02:32:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:33,845 INFO L495 AbstractCegarLoop]: Abstraction has 9996 states and 13591 transitions. [2022-11-03 02:32:33,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 28.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (50), 1 states have call predecessors, (50), 2 states have return successors, (45), 2 states have call predecessors, (45), 1 states have call successors, (45) [2022-11-03 02:32:33,846 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 13591 transitions. [2022-11-03 02:32:33,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-03 02:32:33,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:33,856 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:33,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:34,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 02:32:34,071 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:34,071 INFO L85 PathProgramCache]: Analyzing trace with hash 204196522, now seen corresponding path program 1 times [2022-11-03 02:32:34,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:34,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8272136] [2022-11-03 02:32:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:34,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2022-11-03 02:32:35,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:35,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8272136] [2022-11-03 02:32:35,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8272136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:35,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:35,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:32:35,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702742412] [2022-11-03 02:32:35,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:32:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:35,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:32:35,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:32:35,536 INFO L87 Difference]: Start difference. First operand 9996 states and 13591 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 02:32:37,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:40,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:43,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:45,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:45,410 INFO L93 Difference]: Finished difference Result 19801 states and 27402 transitions. [2022-11-03 02:32:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:32:45,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 415 [2022-11-03 02:32:45,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:45,444 INFO L225 Difference]: With dead ends: 19801 [2022-11-03 02:32:45,445 INFO L226 Difference]: Without dead ends: 12224 [2022-11-03 02:32:45,463 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 [2022-11-03 02:32:45,464 INFO L413 NwaCegarLoop]: 1671 mSDtfsCounter, 325 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:45,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 3115 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 524 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:32:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12224 states. [2022-11-03 02:32:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12224 to 9996. [2022-11-03 02:32:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9996 states, 6135 states have (on average 1.2335778321108395) internal successors, (7568), 6295 states have internal predecessors, (7568), 2974 states have call successors, (2974), 877 states have call predecessors, (2974), 885 states have return successors, (3048), 2959 states have call predecessors, (3048), 2974 states have call successors, (3048) [2022-11-03 02:32:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 13590 transitions. [2022-11-03 02:32:46,046 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 13590 transitions. Word has length 415 [2022-11-03 02:32:46,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:46,046 INFO L495 AbstractCegarLoop]: Abstraction has 9996 states and 13590 transitions. [2022-11-03 02:32:46,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-03 02:32:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 13590 transitions. [2022-11-03 02:32:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-03 02:32:46,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:46,056 INFO L195 NwaCegarLoop]: trace histogram [18, 14, 14, 12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:46,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:32:46,057 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1391639039, now seen corresponding path program 1 times [2022-11-03 02:32:46,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:46,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439195467] [2022-11-03 02:32:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:46,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2022-11-03 02:32:47,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:47,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439195467] [2022-11-03 02:32:47,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439195467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:47,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:47,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:32:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440727946] [2022-11-03 02:32:47,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:47,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:32:47,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:32:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:32:47,939 INFO L87 Difference]: Start difference. First operand 9996 states and 13590 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-03 02:32:50,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:54,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:00,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:00,578 INFO L93 Difference]: Finished difference Result 22300 states and 30292 transitions. [2022-11-03 02:33:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:33:00,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 437 [2022-11-03 02:33:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:00,631 INFO L225 Difference]: With dead ends: 22300 [2022-11-03 02:33:00,632 INFO L226 Difference]: Without dead ends: 12333 [2022-11-03 02:33:00,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:33:00,664 INFO L413 NwaCegarLoop]: 2236 mSDtfsCounter, 1280 mSDsluCounter, 2302 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 20 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:00,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 4114 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1447 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-03 02:33:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12333 states. [2022-11-03 02:33:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12333 to 12314. [2022-11-03 02:33:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12314 states, 7586 states have (on average 1.2314790403374638) internal successors, (9342), 7781 states have internal predecessors, (9342), 3613 states have call successors, (3613), 1104 states have call predecessors, (3613), 1113 states have return successors, (3692), 3592 states have call predecessors, (3692), 3613 states have call successors, (3692) [2022-11-03 02:33:01,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12314 states to 12314 states and 16647 transitions. [2022-11-03 02:33:01,305 INFO L78 Accepts]: Start accepts. Automaton has 12314 states and 16647 transitions. Word has length 437 [2022-11-03 02:33:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:01,305 INFO L495 AbstractCegarLoop]: Abstraction has 12314 states and 16647 transitions. [2022-11-03 02:33:01,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 3 states have call successors, (68), 2 states have call predecessors, (68), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2022-11-03 02:33:01,305 INFO L276 IsEmpty]: Start isEmpty. Operand 12314 states and 16647 transitions. [2022-11-03 02:33:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-03 02:33:01,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:01,315 INFO L195 NwaCegarLoop]: trace histogram [18, 13, 13, 13, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:01,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:33:01,315 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash -408503384, now seen corresponding path program 1 times [2022-11-03 02:33:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:01,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742839913] [2022-11-03 02:33:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 928 trivial. 0 not checked. [2022-11-03 02:33:02,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:02,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742839913] [2022-11-03 02:33:02,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742839913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:02,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:02,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:33:02,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439649317] [2022-11-03 02:33:02,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:02,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:33:02,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:02,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:33:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:33:02,889 INFO L87 Difference]: Start difference. First operand 12314 states and 16647 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2022-11-03 02:33:04,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:08,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:11,433 INFO L93 Difference]: Finished difference Result 25426 states and 34569 transitions. [2022-11-03 02:33:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:33:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 444 [2022-11-03 02:33:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:11,599 INFO L225 Difference]: With dead ends: 25426 [2022-11-03 02:33:11,599 INFO L226 Difference]: Without dead ends: 15891 [2022-11-03 02:33:11,614 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 [2022-11-03 02:33:11,615 INFO L413 NwaCegarLoop]: 1777 mSDtfsCounter, 1462 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:11,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 3068 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 488 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2022-11-03 02:33:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15891 states. [2022-11-03 02:33:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15891 to 15878. [2022-11-03 02:33:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15878 states, 9802 states have (on average 1.2345439706182413) internal successors, (12101), 10062 states have internal predecessors, (12101), 4666 states have call successors, (4666), 1402 states have call predecessors, (4666), 1408 states have return successors, (4775), 4622 states have call predecessors, (4775), 4666 states have call successors, (4775) [2022-11-03 02:33:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15878 states to 15878 states and 21542 transitions. [2022-11-03 02:33:12,331 INFO L78 Accepts]: Start accepts. Automaton has 15878 states and 21542 transitions. Word has length 444 [2022-11-03 02:33:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:12,332 INFO L495 AbstractCegarLoop]: Abstraction has 15878 states and 21542 transitions. [2022-11-03 02:33:12,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2022-11-03 02:33:12,332 INFO L276 IsEmpty]: Start isEmpty. Operand 15878 states and 21542 transitions. [2022-11-03 02:33:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-03 02:33:12,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:12,338 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 13, 13, 8, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:33:12,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:33:12,339 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash -661096541, now seen corresponding path program 1 times [2022-11-03 02:33:12,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:12,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947673545] [2022-11-03 02:33:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:12,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2022-11-03 02:33:14,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:14,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947673545] [2022-11-03 02:33:14,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947673545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:33:14,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073659524] [2022-11-03 02:33:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:14,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:14,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:14,739 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:14,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:33:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:20,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 8420 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:33:20,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 298 proven. 1 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2022-11-03 02:33:20,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:33:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2022-11-03 02:33:20,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073659524] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:33:20,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:33:20,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-03 02:33:20,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26872000] [2022-11-03 02:33:20,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:20,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:33:20,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:33:20,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:20,562 INFO L87 Difference]: Start difference. First operand 15878 states and 21542 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 02:33:22,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:26,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:29,893 INFO L93 Difference]: Finished difference Result 37003 states and 51121 transitions. [2022-11-03 02:33:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:33:29,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 455 [2022-11-03 02:33:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:29,957 INFO L225 Difference]: With dead ends: 37003 [2022-11-03 02:33:29,957 INFO L226 Difference]: Without dead ends: 21154 [2022-11-03 02:33:29,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:33:29,995 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 351 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:29,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 3471 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 599 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 02:33:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21154 states. [2022-11-03 02:33:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21154 to 15886. [2022-11-03 02:33:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15886 states, 9810 states have (on average 1.2343527013251785) internal successors, (12109), 10070 states have internal predecessors, (12109), 4666 states have call successors, (4666), 1402 states have call predecessors, (4666), 1408 states have return successors, (4775), 4622 states have call predecessors, (4775), 4666 states have call successors, (4775) [2022-11-03 02:33:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15886 states to 15886 states and 21550 transitions. [2022-11-03 02:33:30,872 INFO L78 Accepts]: Start accepts. Automaton has 15886 states and 21550 transitions. Word has length 455 [2022-11-03 02:33:30,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:30,872 INFO L495 AbstractCegarLoop]: Abstraction has 15886 states and 21550 transitions. [2022-11-03 02:33:30,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 02:33:30,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15886 states and 21550 transitions. [2022-11-03 02:33:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-03 02:33:30,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:30,878 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:33:30,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-03 02:33:31,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-03 02:33:31,080 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:31,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:31,080 INFO L85 PathProgramCache]: Analyzing trace with hash -31763452, now seen corresponding path program 1 times [2022-11-03 02:33:31,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:31,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394986496] [2022-11-03 02:33:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:31,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2022-11-03 02:33:33,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:33,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394986496] [2022-11-03 02:33:33,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394986496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:33:33,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617057123] [2022-11-03 02:33:33,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:33,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:33,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:33,519 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:33,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d901e217-ef8b-430c-a8c8-5d7d5cea0fa6/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 02:33:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:39,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 8452 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:33:39,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 979 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 976 trivial. 0 not checked. [2022-11-03 02:35:07,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:35:11,465 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 8191 disjunctions. This might take some time... [2022-11-03 02:35:16,820 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 8191 disjunctions. [2022-11-03 02:35:16,908 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 16383 disjunctions. This might take some time... [2022-11-03 02:35:37,373 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 16383 disjunctions. [2022-11-03 02:35:37,537 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 32767 disjunctions. This might take some time...