./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/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_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/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_db8b41f1-00b2-4710-9cef-dd7a8100644f/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 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 --- 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 04:04:50,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:04:50,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:04:50,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:04:50,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:04:50,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:04:50,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:04:50,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:04:50,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:04:50,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:04:50,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:04:50,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:04:50,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:04:50,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:04:50,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:04:50,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:04:50,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:04:50,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:04:50,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:04:50,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:04:50,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:04:50,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:04:50,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:04:50,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:04:50,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:04:50,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:04:50,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:04:50,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:04:50,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:04:50,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:04:50,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:04:50,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:04:50,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:04:50,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:04:50,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:04:50,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:04:50,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:04:50,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:04:50,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:04:50,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:04:50,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:04:50,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:04:50,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:04:50,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:04:50,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:04:50,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:04:50,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:04:50,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:04:50,969 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:04:50,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:04:50,970 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:04:50,970 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:04:50,971 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:04:50,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:04:50,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:04:50,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:04:50,972 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:04:50,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:04:50,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:04:50,973 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:04:50,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:04:50,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:04:50,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:04:50,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:04:50,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:04:50,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:04:50,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:04:50,987 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:04:50,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:04:50,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:04:50,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:04:50,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:04:50,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:04:50,989 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:04:50,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:04:50,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:04:50,989 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:04:50,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:04:50,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:04:50,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:04:50,990 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_db8b41f1-00b2-4710-9cef-dd7a8100644f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2022-11-03 04:04:51,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:04:51,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:04:51,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:04:51,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:04:51,331 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:04:51,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2022-11-03 04:04:51,413 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/data/22eeaa4e2/a235aa9eab67462ca2df3c64469b8212/FLAG7ea2756d0 [2022-11-03 04:04:52,303 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:04:52,304 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2022-11-03 04:04:52,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/data/22eeaa4e2/a235aa9eab67462ca2df3c64469b8212/FLAG7ea2756d0 [2022-11-03 04:04:52,772 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/data/22eeaa4e2/a235aa9eab67462ca2df3c64469b8212 [2022-11-03 04:04:52,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:04:52,776 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:04:52,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:04:52,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:04:52,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:04:52,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:52,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d7abb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:52, skipping insertion in model container [2022-11-03 04:04:52,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:04:52" (1/1) ... [2022-11-03 04:04:52,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:04:52,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:04:55,372 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_db8b41f1-00b2-4710-9cef-dd7a8100644f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2022-11-03 04:04:55,375 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_db8b41f1-00b2-4710-9cef-dd7a8100644f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2022-11-03 04:04:55,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:55,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:04:55,885 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_db8b41f1-00b2-4710-9cef-dd7a8100644f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2022-11-03 04:04:55,886 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_db8b41f1-00b2-4710-9cef-dd7a8100644f/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2022-11-03 04:04:55,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:04:56,079 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:04:56,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56 WrapperNode [2022-11-03 04:04:56,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:04:56,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:56,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:04:56,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:04:56,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,438 INFO L138 Inliner]: procedures = 363, calls = 2922, calls flagged for inlining = 178, calls inlined = 134, statements flattened = 4869 [2022-11-03 04:04:56,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:04:56,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:04:56,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:04:56,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:04:56,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:04:56,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:04:56,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:04:56,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:04:56,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (1/1) ... [2022-11-03 04:04:56,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:04:56,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:56,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:04:56,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_db8b41f1-00b2-4710-9cef-dd7a8100644f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:04:56,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-03 04:04:56,851 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-03 04:04:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-03 04:04:56,852 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-03 04:04:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 04:04:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 04:04:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 04:04:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:04:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:04:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:04:56,853 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:04:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-11-03 04:04:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-11-03 04:04:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 04:04:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 04:04:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-03 04:04:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-03 04:04:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:04:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:04:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-11-03 04:04:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-11-03 04:04:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-03 04:04:56,855 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-03 04:04:56,855 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 04:04:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 04:04:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-11-03 04:04:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-11-03 04:04:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-11-03 04:04:56,856 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-11-03 04:04:56,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2022-11-03 04:04:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2022-11-03 04:04:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-03 04:04:56,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-03 04:04:56,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:04:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-03 04:04:56,858 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-03 04:04:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:04:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 04:04:56,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 04:04:56,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 04:04:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 04:04:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-11-03 04:04:56,859 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-11-03 04:04:56,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:04:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:04:56,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-03 04:04:56,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-03 04:04:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2022-11-03 04:04:56,862 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2022-11-03 04:04:56,862 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 04:04:56,863 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 04:04:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 04:04:56,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 04:04:56,863 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-03 04:04:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-03 04:04:56,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 04:04:56,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 04:04:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-11-03 04:04:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-11-03 04:04:56,865 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-03 04:04:56,865 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-03 04:04:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 04:04:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 04:04:56,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 04:04:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 04:04:56,866 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 04:04:56,866 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-11-03 04:04:56,866 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-11-03 04:04:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 04:04:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 04:04:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 04:04:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-11-03 04:04:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-11-03 04:04:56,867 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-03 04:04:56,868 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-03 04:04:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:04:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-03 04:04:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-03 04:04:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2022-11-03 04:04:56,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2022-11-03 04:04:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 04:04:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 04:04:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 04:04:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 04:04:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 04:04:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 04:04:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 04:04:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 04:04:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 04:04:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 04:04:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 04:04:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 04:04:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-03 04:04:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-03 04:04:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 04:04:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 04:04:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:04:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-11-03 04:04:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-11-03 04:04:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-03 04:04:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-03 04:04:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-11-03 04:04:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-11-03 04:04:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:04:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:04:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:04:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 04:04:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 04:04:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-11-03 04:04:56,881 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-11-03 04:04:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 04:04:56,882 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 04:04:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:04:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 04:04:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 04:04:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:04:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-03 04:04:56,885 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-03 04:04:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 04:04:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-11-03 04:04:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-11-03 04:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-03 04:04:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-03 04:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:04:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-03 04:04:56,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-03 04:04:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-03 04:04:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-03 04:04:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-11-03 04:04:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-11-03 04:04:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 04:04:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 04:04:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 04:04:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 04:04:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-11-03 04:04:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-11-03 04:04:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-11-03 04:04:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-11-03 04:04:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-11-03 04:04:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-11-03 04:04:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:04:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-03 04:04:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-03 04:04:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 04:04:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 04:04:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:04:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:04:57,772 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:04:57,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:04:58,061 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:05:19,392 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 04:05:19,462 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:05:20,350 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:05:20,350 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 04:05:20,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:20 BoogieIcfgContainer [2022-11-03 04:05:20,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:05:20,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:05:20,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:05:20,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:05:20,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:04:52" (1/3) ... [2022-11-03 04:05:20,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438ffd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:20, skipping insertion in model container [2022-11-03 04:05:20,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:04:56" (2/3) ... [2022-11-03 04:05:20,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438ffd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:20, skipping insertion in model container [2022-11-03 04:05:20,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:20" (3/3) ... [2022-11-03 04:05:20,368 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2022-11-03 04:05:20,388 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:05:20,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:05:20,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:05:20,504 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;@e73fe14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:05:20,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:05:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) [2022-11-03 04:05:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-03 04:05:20,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:20,566 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:20,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 422049348, now seen corresponding path program 1 times [2022-11-03 04:05:20,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563586765] [2022-11-03 04:05:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:20,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:21,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-03 04:05:21,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:21,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563586765] [2022-11-03 04:05:21,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563586765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:21,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:21,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:05:21,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599689076] [2022-11-03 04:05:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:21,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:21,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:21,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:21,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:21,809 INFO L87 Difference]: Start difference. First operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 04:05:24,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:27,855 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 04:05:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:29,642 INFO L93 Difference]: Finished difference Result 2613 states and 3867 transitions. [2022-11-03 04:05:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:29,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 239 [2022-11-03 04:05:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:29,671 INFO L225 Difference]: With dead ends: 2613 [2022-11-03 04:05:29,671 INFO L226 Difference]: Without dead ends: 1547 [2022-11-03 04:05:29,683 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 04:05:29,686 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 812 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:29,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2748 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 479 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2022-11-03 04:05:29,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-03 04:05:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1543. [2022-11-03 04:05:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 954 states have (on average 1.3092243186582808) internal successors, (1249), 966 states have internal predecessors, (1249), 492 states have call successors, (492), 96 states have call predecessors, (492), 96 states have return successors, (492), 489 states have call predecessors, (492), 492 states have call successors, (492) [2022-11-03 04:05:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2233 transitions. [2022-11-03 04:05:29,895 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2233 transitions. Word has length 239 [2022-11-03 04:05:29,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:29,899 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2233 transitions. [2022-11-03 04:05:29,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-03 04:05:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2233 transitions. [2022-11-03 04:05:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-03 04:05:29,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:29,917 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:05:29,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1430495524, now seen corresponding path program 1 times [2022-11-03 04:05:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:29,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440814857] [2022-11-03 04:05:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:29,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-03 04:05:30,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:30,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440814857] [2022-11-03 04:05:30,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440814857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:30,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:30,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:05:30,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838560820] [2022-11-03 04:05:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:30,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:30,443 INFO L87 Difference]: Start difference. First operand 1543 states and 2233 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 04:05:33,197 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 04:05:36,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:36,703 INFO L93 Difference]: Finished difference Result 4449 states and 6431 transitions. [2022-11-03 04:05:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:36,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 252 [2022-11-03 04:05:36,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:36,724 INFO L225 Difference]: With dead ends: 4449 [2022-11-03 04:05:36,725 INFO L226 Difference]: Without dead ends: 2945 [2022-11-03 04:05:36,732 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 04:05:36,733 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 1307 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:36,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 2816 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 04:05:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-11-03 04:05:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2939. [2022-11-03 04:05:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 1819 states have (on average 1.3100604727872458) internal successors, (2383), 1847 states have internal predecessors, (2383), 929 states have call successors, (929), 190 states have call predecessors, (929), 190 states have return successors, (929), 919 states have call predecessors, (929), 929 states have call successors, (929) [2022-11-03 04:05:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 4241 transitions. [2022-11-03 04:05:36,909 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 4241 transitions. Word has length 252 [2022-11-03 04:05:36,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:36,911 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 4241 transitions. [2022-11-03 04:05:36,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 04:05:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 4241 transitions. [2022-11-03 04:05:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-03 04:05:36,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:36,926 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:36,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:05:36,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:36,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:36,927 INFO L85 PathProgramCache]: Analyzing trace with hash 134764087, now seen corresponding path program 1 times [2022-11-03 04:05:36,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:36,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638805482] [2022-11-03 04:05:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:36,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2022-11-03 04:05:37,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:37,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638805482] [2022-11-03 04:05:37,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638805482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:37,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:37,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:05:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227919004] [2022-11-03 04:05:37,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:37,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:37,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:37,547 INFO L87 Difference]: Start difference. First operand 2939 states and 4241 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 04:05:39,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:43,673 WARN L539 Checker$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 04:05:44,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:45,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:45,434 INFO L93 Difference]: Finished difference Result 6862 states and 9882 transitions. [2022-11-03 04:05:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:45,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 259 [2022-11-03 04:05:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:45,460 INFO L225 Difference]: With dead ends: 6862 [2022-11-03 04:05:45,460 INFO L226 Difference]: Without dead ends: 3962 [2022-11-03 04:05:45,473 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 04:05:45,474 INFO L413 NwaCegarLoop]: 1413 mSDtfsCounter, 757 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:45,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 2651 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 441 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 04:05:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2022-11-03 04:05:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3958. [2022-11-03 04:05:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 2465 states have (on average 1.3087221095334685) internal successors, (3226), 2499 states have internal predecessors, (3226), 1233 states have call successors, (1233), 259 states have call predecessors, (1233), 259 states have return successors, (1233), 1219 states have call predecessors, (1233), 1233 states have call successors, (1233) [2022-11-03 04:05:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5692 transitions. [2022-11-03 04:05:45,756 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5692 transitions. Word has length 259 [2022-11-03 04:05:45,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:45,757 INFO L495 AbstractCegarLoop]: Abstraction has 3958 states and 5692 transitions. [2022-11-03 04:05:45,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 04:05:45,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5692 transitions. [2022-11-03 04:05:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-03 04:05:45,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:45,765 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:45,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:05:45,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:45,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash -594116935, now seen corresponding path program 1 times [2022-11-03 04:05:45,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:45,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785308572] [2022-11-03 04:05:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-03 04:05:46,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:46,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785308572] [2022-11-03 04:05:46,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785308572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:46,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:46,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:05:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102830907] [2022-11-03 04:05:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:46,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:46,256 INFO L87 Difference]: Start difference. First operand 3958 states and 5692 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 04:05:48,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:49,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:05:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:54,205 INFO L93 Difference]: Finished difference Result 11502 states and 16492 transitions. [2022-11-03 04:05:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 259 [2022-11-03 04:05:54,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:54,248 INFO L225 Difference]: With dead ends: 11502 [2022-11-03 04:05:54,249 INFO L226 Difference]: Without dead ends: 7583 [2022-11-03 04:05:54,264 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 04:05:54,265 INFO L413 NwaCegarLoop]: 1647 mSDtfsCounter, 1305 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:54,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 2873 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-03 04:05:54,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-11-03 04:05:54,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7575. [2022-11-03 04:05:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 4705 states have (on average 1.3005313496280553) internal successors, (6119), 4779 states have internal predecessors, (6119), 2351 states have call successors, (2351), 518 states have call predecessors, (2351), 518 states have return successors, (2351), 2317 states have call predecessors, (2351), 2351 states have call successors, (2351) [2022-11-03 04:05:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 10821 transitions. [2022-11-03 04:05:54,756 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 10821 transitions. Word has length 259 [2022-11-03 04:05:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:54,762 INFO L495 AbstractCegarLoop]: Abstraction has 7575 states and 10821 transitions. [2022-11-03 04:05:54,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2022-11-03 04:05:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 10821 transitions. [2022-11-03 04:05:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-03 04:05:54,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:54,778 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:54,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:05:54,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:54,779 INFO L85 PathProgramCache]: Analyzing trace with hash -111577827, now seen corresponding path program 1 times [2022-11-03 04:05:54,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:54,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637099129] [2022-11-03 04:05:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2022-11-03 04:05:55,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637099129] [2022-11-03 04:05:55,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637099129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:55,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:55,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:05:55,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147205347] [2022-11-03 04:05:55,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:55,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:55,225 INFO L87 Difference]: Start difference. First operand 7575 states and 10821 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-03 04:05:59,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:01,705 INFO L93 Difference]: Finished difference Result 15621 states and 22224 transitions. [2022-11-03 04:06:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 268 [2022-11-03 04:06:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:01,747 INFO L225 Difference]: With dead ends: 15621 [2022-11-03 04:06:01,747 INFO L226 Difference]: Without dead ends: 8085 [2022-11-03 04:06:01,772 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 04:06:01,773 INFO L413 NwaCegarLoop]: 1368 mSDtfsCounter, 573 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:01,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 2575 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 04:06:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2022-11-03 04:06:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 8083. [2022-11-03 04:06:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8083 states, 5021 states have (on average 1.2949611631149174) internal successors, (6502), 5096 states have internal predecessors, (6502), 2476 states have call successors, (2476), 585 states have call predecessors, (2476), 585 states have return successors, (2476), 2442 states have call predecessors, (2476), 2476 states have call successors, (2476) [2022-11-03 04:06:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8083 states to 8083 states and 11454 transitions. [2022-11-03 04:06:02,332 INFO L78 Accepts]: Start accepts. Automaton has 8083 states and 11454 transitions. Word has length 268 [2022-11-03 04:06:02,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:02,333 INFO L495 AbstractCegarLoop]: Abstraction has 8083 states and 11454 transitions. [2022-11-03 04:06:02,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-03 04:06:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 8083 states and 11454 transitions. [2022-11-03 04:06:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-11-03 04:06:02,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:02,340 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:02,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:06:02,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1938418600, now seen corresponding path program 1 times [2022-11-03 04:06:02,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:02,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774088698] [2022-11-03 04:06:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:02,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-11-03 04:06:02,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774088698] [2022-11-03 04:06:02,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774088698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:02,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:02,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:02,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932693392] [2022-11-03 04:06:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:02,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:02,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:02,677 INFO L87 Difference]: Start difference. First operand 8083 states and 11454 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 04:06:05,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:08,531 WARN L539 Checker$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 04:06:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:10,399 INFO L93 Difference]: Finished difference Result 22913 states and 32345 transitions. [2022-11-03 04:06:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:10,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 280 [2022-11-03 04:06:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:10,479 INFO L225 Difference]: With dead ends: 22913 [2022-11-03 04:06:10,479 INFO L226 Difference]: Without dead ends: 14869 [2022-11-03 04:06:10,507 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 04:06:10,508 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 1274 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:10,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2741 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 466 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 04:06:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14869 states. [2022-11-03 04:06:11,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 14843. [2022-11-03 04:06:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14843 states, 9286 states have (on average 1.2893603273745424) internal successors, (11973), 9459 states have internal predecessors, (11973), 4417 states have call successors, (4417), 1139 states have call predecessors, (4417), 1139 states have return successors, (4417), 4325 states have call predecessors, (4417), 4417 states have call successors, (4417) [2022-11-03 04:06:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14843 states to 14843 states and 20807 transitions. [2022-11-03 04:06:11,433 INFO L78 Accepts]: Start accepts. Automaton has 14843 states and 20807 transitions. Word has length 280 [2022-11-03 04:06:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:11,434 INFO L495 AbstractCegarLoop]: Abstraction has 14843 states and 20807 transitions. [2022-11-03 04:06:11,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-03 04:06:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 14843 states and 20807 transitions. [2022-11-03 04:06:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-11-03 04:06:11,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:11,446 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:11,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:06:11,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:11,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:11,447 INFO L85 PathProgramCache]: Analyzing trace with hash 240678243, now seen corresponding path program 1 times [2022-11-03 04:06:11,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:11,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299016456] [2022-11-03 04:06:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:11,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:11,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:11,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-11-03 04:06:11,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299016456] [2022-11-03 04:06:11,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299016456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:11,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:11,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:11,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675378090] [2022-11-03 04:06:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:11,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:11,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:11,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:11,902 INFO L87 Difference]: Start difference. First operand 14843 states and 20807 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-03 04:06:17,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:18,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:18,562 INFO L93 Difference]: Finished difference Result 41049 states and 57378 transitions. [2022-11-03 04:06:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:18,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 289 [2022-11-03 04:06:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:18,686 INFO L225 Difference]: With dead ends: 41049 [2022-11-03 04:06:18,687 INFO L226 Difference]: Without dead ends: 26245 [2022-11-03 04:06:18,737 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 04:06:18,738 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1256 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:18,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 2858 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 04:06:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26245 states. [2022-11-03 04:06:20,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26245 to 26219. [2022-11-03 04:06:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26219 states, 16555 states have (on average 1.2806402899426155) internal successors, (21201), 16911 states have internal predecessors, (21201), 7589 states have call successors, (7589), 2074 states have call predecessors, (7589), 2074 states have return successors, (7589), 7381 states have call predecessors, (7589), 7589 states have call successors, (7589) [2022-11-03 04:06:20,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26219 states to 26219 states and 36379 transitions. [2022-11-03 04:06:20,439 INFO L78 Accepts]: Start accepts. Automaton has 26219 states and 36379 transitions. Word has length 289 [2022-11-03 04:06:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:20,441 INFO L495 AbstractCegarLoop]: Abstraction has 26219 states and 36379 transitions. [2022-11-03 04:06:20,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-03 04:06:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 26219 states and 36379 transitions. [2022-11-03 04:06:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-03 04:06:20,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:20,463 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:20,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:06:20,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:20,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:20,464 INFO L85 PathProgramCache]: Analyzing trace with hash -702179288, now seen corresponding path program 1 times [2022-11-03 04:06:20,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:20,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137634322] [2022-11-03 04:06:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:20,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2022-11-03 04:06:21,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:21,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137634322] [2022-11-03 04:06:21,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137634322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:21,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:21,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:21,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723766215] [2022-11-03 04:06:21,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:21,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:21,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:21,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:21,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:21,608 INFO L87 Difference]: Start difference. First operand 26219 states and 36379 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 04:06:27,647 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 04:06:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:29,556 INFO L93 Difference]: Finished difference Result 58965 states and 81757 transitions. [2022-11-03 04:06:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:29,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 304 [2022-11-03 04:06:29,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:29,712 INFO L225 Difference]: With dead ends: 58965 [2022-11-03 04:06:29,713 INFO L226 Difference]: Without dead ends: 32879 [2022-11-03 04:06:29,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:29,778 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 1428 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:29,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2053 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 373 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 04:06:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32879 states. [2022-11-03 04:06:31,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32879 to 32845. [2022-11-03 04:06:31,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32845 states, 20761 states have (on average 1.2816819999036655) internal successors, (26609), 21209 states have internal predecessors, (26609), 9443 states have call successors, (9443), 2640 states have call predecessors, (9443), 2640 states have return successors, (9443), 9155 states have call predecessors, (9443), 9443 states have call successors, (9443) [2022-11-03 04:06:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32845 states to 32845 states and 45495 transitions. [2022-11-03 04:06:31,993 INFO L78 Accepts]: Start accepts. Automaton has 32845 states and 45495 transitions. Word has length 304 [2022-11-03 04:06:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:31,994 INFO L495 AbstractCegarLoop]: Abstraction has 32845 states and 45495 transitions. [2022-11-03 04:06:31,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 04:06:31,995 INFO L276 IsEmpty]: Start isEmpty. Operand 32845 states and 45495 transitions. [2022-11-03 04:06:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-11-03 04:06:32,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:32,029 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:32,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:06:32,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:32,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:32,030 INFO L85 PathProgramCache]: Analyzing trace with hash 350643325, now seen corresponding path program 1 times [2022-11-03 04:06:32,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:32,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144678947] [2022-11-03 04:06:32,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:32,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2022-11-03 04:06:32,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:32,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144678947] [2022-11-03 04:06:32,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144678947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:32,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:32,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:32,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706313457] [2022-11-03 04:06:32,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:32,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:32,930 INFO L87 Difference]: Start difference. First operand 32845 states and 45495 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 04:06:35,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:37,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:41,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:43,973 INFO L93 Difference]: Finished difference Result 72324 states and 100040 transitions. [2022-11-03 04:06:43,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:43,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 308 [2022-11-03 04:06:43,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:44,162 INFO L225 Difference]: With dead ends: 72324 [2022-11-03 04:06:44,162 INFO L226 Difference]: Without dead ends: 39612 [2022-11-03 04:06:44,246 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 04:06:44,249 INFO L413 NwaCegarLoop]: 1882 mSDtfsCounter, 1186 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:44,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 2744 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 542 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-03 04:06:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39612 states. [2022-11-03 04:06:46,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39612 to 39578. [2022-11-03 04:06:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39578 states, 25028 states have (on average 1.2784880933354643) internal successors, (31998), 25568 states have internal predecessors, (31998), 11268 states have call successors, (11268), 3281 states have call predecessors, (11268), 3281 states have return successors, (11268), 10900 states have call predecessors, (11268), 11268 states have call successors, (11268) [2022-11-03 04:06:46,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39578 states to 39578 states and 54534 transitions. [2022-11-03 04:06:46,495 INFO L78 Accepts]: Start accepts. Automaton has 39578 states and 54534 transitions. Word has length 308 [2022-11-03 04:06:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:46,496 INFO L495 AbstractCegarLoop]: Abstraction has 39578 states and 54534 transitions. [2022-11-03 04:06:46,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-03 04:06:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 39578 states and 54534 transitions. [2022-11-03 04:06:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-03 04:06:46,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:46,523 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:46,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 04:06:46,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:46,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash 320333641, now seen corresponding path program 1 times [2022-11-03 04:06:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:46,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899929774] [2022-11-03 04:06:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2022-11-03 04:06:46,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:46,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899929774] [2022-11-03 04:06:46,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899929774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:46,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:46,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925386615] [2022-11-03 04:06:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:46,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:46,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:46,870 INFO L87 Difference]: Start difference. First operand 39578 states and 54534 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 04:06:50,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:51,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:06:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:56,087 INFO L93 Difference]: Finished difference Result 97488 states and 134352 transitions. [2022-11-03 04:06:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 312 [2022-11-03 04:06:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:56,370 INFO L225 Difference]: With dead ends: 97488 [2022-11-03 04:06:56,370 INFO L226 Difference]: Without dead ends: 58043 [2022-11-03 04:06:56,485 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 04:06:56,486 INFO L413 NwaCegarLoop]: 2243 mSDtfsCounter, 1308 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3467 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:56,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 3467 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 04:06:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58043 states. [2022-11-03 04:06:59,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58043 to 58001. [2022-11-03 04:06:59,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58001 states, 36645 states have (on average 1.2774730522581526) internal successors, (46813), 37475 states have internal predecessors, (46813), 16485 states have call successors, (16485), 4870 states have call predecessors, (16485), 4870 states have return successors, (16485), 15913 states have call predecessors, (16485), 16485 states have call successors, (16485) [2022-11-03 04:06:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58001 states to 58001 states and 79783 transitions. [2022-11-03 04:06:59,855 INFO L78 Accepts]: Start accepts. Automaton has 58001 states and 79783 transitions. Word has length 312 [2022-11-03 04:06:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:59,856 INFO L495 AbstractCegarLoop]: Abstraction has 58001 states and 79783 transitions. [2022-11-03 04:06:59,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 04:06:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 58001 states and 79783 transitions. [2022-11-03 04:06:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-03 04:06:59,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:59,905 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:59,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 04:06:59,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1041429748, now seen corresponding path program 1 times [2022-11-03 04:06:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:59,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269401127] [2022-11-03 04:06:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:59,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:00,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2022-11-03 04:07:00,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:00,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269401127] [2022-11-03 04:07:00,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269401127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:00,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:00,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:07:00,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362207395] [2022-11-03 04:07:00,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:00,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:07:00,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:07:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:07:00,420 INFO L87 Difference]: Start difference. First operand 58001 states and 79783 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 04:07:04,559 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 04:07:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:10,431 INFO L93 Difference]: Finished difference Result 142877 states and 196430 transitions. [2022-11-03 04:07:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:07:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 319 [2022-11-03 04:07:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:10,805 INFO L225 Difference]: With dead ends: 142877 [2022-11-03 04:07:10,805 INFO L226 Difference]: Without dead ends: 85009 [2022-11-03 04:07:10,943 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 04:07:10,944 INFO L413 NwaCegarLoop]: 2245 mSDtfsCounter, 1305 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:10,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 3469 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 627 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 04:07:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85009 states. [2022-11-03 04:07:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85009 to 84967. [2022-11-03 04:07:14,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84967 states, 53575 states have (on average 1.2736910872608493) internal successors, (68238), 54840 states have internal predecessors, (68238), 24147 states have call successors, (24147), 7244 states have call predecessors, (24147), 7244 states have return successors, (24147), 23269 states have call predecessors, (24147), 24147 states have call successors, (24147) [2022-11-03 04:07:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84967 states to 84967 states and 116532 transitions. [2022-11-03 04:07:15,434 INFO L78 Accepts]: Start accepts. Automaton has 84967 states and 116532 transitions. Word has length 319 [2022-11-03 04:07:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:15,435 INFO L495 AbstractCegarLoop]: Abstraction has 84967 states and 116532 transitions. [2022-11-03 04:07:15,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 04:07:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 84967 states and 116532 transitions. [2022-11-03 04:07:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-03 04:07:15,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:15,503 INFO L195 NwaCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:15,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 04:07:15,503 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash -139400590, now seen corresponding path program 1 times [2022-11-03 04:07:15,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:15,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097159758] [2022-11-03 04:07:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:15,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2022-11-03 04:07:16,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:16,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097159758] [2022-11-03 04:07:16,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097159758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:16,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:16,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:07:16,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985583794] [2022-11-03 04:07:16,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:16,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:07:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:07:16,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:07:16,283 INFO L87 Difference]: Start difference. First operand 84967 states and 116532 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 04:07:19,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:20,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:24,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:28,684 WARN L539 Checker$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 04:07:29,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:07:30,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []