./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba --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 c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb --- 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-b5237d8 [2022-11-22 01:59:35,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:59:35,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:59:35,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:59:35,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:59:35,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:59:35,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:59:35,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:59:35,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:59:35,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:59:35,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:59:35,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:59:35,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:59:35,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:59:35,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:59:35,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:59:35,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:59:35,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:59:35,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:59:35,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:59:35,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:59:35,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:59:35,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:59:35,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:59:35,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:59:35,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:59:35,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:59:35,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:59:35,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:59:35,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:59:35,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:59:35,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:59:35,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:59:35,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:59:35,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:59:35,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:59:35,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:59:35,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:59:35,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:59:35,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:59:35,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:59:35,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:59:36,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:59:36,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:59:36,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:59:36,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:59:36,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:59:36,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:59:36,018 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:59:36,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:59:36,019 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:59:36,019 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:59:36,020 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:59:36,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:59:36,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:59:36,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:59:36,021 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:59:36,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:59:36,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:59:36,022 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:59:36,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:59:36,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:59:36,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:59:36,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:59:36,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:59:36,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:59:36,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:59:36,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:59:36,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:59:36,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:59:36,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:59:36,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:36,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:59:36,026 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:59:36,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:59:36,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:59:36,027 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:59:36,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:59:36,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:59:36,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:59:36,027 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_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c76818fb304a0b40bd70831524c213fb48469a57ba59c902bf604bd33d1e93eb [2022-11-22 01:59:36,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:59:36,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:59:36,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:59:36,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:59:36,350 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:59:36,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-22 01:59:39,483 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:59:40,168 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:59:40,169 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-22 01:59:40,218 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/data/f5a9b49b9/ccebe763ff1b4a0cbe42136df2131829/FLAGd1f50588e [2022-11-22 01:59:40,236 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/data/f5a9b49b9/ccebe763ff1b4a0cbe42136df2131829 [2022-11-22 01:59:40,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:59:40,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:59:40,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:40,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:59:40,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:59:40,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:40" (1/1) ... [2022-11-22 01:59:40,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ced0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:40, skipping insertion in model container [2022-11-22 01:59:40,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:40" (1/1) ... [2022-11-22 01:59:40,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:59:40,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:59:43,099 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2022-11-22 01:59:43,107 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2022-11-22 01:59:43,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:43,176 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:59:43,664 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315653,315666] [2022-11-22 01:59:43,664 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i[315798,315811] [2022-11-22 01:59:43,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:43,868 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:59:43,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43 WrapperNode [2022-11-22 01:59:43,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:43,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:43,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:59:43,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:59:43,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,166 INFO L138 Inliner]: procedures = 390, calls = 1871, calls flagged for inlining = 177, calls inlined = 157, statements flattened = 4314 [2022-11-22 01:59:44,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:44,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:59:44,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:59:44,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:59:44,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:59:44,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:59:44,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:59:44,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:59:44,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (1/1) ... [2022-11-22 01:59:44,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:44,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:44,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:59:44,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:59:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:59:44,640 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:59:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 01:59:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 01:59:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_89 [2022-11-22 01:59:44,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_89 [2022-11-22 01:59:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:59:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:59:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 01:59:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 01:59:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-22 01:59:44,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-22 01:59:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2022-11-22 01:59:44,643 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2022-11-22 01:59:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2022-11-22 01:59:44,643 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2022-11-22 01:59:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 01:59:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2022-11-22 01:59:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2022-11-22 01:59:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:59:44,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:59:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-22 01:59:44,645 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-22 01:59:44,646 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 01:59:44,646 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 01:59:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:59:44,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:59:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 01:59:44,648 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 01:59:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:59:44,648 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 01:59:44,648 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 01:59:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-22 01:59:44,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-22 01:59:44,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_103 [2022-11-22 01:59:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_103 [2022-11-22 01:59:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:59:44,650 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:59:44,650 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2022-11-22 01:59:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2022-11-22 01:59:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:59:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 01:59:44,651 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 01:59:44,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:59:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:59:44,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:59:44,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:59:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 01:59:44,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 01:59:44,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:59:44,654 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:59:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2022-11-22 01:59:44,654 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2022-11-22 01:59:44,654 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2022-11-22 01:59:44,654 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2022-11-22 01:59:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:59:44,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:59:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:59:44,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:59:44,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-22 01:59:44,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-22 01:59:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2022-11-22 01:59:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2022-11-22 01:59:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 01:59:44,656 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 01:59:44,656 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2022-11-22 01:59:44,657 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2022-11-22 01:59:44,657 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:59:44,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:59:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2022-11-22 01:59:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2022-11-22 01:59:44,658 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2022-11-22 01:59:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2022-11-22 01:59:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:59:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2022-11-22 01:59:44,660 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2022-11-22 01:59:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2022-11-22 01:59:44,660 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2022-11-22 01:59:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:59:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:59:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:59:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:59:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:59:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:59:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:59:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:59:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:59:44,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:59:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-22 01:59:44,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-22 01:59:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-22 01:59:44,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-22 01:59:44,665 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:59:44,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:59:44,666 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2022-11-22 01:59:44,666 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2022-11-22 01:59:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:59:44,667 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:59:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 01:59:44,667 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 01:59:44,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 01:59:44,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 01:59:44,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:59:44,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:59:44,669 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2022-11-22 01:59:44,670 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2022-11-22 01:59:44,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:59:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:59:44,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:59:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:59:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 01:59:44,676 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 01:59:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:59:44,678 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:59:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 01:59:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 01:59:44,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:59:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:59:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:59:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 01:59:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 01:59:44,686 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-22 01:59:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-22 01:59:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:59:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:59:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-22 01:59:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-22 01:59:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:59:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:59:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-22 01:59:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-22 01:59:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_pci_remove [2022-11-22 01:59:44,688 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_pci_remove [2022-11-22 01:59:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2022-11-22 01:59:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2022-11-22 01:59:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-22 01:59:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-22 01:59:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:59:44,689 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:59:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-22 01:59:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-22 01:59:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_hp100_private [2022-11-22 01:59:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_hp100_private [2022-11-22 01:59:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:59:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2022-11-22 01:59:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2022-11-22 01:59:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:59:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:59:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_hp100_private [2022-11-22 01:59:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_hp100_private [2022-11-22 01:59:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2022-11-22 01:59:44,692 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2022-11-22 01:59:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-22 01:59:44,692 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-22 01:59:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:59:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:59:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2022-11-22 01:59:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2022-11-22 01:59:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2022-11-22 01:59:44,693 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2022-11-22 01:59:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-22 01:59:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-22 01:59:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2022-11-22 01:59:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2022-11-22 01:59:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-22 01:59:44,694 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-22 01:59:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:59:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-22 01:59:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-22 01:59:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:59:44,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:59:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2022-11-22 01:59:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2022-11-22 01:59:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-22 01:59:44,696 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-22 01:59:45,506 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:59:45,512 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:59:45,947 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:59:49,057 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:59:49,058 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-22 01:59:49,322 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566-1: assume -9223372036854775808 <= #t~ret684#1 && #t~ret684#1 <= 9223372036854775807;havoc #t~ret684#1; [2022-11-22 01:59:49,322 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8566: SUMMARY for call #t~ret684#1 := schedule_timeout_interruptible(1); srcloc: null [2022-11-22 01:59:49,322 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616; [2022-11-22 01:59:49,323 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == (if 0 == ~tmp___4~7#1 then 0 else (if 2096896 == ~tmp___4~7#1 then ~tmp___4~7#1 else ~bitwiseAnd(~tmp___4~7#1, 2096896))) % 18446744073709551616); [2022-11-22 01:59:49,323 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2022-11-22 01:59:49,323 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L8570: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2022-11-22 01:59:49,484 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:59:50,749 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:59:50,750 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-22 01:59:50,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:50 BoogieIcfgContainer [2022-11-22 01:59:50,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:59:50,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:59:50,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:59:50,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:59:50,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:59:40" (1/3) ... [2022-11-22 01:59:50,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31913bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:50, skipping insertion in model container [2022-11-22 01:59:50,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:43" (2/3) ... [2022-11-22 01:59:50,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31913bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:50, skipping insertion in model container [2022-11-22 01:59:50,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:50" (3/3) ... [2022-11-22 01:59:50,764 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-hp-hp100.cil.i [2022-11-22 01:59:50,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:59:50,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:59:50,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:50,869 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;@6248afc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:50,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:59:50,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 1399 states, 751 states have (on average 1.315579227696405) internal successors, (988), 799 states have internal predecessors, (988), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) [2022-11-22 01:59:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 01:59:50,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:50,907 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:50,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:59:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash -451570498, now seen corresponding path program 1 times [2022-11-22 01:59:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:50,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956878468] [2022-11-22 01:59:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-22 01:59:51,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:51,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956878468] [2022-11-22 01:59:51,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956878468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:51,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:51,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:51,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251738498] [2022-11-22 01:59:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:51,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:51,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:51,867 INFO L87 Difference]: Start difference. First operand has 1399 states, 751 states have (on average 1.315579227696405) internal successors, (988), 799 states have internal predecessors, (988), 569 states have call successors, (569), 80 states have call predecessors, (569), 79 states have return successors, (564), 548 states have call predecessors, (564), 564 states have call successors, (564) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:59:53,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:53,917 INFO L93 Difference]: Finished difference Result 3996 states and 6127 transitions. [2022-11-22 01:59:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:53,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 102 [2022-11-22 01:59:53,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:53,976 INFO L225 Difference]: With dead ends: 3996 [2022-11-22 01:59:53,976 INFO L226 Difference]: Without dead ends: 2552 [2022-11-22 01:59:53,997 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 [2022-11-22 01:59:54,002 INFO L413 NwaCegarLoop]: 2633 mSDtfsCounter, 1881 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:54,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4519 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 01:59:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-11-22 01:59:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2548. [2022-11-22 01:59:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 1371 states have (on average 1.3078045222465353) internal successors, (1793), 1460 states have internal predecessors, (1793), 1030 states have call successors, (1030), 148 states have call predecessors, (1030), 146 states have return successors, (1037), 993 states have call predecessors, (1037), 1030 states have call successors, (1037) [2022-11-22 01:59:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3860 transitions. [2022-11-22 01:59:54,377 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3860 transitions. Word has length 102 [2022-11-22 01:59:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:54,379 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 3860 transitions. [2022-11-22 01:59:54,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 01:59:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3860 transitions. [2022-11-22 01:59:54,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-22 01:59:54,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:54,447 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:59:54,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:59:54,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1451141585, now seen corresponding path program 1 times [2022-11-22 01:59:54,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:54,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029025112] [2022-11-22 01:59:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:55,006 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-22 01:59:55,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:55,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029025112] [2022-11-22 01:59:55,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029025112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:55,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:55,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:55,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447511361] [2022-11-22 01:59:55,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:55,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:55,013 INFO L87 Difference]: Start difference. First operand 2548 states and 3860 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 01:59:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:56,954 INFO L93 Difference]: Finished difference Result 6602 states and 9979 transitions. [2022-11-22 01:59:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:56,955 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 152 [2022-11-22 01:59:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:56,987 INFO L225 Difference]: With dead ends: 6602 [2022-11-22 01:59:56,987 INFO L226 Difference]: Without dead ends: 4063 [2022-11-22 01:59:57,005 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 [2022-11-22 01:59:57,006 INFO L413 NwaCegarLoop]: 2249 mSDtfsCounter, 1217 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 4086 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:57,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 4086 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:59:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2022-11-22 01:59:57,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4059. [2022-11-22 01:59:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4059 states, 2214 states have (on average 1.3062330623306233) internal successors, (2892), 2355 states have internal predecessors, (2892), 1600 states have call successors, (1600), 246 states have call predecessors, (1600), 244 states have return successors, (1607), 1545 states have call predecessors, (1607), 1600 states have call successors, (1607) [2022-11-22 01:59:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4059 states to 4059 states and 6099 transitions. [2022-11-22 01:59:57,400 INFO L78 Accepts]: Start accepts. Automaton has 4059 states and 6099 transitions. Word has length 152 [2022-11-22 01:59:57,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:57,400 INFO L495 AbstractCegarLoop]: Abstraction has 4059 states and 6099 transitions. [2022-11-22 01:59:57,401 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, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 01:59:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4059 states and 6099 transitions. [2022-11-22 01:59:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-22 01:59:57,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:57,414 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:57,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:59:57,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:59:57,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 405139471, now seen corresponding path program 1 times [2022-11-22 01:59:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:57,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290330367] [2022-11-22 01:59:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-22 01:59:57,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:57,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290330367] [2022-11-22 01:59:57,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290330367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:57,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:57,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:57,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815432061] [2022-11-22 01:59:57,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:57,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:57,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:57,679 INFO L87 Difference]: Start difference. First operand 4059 states and 6099 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-22 01:59:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:59,652 INFO L93 Difference]: Finished difference Result 10783 states and 16146 transitions. [2022-11-22 01:59:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:59:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 201 [2022-11-22 01:59:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:59,707 INFO L225 Difference]: With dead ends: 10783 [2022-11-22 01:59:59,708 INFO L226 Difference]: Without dead ends: 6733 [2022-11-22 01:59:59,735 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 [2022-11-22 01:59:59,736 INFO L413 NwaCegarLoop]: 2369 mSDtfsCounter, 1859 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 4194 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:59,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 4194 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 01:59:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6733 states. [2022-11-22 02:00:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6733 to 6728. [2022-11-22 02:00:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6728 states, 3681 states have (on average 1.2961151860907363) internal successors, (4771), 3913 states have internal predecessors, (4771), 2625 states have call successors, (2625), 426 states have call predecessors, (2625), 421 states have return successors, (2640), 2531 states have call predecessors, (2640), 2625 states have call successors, (2640) [2022-11-22 02:00:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6728 states to 6728 states and 10036 transitions. [2022-11-22 02:00:00,348 INFO L78 Accepts]: Start accepts. Automaton has 6728 states and 10036 transitions. Word has length 201 [2022-11-22 02:00:00,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:00,349 INFO L495 AbstractCegarLoop]: Abstraction has 6728 states and 10036 transitions. [2022-11-22 02:00:00,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-22 02:00:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6728 states and 10036 transitions. [2022-11-22 02:00:00,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-22 02:00:00,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:00,363 INFO L195 NwaCegarLoop]: trace histogram [10, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-11-22 02:00:00,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:00:00,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:00,365 INFO L85 PathProgramCache]: Analyzing trace with hash 432299321, now seen corresponding path program 1 times [2022-11-22 02:00:00,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:00,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519885637] [2022-11-22 02:00:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:00,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-22 02:00:00,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:00,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519885637] [2022-11-22 02:00:00,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519885637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:00,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:00,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077136838] [2022-11-22 02:00:00,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:00,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:00,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:00,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:00,777 INFO L87 Difference]: Start difference. First operand 6728 states and 10036 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 02:00:04,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:00:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:04,823 INFO L93 Difference]: Finished difference Result 15371 states and 22887 transitions. [2022-11-22 02:00:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:04,824 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 196 [2022-11-22 02:00:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:04,899 INFO L225 Difference]: With dead ends: 15371 [2022-11-22 02:00:04,899 INFO L226 Difference]: Without dead ends: 8652 [2022-11-22 02:00:04,943 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 [2022-11-22 02:00:04,944 INFO L413 NwaCegarLoop]: 2984 mSDtfsCounter, 1227 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 4813 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:04,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 4813 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 522 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 02:00:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8652 states. [2022-11-22 02:00:05,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8652 to 8646. [2022-11-22 02:00:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8646 states, 4778 states have (on average 1.2925910422771034) internal successors, (6176), 5071 states have internal predecessors, (6176), 3304 states have call successors, (3304), 568 states have call predecessors, (3304), 563 states have return successors, (3319), 3190 states have call predecessors, (3319), 3304 states have call successors, (3319) [2022-11-22 02:00:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8646 states to 8646 states and 12799 transitions. [2022-11-22 02:00:05,721 INFO L78 Accepts]: Start accepts. Automaton has 8646 states and 12799 transitions. Word has length 196 [2022-11-22 02:00:05,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:05,721 INFO L495 AbstractCegarLoop]: Abstraction has 8646 states and 12799 transitions. [2022-11-22 02:00:05,722 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, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-22 02:00:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 8646 states and 12799 transitions. [2022-11-22 02:00:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-22 02:00:05,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:05,732 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:05,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:00:05,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1078987231, now seen corresponding path program 1 times [2022-11-22 02:00:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:05,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596328897] [2022-11-22 02:00:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-22 02:00:06,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:06,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596328897] [2022-11-22 02:00:06,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596328897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:06,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:06,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:06,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472065799] [2022-11-22 02:00:06,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:06,160 INFO L87 Difference]: Start difference. First operand 8646 states and 12799 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:00:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:08,526 INFO L93 Difference]: Finished difference Result 17337 states and 25669 transitions. [2022-11-22 02:00:08,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:08,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 258 [2022-11-22 02:00:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:08,623 INFO L225 Difference]: With dead ends: 17337 [2022-11-22 02:00:08,623 INFO L226 Difference]: Without dead ends: 8700 [2022-11-22 02:00:08,670 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 [2022-11-22 02:00:08,671 INFO L413 NwaCegarLoop]: 1871 mSDtfsCounter, 7 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:08,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3734 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 02:00:08,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8700 states. [2022-11-22 02:00:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8700 to 8652. [2022-11-22 02:00:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8652 states, 4784 states have (on average 1.2922240802675586) internal successors, (6182), 5077 states have internal predecessors, (6182), 3304 states have call successors, (3304), 568 states have call predecessors, (3304), 563 states have return successors, (3319), 3190 states have call predecessors, (3319), 3304 states have call successors, (3319) [2022-11-22 02:00:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12805 transitions. [2022-11-22 02:00:09,421 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12805 transitions. Word has length 258 [2022-11-22 02:00:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:09,423 INFO L495 AbstractCegarLoop]: Abstraction has 8652 states and 12805 transitions. [2022-11-22 02:00:09,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-22 02:00:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12805 transitions. [2022-11-22 02:00:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-22 02:00:09,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:09,437 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:09,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:00:09,438 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:09,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash 901579580, now seen corresponding path program 1 times [2022-11-22 02:00:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:09,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798530598] [2022-11-22 02:00:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-22 02:00:10,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:10,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798530598] [2022-11-22 02:00:10,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798530598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:10,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:10,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:10,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180787114] [2022-11-22 02:00:10,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:10,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:10,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:10,240 INFO L87 Difference]: Start difference. First operand 8652 states and 12805 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:00:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:12,291 INFO L93 Difference]: Finished difference Result 20858 states and 30981 transitions. [2022-11-22 02:00:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:12,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 263 [2022-11-22 02:00:12,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:12,421 INFO L225 Difference]: With dead ends: 20858 [2022-11-22 02:00:12,421 INFO L226 Difference]: Without dead ends: 12215 [2022-11-22 02:00:12,464 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 [2022-11-22 02:00:12,465 INFO L413 NwaCegarLoop]: 3254 mSDtfsCounter, 1839 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:12,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 4833 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:00:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2022-11-22 02:00:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 12209. [2022-11-22 02:00:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12209 states, 6668 states have (on average 1.2907918416316737) internal successors, (8607), 7096 states have internal predecessors, (8607), 4755 states have call successors, (4755), 790 states have call predecessors, (4755), 785 states have return successors, (4770), 4587 states have call predecessors, (4770), 4755 states have call successors, (4770) [2022-11-22 02:00:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12209 states to 12209 states and 18132 transitions. [2022-11-22 02:00:13,621 INFO L78 Accepts]: Start accepts. Automaton has 12209 states and 18132 transitions. Word has length 263 [2022-11-22 02:00:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:13,622 INFO L495 AbstractCegarLoop]: Abstraction has 12209 states and 18132 transitions. [2022-11-22 02:00:13,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-22 02:00:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 12209 states and 18132 transitions. [2022-11-22 02:00:13,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-22 02:00:13,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:13,634 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:13,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:00:13,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash 846680629, now seen corresponding path program 1 times [2022-11-22 02:00:13,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:13,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951702997] [2022-11-22 02:00:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:13,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2022-11-22 02:00:14,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:14,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951702997] [2022-11-22 02:00:14,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951702997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:14,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:14,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:14,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817965945] [2022-11-22 02:00:14,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:14,194 INFO L87 Difference]: Start difference. First operand 12209 states and 18132 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-22 02:00:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:16,492 INFO L93 Difference]: Finished difference Result 26341 states and 39088 transitions. [2022-11-22 02:00:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 305 [2022-11-22 02:00:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:16,677 INFO L225 Difference]: With dead ends: 26341 [2022-11-22 02:00:16,678 INFO L226 Difference]: Without dead ends: 14141 [2022-11-22 02:00:16,735 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 [2022-11-22 02:00:16,736 INFO L413 NwaCegarLoop]: 2870 mSDtfsCounter, 1237 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 4699 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:16,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 4699 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 02:00:16,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2022-11-22 02:00:17,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 14135. [2022-11-22 02:00:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14135 states, 7782 states have (on average 1.2907992803906452) internal successors, (10045), 8271 states have internal predecessors, (10045), 5426 states have call successors, (5426), 931 states have call predecessors, (5426), 926 states have return successors, (5441), 5238 states have call predecessors, (5441), 5426 states have call successors, (5441) [2022-11-22 02:00:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14135 states to 14135 states and 20912 transitions. [2022-11-22 02:00:18,004 INFO L78 Accepts]: Start accepts. Automaton has 14135 states and 20912 transitions. Word has length 305 [2022-11-22 02:00:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:18,005 INFO L495 AbstractCegarLoop]: Abstraction has 14135 states and 20912 transitions. [2022-11-22 02:00:18,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-22 02:00:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 14135 states and 20912 transitions. [2022-11-22 02:00:18,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-22 02:00:18,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:18,018 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:18,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:00:18,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:18,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1387090374, now seen corresponding path program 1 times [2022-11-22 02:00:18,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:18,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719202168] [2022-11-22 02:00:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:18,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-22 02:00:18,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:18,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719202168] [2022-11-22 02:00:18,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719202168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:18,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:18,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:18,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548391014] [2022-11-22 02:00:18,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:18,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:18,619 INFO L87 Difference]: Start difference. First operand 14135 states and 20912 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:21,732 INFO L93 Difference]: Finished difference Result 31038 states and 45900 transitions. [2022-11-22 02:00:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:00:21,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 342 [2022-11-22 02:00:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:21,838 INFO L225 Difference]: With dead ends: 31038 [2022-11-22 02:00:21,838 INFO L226 Difference]: Without dead ends: 16912 [2022-11-22 02:00:21,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:21,904 INFO L413 NwaCegarLoop]: 2958 mSDtfsCounter, 1324 mSDsluCounter, 7737 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 10695 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:21,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 10695 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:00:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16912 states. [2022-11-22 02:00:23,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16912 to 16898. [2022-11-22 02:00:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16898 states, 9311 states have (on average 1.2910535925249704) internal successors, (12021), 9894 states have internal predecessors, (12021), 6466 states have call successors, (6466), 1126 states have call predecessors, (6466), 1120 states have return successors, (6485), 6249 states have call predecessors, (6485), 6466 states have call successors, (6485) [2022-11-22 02:00:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16898 states to 16898 states and 24972 transitions. [2022-11-22 02:00:23,414 INFO L78 Accepts]: Start accepts. Automaton has 16898 states and 24972 transitions. Word has length 342 [2022-11-22 02:00:23,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:23,416 INFO L495 AbstractCegarLoop]: Abstraction has 16898 states and 24972 transitions. [2022-11-22 02:00:23,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 16898 states and 24972 transitions. [2022-11-22 02:00:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-22 02:00:23,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:23,444 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:23,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:00:23,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:23,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2062208243, now seen corresponding path program 1 times [2022-11-22 02:00:23,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:23,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116695073] [2022-11-22 02:00:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:23,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-22 02:00:23,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:23,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116695073] [2022-11-22 02:00:23,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116695073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:23,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:23,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:23,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704416197] [2022-11-22 02:00:23,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:23,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:23,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:23,900 INFO L87 Difference]: Start difference. First operand 16898 states and 24972 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:27,764 INFO L93 Difference]: Finished difference Result 35703 states and 52716 transitions. [2022-11-22 02:00:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:00:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 343 [2022-11-22 02:00:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:27,861 INFO L225 Difference]: With dead ends: 35703 [2022-11-22 02:00:27,861 INFO L226 Difference]: Without dead ends: 18814 [2022-11-22 02:00:27,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:27,932 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1221 mSDsluCounter, 7805 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 10793 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:27,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 10793 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 02:00:27,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18814 states. [2022-11-22 02:00:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18814 to 18800. [2022-11-22 02:00:29,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18800 states, 10393 states have (on average 1.2903877609929761) internal successors, (13411), 11037 states have internal predecessors, (13411), 7137 states have call successors, (7137), 1271 states have call predecessors, (7137), 1269 states have return successors, (7160), 6904 states have call predecessors, (7160), 7137 states have call successors, (7160) [2022-11-22 02:00:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18800 states to 18800 states and 27708 transitions. [2022-11-22 02:00:29,485 INFO L78 Accepts]: Start accepts. Automaton has 18800 states and 27708 transitions. Word has length 343 [2022-11-22 02:00:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:29,486 INFO L495 AbstractCegarLoop]: Abstraction has 18800 states and 27708 transitions. [2022-11-22 02:00:29,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 18800 states and 27708 transitions. [2022-11-22 02:00:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-22 02:00:29,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:29,501 INFO L195 NwaCegarLoop]: trace histogram [16, 14, 14, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:29,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:00:29,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1045737649, now seen corresponding path program 1 times [2022-11-22 02:00:29,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:29,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580390968] [2022-11-22 02:00:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:29,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-22 02:00:29,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:29,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580390968] [2022-11-22 02:00:29,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580390968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:29,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:29,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121274409] [2022-11-22 02:00:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:29,922 INFO L87 Difference]: Start difference. First operand 18800 states and 27708 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:33,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:33,008 INFO L93 Difference]: Finished difference Result 39479 states and 58172 transitions. [2022-11-22 02:00:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:00:33,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) Word has length 343 [2022-11-22 02:00:33,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:33,109 INFO L225 Difference]: With dead ends: 39479 [2022-11-22 02:00:33,110 INFO L226 Difference]: Without dead ends: 20688 [2022-11-22 02:00:33,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:33,196 INFO L413 NwaCegarLoop]: 2987 mSDtfsCounter, 1211 mSDsluCounter, 7809 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 10796 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:33,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 10796 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 02:00:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20688 states. [2022-11-22 02:00:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20688 to 20674. [2022-11-22 02:00:34,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20674 states, 11463 states have (on average 1.2901509203524384) internal successors, (14789), 12168 states have internal predecessors, (14789), 7804 states have call successors, (7804), 1408 states have call predecessors, (7804), 1406 states have return successors, (7827), 7551 states have call predecessors, (7827), 7804 states have call successors, (7827) [2022-11-22 02:00:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20674 states to 20674 states and 30420 transitions. [2022-11-22 02:00:34,537 INFO L78 Accepts]: Start accepts. Automaton has 20674 states and 30420 transitions. Word has length 343 [2022-11-22 02:00:34,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:34,538 INFO L495 AbstractCegarLoop]: Abstraction has 20674 states and 30420 transitions. [2022-11-22 02:00:34,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (43), 4 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:34,538 INFO L276 IsEmpty]: Start isEmpty. Operand 20674 states and 30420 transitions. [2022-11-22 02:00:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-22 02:00:34,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:34,555 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:34,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:00:34,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:34,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1803754193, now seen corresponding path program 1 times [2022-11-22 02:00:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:34,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428872667] [2022-11-22 02:00:34,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2022-11-22 02:00:35,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:35,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428872667] [2022-11-22 02:00:35,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428872667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:35,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:35,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513256828] [2022-11-22 02:00:35,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:35,148 INFO L87 Difference]: Start difference. First operand 20674 states and 30420 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:37,517 INFO L93 Difference]: Finished difference Result 43861 states and 64554 transitions. [2022-11-22 02:00:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 356 [2022-11-22 02:00:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:37,706 INFO L225 Difference]: With dead ends: 43861 [2022-11-22 02:00:37,707 INFO L226 Difference]: Without dead ends: 23196 [2022-11-22 02:00:37,765 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 [2022-11-22 02:00:37,766 INFO L413 NwaCegarLoop]: 3038 mSDtfsCounter, 1316 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 4870 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:37,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 4870 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:00:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-11-22 02:00:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 23190. [2022-11-22 02:00:38,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23190 states, 12861 states have (on average 1.2914236840059092) internal successors, (16609), 13659 states have internal predecessors, (16609), 8751 states have call successors, (8751), 1581 states have call predecessors, (8751), 1577 states have return successors, (8774), 8468 states have call predecessors, (8774), 8751 states have call successors, (8774) [2022-11-22 02:00:39,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 34134 transitions. [2022-11-22 02:00:39,026 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 34134 transitions. Word has length 356 [2022-11-22 02:00:39,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:39,028 INFO L495 AbstractCegarLoop]: Abstraction has 23190 states and 34134 transitions. [2022-11-22 02:00:39,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 34134 transitions. [2022-11-22 02:00:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-22 02:00:39,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:39,048 INFO L195 NwaCegarLoop]: trace histogram [17, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:39,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:00:39,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1045733942, now seen corresponding path program 1 times [2022-11-22 02:00:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:39,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431317951] [2022-11-22 02:00:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:39,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:39,362 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-11-22 02:00:39,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:39,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431317951] [2022-11-22 02:00:39,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431317951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:39,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:39,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474146163] [2022-11-22 02:00:39,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:39,365 INFO L87 Difference]: Start difference. First operand 23190 states and 34134 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:41,924 INFO L93 Difference]: Finished difference Result 48279 states and 71044 transitions. [2022-11-22 02:00:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:41,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 363 [2022-11-22 02:00:41,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:42,044 INFO L225 Difference]: With dead ends: 48279 [2022-11-22 02:00:42,044 INFO L226 Difference]: Without dead ends: 25098 [2022-11-22 02:00:42,136 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 [2022-11-22 02:00:42,137 INFO L413 NwaCegarLoop]: 2806 mSDtfsCounter, 1222 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:42,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 4641 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:00:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25098 states. [2022-11-22 02:00:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25098 to 25092. [2022-11-22 02:00:43,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25092 states, 13951 states have (on average 1.2913052827754283) internal successors, (18015), 14810 states have internal predecessors, (18015), 9422 states have call successors, (9422), 1722 states have call predecessors, (9422), 1718 states have return successors, (9445), 9119 states have call predecessors, (9445), 9422 states have call successors, (9445) [2022-11-22 02:00:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25092 states to 25092 states and 36882 transitions. [2022-11-22 02:00:43,723 INFO L78 Accepts]: Start accepts. Automaton has 25092 states and 36882 transitions. Word has length 363 [2022-11-22 02:00:43,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:43,724 INFO L495 AbstractCegarLoop]: Abstraction has 25092 states and 36882 transitions. [2022-11-22 02:00:43,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-22 02:00:43,724 INFO L276 IsEmpty]: Start isEmpty. Operand 25092 states and 36882 transitions. [2022-11-22 02:00:43,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-22 02:00:43,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:43,741 INFO L195 NwaCegarLoop]: trace histogram [17, 15, 15, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:43,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:00:43,742 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1578979194, now seen corresponding path program 1 times [2022-11-22 02:00:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:43,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415712582] [2022-11-22 02:00:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-22 02:00:44,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:44,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415712582] [2022-11-22 02:00:44,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415712582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:44,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:44,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:44,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567030301] [2022-11-22 02:00:44,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:44,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:44,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:44,106 INFO L87 Difference]: Start difference. First operand 25092 states and 36882 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-22 02:00:46,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:46,979 INFO L93 Difference]: Finished difference Result 52043 states and 76484 transitions. [2022-11-22 02:00:46,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:46,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 373 [2022-11-22 02:00:46,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:47,103 INFO L225 Difference]: With dead ends: 52043 [2022-11-22 02:00:47,103 INFO L226 Difference]: Without dead ends: 26960 [2022-11-22 02:00:47,198 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 [2022-11-22 02:00:47,199 INFO L413 NwaCegarLoop]: 2986 mSDtfsCounter, 1220 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4817 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:47,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 4817 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 02:00:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26960 states. [2022-11-22 02:00:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26960 to 26954. [2022-11-22 02:00:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26954 states, 15009 states have (on average 1.2912918915317477) internal successors, (19381), 15929 states have internal predecessors, (19381), 10089 states have call successors, (10089), 1859 states have call predecessors, (10089), 1855 states have return successors, (10112), 9766 states have call predecessors, (10112), 10089 states have call successors, (10112) [2022-11-22 02:00:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26954 states to 26954 states and 39582 transitions. [2022-11-22 02:00:48,751 INFO L78 Accepts]: Start accepts. Automaton has 26954 states and 39582 transitions. Word has length 373 [2022-11-22 02:00:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:48,753 INFO L495 AbstractCegarLoop]: Abstraction has 26954 states and 39582 transitions. [2022-11-22 02:00:48,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-22 02:00:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 26954 states and 39582 transitions. [2022-11-22 02:00:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-22 02:00:48,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:48,771 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:48,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:00:48,771 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash -364717524, now seen corresponding path program 1 times [2022-11-22 02:00:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329993443] [2022-11-22 02:00:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2022-11-22 02:00:49,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:49,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329993443] [2022-11-22 02:00:49,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329993443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:49,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:49,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:49,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610222947] [2022-11-22 02:00:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:49,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:49,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:49,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:49,202 INFO L87 Difference]: Start difference. First operand 26954 states and 39582 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:00:53,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:00:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:55,351 INFO L93 Difference]: Finished difference Result 56559 states and 83041 transitions. [2022-11-22 02:00:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:00:55,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 391 [2022-11-22 02:00:55,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:55,485 INFO L225 Difference]: With dead ends: 56559 [2022-11-22 02:00:55,486 INFO L226 Difference]: Without dead ends: 29614 [2022-11-22 02:00:55,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:55,584 INFO L413 NwaCegarLoop]: 2850 mSDtfsCounter, 1323 mSDsluCounter, 7521 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 10371 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:55,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 10371 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1089 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 02:00:55,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29614 states. [2022-11-22 02:00:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29614 to 27754. [2022-11-22 02:00:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27754 states, 15434 states have (on average 1.2915640793054295) internal successors, (19934), 16382 states have internal predecessors, (19934), 10401 states have call successors, (10401), 1918 states have call predecessors, (10401), 1918 states have return successors, (10428), 10074 states have call predecessors, (10428), 10401 states have call successors, (10428) [2022-11-22 02:00:56,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27754 states to 27754 states and 40763 transitions. [2022-11-22 02:00:57,000 INFO L78 Accepts]: Start accepts. Automaton has 27754 states and 40763 transitions. Word has length 391 [2022-11-22 02:00:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:57,001 INFO L495 AbstractCegarLoop]: Abstraction has 27754 states and 40763 transitions. [2022-11-22 02:00:57,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:00:57,002 INFO L276 IsEmpty]: Start isEmpty. Operand 27754 states and 40763 transitions. [2022-11-22 02:00:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-22 02:00:57,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:57,016 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:57,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:00:57,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1452861245, now seen corresponding path program 1 times [2022-11-22 02:00:57,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:57,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105632476] [2022-11-22 02:00:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2022-11-22 02:00:57,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:57,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105632476] [2022-11-22 02:00:57,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105632476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:57,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:57,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:00:57,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422157159] [2022-11-22 02:00:57,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:57,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:00:57,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:00:57,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:00:57,466 INFO L87 Difference]: Start difference. First operand 27754 states and 40763 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:01:02,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:01:03,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:03,761 INFO L93 Difference]: Finished difference Result 57419 states and 84298 transitions. [2022-11-22 02:01:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:01:03,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 392 [2022-11-22 02:01:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:03,877 INFO L225 Difference]: With dead ends: 57419 [2022-11-22 02:01:03,877 INFO L226 Difference]: Without dead ends: 29674 [2022-11-22 02:01:03,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:03,963 INFO L413 NwaCegarLoop]: 2988 mSDtfsCounter, 1220 mSDsluCounter, 7805 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 10793 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:03,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 10793 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1116 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-22 02:01:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29674 states. [2022-11-22 02:01:05,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29674 to 27794. [2022-11-22 02:01:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27794 states, 15458 states have (on average 1.2911113986285419) internal successors, (19958), 16406 states have internal predecessors, (19958), 10405 states have call successors, (10405), 1926 states have call predecessors, (10405), 1930 states have return successors, (10436), 10082 states have call predecessors, (10436), 10405 states have call successors, (10436) [2022-11-22 02:01:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27794 states to 27794 states and 40799 transitions. [2022-11-22 02:01:05,320 INFO L78 Accepts]: Start accepts. Automaton has 27794 states and 40799 transitions. Word has length 392 [2022-11-22 02:01:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:05,321 INFO L495 AbstractCegarLoop]: Abstraction has 27794 states and 40799 transitions. [2022-11-22 02:01:05,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:01:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 27794 states and 40799 transitions. [2022-11-22 02:01:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-11-22 02:01:05,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:05,336 INFO L195 NwaCegarLoop]: trace histogram [19, 14, 14, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:01:05,336 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash -734135643, now seen corresponding path program 1 times [2022-11-22 02:01:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306904729] [2022-11-22 02:01:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 127 proven. 26 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2022-11-22 02:01:06,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:06,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306904729] [2022-11-22 02:01:06,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306904729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:01:06,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551383201] [2022-11-22 02:01:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:06,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:01:06,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:01:06,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:01:06,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:01:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:07,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:01:07,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:01:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2022-11-22 02:01:07,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:01:07,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551383201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:07,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:01:07,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-22 02:01:07,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623871764] [2022-11-22 02:01:07,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:01:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:07,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:01:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:01:07,488 INFO L87 Difference]: Start difference. First operand 27794 states and 40799 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:01:11,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:11,097 INFO L93 Difference]: Finished difference Result 57487 states and 84390 transitions. [2022-11-22 02:01:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:01:11,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) Word has length 393 [2022-11-22 02:01:11,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:11,207 INFO L225 Difference]: With dead ends: 57487 [2022-11-22 02:01:11,208 INFO L226 Difference]: Without dead ends: 29702 [2022-11-22 02:01:11,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:01:11,302 INFO L413 NwaCegarLoop]: 3094 mSDtfsCounter, 1866 mSDsluCounter, 7740 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 10834 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:11,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 10834 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 02:01:11,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29702 states. [2022-11-22 02:01:12,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29702 to 29688. [2022-11-22 02:01:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29688 states, 16548 states have (on average 1.2919990331157845) internal successors, (21380), 17557 states have internal predecessors, (21380), 11072 states have call successors, (11072), 2063 states have call predecessors, (11072), 2067 states have return successors, (11103), 10729 states have call predecessors, (11103), 11072 states have call successors, (11103) [2022-11-22 02:01:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29688 states to 29688 states and 43555 transitions. [2022-11-22 02:01:12,677 INFO L78 Accepts]: Start accepts. Automaton has 29688 states and 43555 transitions. Word has length 393 [2022-11-22 02:01:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:12,677 INFO L495 AbstractCegarLoop]: Abstraction has 29688 states and 43555 transitions. [2022-11-22 02:01:12,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 3 states have call successors, (48), 3 states have call predecessors, (48), 4 states have return successors, (44), 4 states have call predecessors, (44), 3 states have call successors, (44) [2022-11-22 02:01:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand 29688 states and 43555 transitions. [2022-11-22 02:01:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-22 02:01:12,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:12,690 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:12,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:01:12,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fba5f3e-8ad0-4e77-b37e-e4693eb55e1e/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 02:01:12,895 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:12,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:12,895 INFO L85 PathProgramCache]: Analyzing trace with hash 285491370, now seen corresponding path program 1 times [2022-11-22 02:01:12,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:12,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311416673] [2022-11-22 02:01:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:12,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-11-22 02:01:13,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:13,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311416673] [2022-11-22 02:01:13,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311416673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:13,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:13,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:13,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623983231] [2022-11-22 02:01:13,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:13,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:13,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:13,384 INFO L87 Difference]: Start difference. First operand 29688 states and 43555 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:01:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:15,842 INFO L93 Difference]: Finished difference Result 62998 states and 92575 transitions. [2022-11-22 02:01:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:15,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 403 [2022-11-22 02:01:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:15,967 INFO L225 Difference]: With dead ends: 62998 [2022-11-22 02:01:15,967 INFO L226 Difference]: Without dead ends: 33319 [2022-11-22 02:01:16,194 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 [2022-11-22 02:01:16,195 INFO L413 NwaCegarLoop]: 2943 mSDtfsCounter, 1558 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 4776 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:16,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 4776 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:01:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33319 states. [2022-11-22 02:01:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33319 to 33313. [2022-11-22 02:01:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33313 states, 18453 states have (on average 1.29155150923969) internal successors, (23833), 19602 states have internal predecessors, (23833), 12569 states have call successors, (12569), 2288 states have call predecessors, (12569), 2290 states have return successors, (12602), 12168 states have call predecessors, (12602), 12569 states have call successors, (12602) [2022-11-22 02:01:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33313 states to 33313 states and 49004 transitions. [2022-11-22 02:01:17,805 INFO L78 Accepts]: Start accepts. Automaton has 33313 states and 49004 transitions. Word has length 403 [2022-11-22 02:01:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:17,806 INFO L495 AbstractCegarLoop]: Abstraction has 33313 states and 49004 transitions. [2022-11-22 02:01:17,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:01:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 33313 states and 49004 transitions. [2022-11-22 02:01:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-22 02:01:17,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:17,817 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:17,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:01:17,817 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1432055748, now seen corresponding path program 1 times [2022-11-22 02:01:17,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:17,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490309888] [2022-11-22 02:01:17,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:17,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2022-11-22 02:01:18,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:18,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490309888] [2022-11-22 02:01:18,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490309888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:18,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:18,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:01:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757640467] [2022-11-22 02:01:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:18,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:01:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:01:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:18,964 INFO L87 Difference]: Start difference. First operand 33313 states and 49004 transitions. Second operand has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-22 02:01:22,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:22,266 INFO L93 Difference]: Finished difference Result 66363 states and 98238 transitions. [2022-11-22 02:01:22,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:01:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 404 [2022-11-22 02:01:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:22,272 INFO L225 Difference]: With dead ends: 66363 [2022-11-22 02:01:22,272 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:01:22,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:01:22,505 INFO L413 NwaCegarLoop]: 1859 mSDtfsCounter, 6 mSDsluCounter, 5570 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7429 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:22,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7429 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 02:01:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:01:22,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:01:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:01:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:01:22,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 404 [2022-11-22 02:01:22,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:22,515 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:01:22,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-22 02:01:22,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:01:22,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:01:22,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:01:22,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:01:22,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.