./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b 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_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef3dcd2558e22d4d1b628613d50eb3ab943d89de0514f54496f8c445070b9e01 --- 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-8393723 [2022-11-19 08:18:22,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:18:22,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:18:22,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:18:22,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:18:22,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:18:22,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:18:22,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:18:22,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:18:22,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:18:22,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:18:22,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:18:22,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:18:22,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:18:22,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:18:22,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:18:22,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:18:22,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:18:22,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:18:22,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:18:22,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:18:22,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:18:22,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:18:22,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:18:22,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:18:22,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:18:22,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:18:22,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:18:22,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:18:22,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:18:22,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:18:22,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:18:22,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:18:22,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:18:22,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:18:22,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:18:22,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:18:22,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:18:22,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:18:22,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:18:22,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:18:22,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 08:18:22,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:18:22,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:18:22,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:18:22,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:18:22,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:18:22,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:18:22,392 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:18:22,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:18:22,392 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:18:22,392 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:18:22,393 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:18:22,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:18:22,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:18:22,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:18:22,394 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:18:22,394 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:18:22,394 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:18:22,395 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:18:22,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 08:18:22,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 08:18:22,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:18:22,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:18:22,398 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:18:22,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:18:22,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:18:22,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:18:22,398 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 08:18:22,399 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 08:18:22,399 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 08:18:22,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:18:22,399 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:18:22,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:18:22,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:18:22,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:18:22,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:18:22,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:18:22,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:18:22,401 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:18:22,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:18:22,401 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:18:22,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:18:22,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:18:22,402 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_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef3dcd2558e22d4d1b628613d50eb3ab943d89de0514f54496f8c445070b9e01 [2022-11-19 08:18:22,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:18:22,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:18:22,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:18:22,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:18:22,748 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:18:22,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i [2022-11-19 08:18:22,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/data/595c957f1/83a3185aba1c430589e2d96073c78f2d/FLAGea2c900e3 [2022-11-19 08:18:23,327 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:18:23,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i [2022-11-19 08:18:23,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/data/595c957f1/83a3185aba1c430589e2d96073c78f2d/FLAGea2c900e3 [2022-11-19 08:18:23,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/data/595c957f1/83a3185aba1c430589e2d96073c78f2d [2022-11-19 08:18:23,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:18:23,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:18:23,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:18:23,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:18:23,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:18:23,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:18:23" (1/1) ... [2022-11-19 08:18:23,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780e32ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:23, skipping insertion in model container [2022-11-19 08:18:23,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:18:23" (1/1) ... [2022-11-19 08:18:23,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:18:23,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:18:23,934 WARN L234 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_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i[299,312] [2022-11-19 08:18:23,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:18:23,982 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:18:23,994 WARN L234 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_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/sv-benchmarks/c/ldv-regression/mutex_lock_struct.c_1.i[299,312] [2022-11-19 08:18:24,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:18:24,022 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:18:24,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24 WrapperNode [2022-11-19 08:18:24,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:18:24,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:18:24,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:18:24,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:18:24,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,065 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 30 [2022-11-19 08:18:24,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:18:24,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:18:24,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:18:24,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:18:24,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,099 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:18:24,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:18:24,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:18:24,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:18:24,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (1/1) ... [2022-11-19 08:18:24,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:18:24,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:18:24,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:18:24,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-11-19 08:18:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-11-19 08:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:18:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:18:24,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:18:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:18:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:18:24,298 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:18:24,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:18:24,452 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:18:24,482 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:18:24,482 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:18:24,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:18:24 BoogieIcfgContainer [2022-11-19 08:18:24,485 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:18:24,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:18:24,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:18:24,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:18:24,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:18:23" (1/3) ... [2022-11-19 08:18:24,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2251b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:18:24, skipping insertion in model container [2022-11-19 08:18:24,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:18:24" (2/3) ... [2022-11-19 08:18:24,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c2251b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:18:24, skipping insertion in model container [2022-11-19 08:18:24,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:18:24" (3/3) ... [2022-11-19 08:18:24,497 INFO L112 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2022-11-19 08:18:24,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:18:24,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-19 08:18:24,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:18:24,587 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@15581b89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:18:24,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-19 08:18:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 10 states have (on average 2.4) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 08:18:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:18:24,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:24,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:18:24,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:24,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:24,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2549, now seen corresponding path program 1 times [2022-11-19 08:18:24,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:24,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329340758] [2022-11-19 08:18:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:24,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:24,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329340758] [2022-11-19 08:18:24,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329340758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:24,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:24,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:18:24,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830880019] [2022-11-19 08:18:24,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:24,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:24,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:24,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:24,860 INFO L87 Difference]: Start difference. First operand has 26 states, 10 states have (on average 2.4) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 08:18:24,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:24,950 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-11-19 08:18:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:24,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-11-19 08:18:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:24,959 INFO L225 Difference]: With dead ends: 24 [2022-11-19 08:18:24,960 INFO L226 Difference]: Without dead ends: 23 [2022-11-19 08:18:24,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:24,965 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:24,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:18:24,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-19 08:18:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-19 08:18:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 2.1) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-19 08:18:24,998 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 2 [2022-11-19 08:18:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:24,998 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-19 08:18:24,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 08:18:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-19 08:18:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:18:24,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:24,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:18:24,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:18:25,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:25,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2550, now seen corresponding path program 1 times [2022-11-19 08:18:25,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:25,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032648097] [2022-11-19 08:18:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:25,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:25,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:25,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032648097] [2022-11-19 08:18:25,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032648097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:25,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:25,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:18:25,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284600216] [2022-11-19 08:18:25,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:25,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:25,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:25,148 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 08:18:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:25,175 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-11-19 08:18:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:25,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-11-19 08:18:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:25,177 INFO L225 Difference]: With dead ends: 22 [2022-11-19 08:18:25,177 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 08:18:25,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:25,179 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:25,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 08:18:25,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-19 08:18:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 10 states have (on average 2.0) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-11-19 08:18:25,184 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 2 [2022-11-19 08:18:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:25,184 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-11-19 08:18:25,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 08:18:25,185 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-11-19 08:18:25,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:18:25,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:25,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:18:25,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:18:25,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:25,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:25,187 INFO L85 PathProgramCache]: Analyzing trace with hash 80332, now seen corresponding path program 1 times [2022-11-19 08:18:25,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:25,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606869230] [2022-11-19 08:18:25,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:25,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:25,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606869230] [2022-11-19 08:18:25,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606869230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:25,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:25,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:18:25,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580956279] [2022-11-19 08:18:25,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:25,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:25,370 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 08:18:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:25,416 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-11-19 08:18:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2022-11-19 08:18:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:25,420 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:18:25,420 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 08:18:25,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:25,422 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:25,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 11 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 08:18:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 08:18:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 10 states have (on average 1.8) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2022-11-19 08:18:25,434 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 3 [2022-11-19 08:18:25,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:25,435 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2022-11-19 08:18:25,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 08:18:25,435 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2022-11-19 08:18:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:18:25,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:25,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:18:25,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:18:25,437 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:25,441 INFO L85 PathProgramCache]: Analyzing trace with hash 80333, now seen corresponding path program 1 times [2022-11-19 08:18:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:25,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955372890] [2022-11-19 08:18:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:25,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:25,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955372890] [2022-11-19 08:18:25,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955372890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:25,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:25,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:18:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489838431] [2022-11-19 08:18:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:25,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:25,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:25,559 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 08:18:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:25,604 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-19 08:18:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:18:25,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) Word has length 3 [2022-11-19 08:18:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:25,606 INFO L225 Difference]: With dead ends: 18 [2022-11-19 08:18:25,606 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 08:18:25,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:25,618 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:25,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:25,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 08:18:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 08:18:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.6) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-19 08:18:25,628 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 3 [2022-11-19 08:18:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:25,629 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-19 08:18:25,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 08:18:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-19 08:18:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:18:25,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:25,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:18:25,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:18:25,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errErr0ASSERT_VIOLATIONMEMORY_LEAK === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:25,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1901810696, now seen corresponding path program 1 times [2022-11-19 08:18:25,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:25,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143605647] [2022-11-19 08:18:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:25,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:25,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143605647] [2022-11-19 08:18:25,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143605647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:25,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:25,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:25,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129988417] [2022-11-19 08:18:25,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:25,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:25,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:25,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:25,745 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:25,772 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2022-11-19 08:18:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:25,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 08:18:25,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:25,774 INFO L225 Difference]: With dead ends: 17 [2022-11-19 08:18:25,774 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 08:18:25,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:25,775 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:25,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 29 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 08:18:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-19 08:18:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.5) internal successors, (15), 15 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2022-11-19 08:18:25,779 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 6 [2022-11-19 08:18:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:25,780 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2022-11-19 08:18:25,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2022-11-19 08:18:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:18:25,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:25,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:18:25,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:18:25,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1901807539, now seen corresponding path program 1 times [2022-11-19 08:18:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749595538] [2022-11-19 08:18:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:25,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:25,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:25,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749595538] [2022-11-19 08:18:25,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749595538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:25,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:25,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710843553] [2022-11-19 08:18:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:25,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:25,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:25,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:25,843 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-19 08:18:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:25,880 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2022-11-19 08:18:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2022-11-19 08:18:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:25,881 INFO L225 Difference]: With dead ends: 15 [2022-11-19 08:18:25,881 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 08:18:25,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:25,883 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:25,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:25,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 08:18:25,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 08:18:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 13 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2022-11-19 08:18:25,887 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 6 [2022-11-19 08:18:25,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:25,888 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2022-11-19 08:18:25,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-19 08:18:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2022-11-19 08:18:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:18:25,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:25,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:18:25,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:18:25,890 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1901807538, now seen corresponding path program 1 times [2022-11-19 08:18:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:25,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454108759] [2022-11-19 08:18:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:26,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454108759] [2022-11-19 08:18:26,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454108759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:26,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:26,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:18:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134119379] [2022-11-19 08:18:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:26,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:18:26,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:18:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:18:26,237 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-19 08:18:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:26,304 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-11-19 08:18:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:18:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) Word has length 6 [2022-11-19 08:18:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:26,306 INFO L225 Difference]: With dead ends: 13 [2022-11-19 08:18:26,306 INFO L226 Difference]: Without dead ends: 13 [2022-11-19 08:18:26,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:18:26,310 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:26,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-19 08:18:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-19 08:18:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-11-19 08:18:26,326 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2022-11-19 08:18:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:26,327 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-11-19 08:18:26,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2022-11-19 08:18:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-11-19 08:18:26,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:18:26,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:26,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:26,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:18:26,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errErr0ASSERT_VIOLATIONMEMORY_LEAK === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:26,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:26,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1834792348, now seen corresponding path program 1 times [2022-11-19 08:18:26,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:26,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230757375] [2022-11-19 08:18:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:26,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:26,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:26,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230757375] [2022-11-19 08:18:26,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230757375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:26,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:26,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:18:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752379393] [2022-11-19 08:18:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:26,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:18:26,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:18:26,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:26,552 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:26,610 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2022-11-19 08:18:26,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:18:26,611 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 08:18:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:26,613 INFO L225 Difference]: With dead ends: 10 [2022-11-19 08:18:26,613 INFO L226 Difference]: Without dead ends: 10 [2022-11-19 08:18:26,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:18:26,621 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:26,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-19 08:18:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-19 08:18:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 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) [2022-11-19 08:18:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2022-11-19 08:18:26,628 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2022-11-19 08:18:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:26,629 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2022-11-19 08:18:26,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:18:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2022-11-19 08:18:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:18:26,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:26,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:26,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:18:26,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [errErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-11-19 08:18:26,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1834789362, now seen corresponding path program 1 times [2022-11-19 08:18:26,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:26,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49503014] [2022-11-19 08:18:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:26,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:18:26,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:26,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49503014] [2022-11-19 08:18:26,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49503014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:26,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:26,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:18:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215664230] [2022-11-19 08:18:26,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:26,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:18:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:18:26,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:26,743 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-19 08:18:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:26,758 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2022-11-19 08:18:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:18:26,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-19 08:18:26,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:26,759 INFO L225 Difference]: With dead ends: 9 [2022-11-19 08:18:26,760 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:18:26,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:18:26,762 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:26,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:18:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:18:26,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:18:26,764 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) [2022-11-19 08:18:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:18:26,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2022-11-19 08:18:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:26,764 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:18:26,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-19 08:18:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:18:26,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:18:26,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errErr0ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-11-19 08:18:26,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-11-19 08:18:26,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-11-19 08:18:26,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-11-19 08:18:26,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-11-19 08:18:26,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-11-19 08:18:26,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-11-19 08:18:26,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-11-19 08:18:26,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-11-19 08:18:26,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-11-19 08:18:26,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 12 remaining) [2022-11-19 08:18:26,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2022-11-19 08:18:26,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:18:26,775 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:26,778 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:18:26,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:18:26 BoogieIcfgContainer [2022-11-19 08:18:26,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:18:26,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:18:26,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:18:26,783 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:18:26,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:18:24" (3/4) ... [2022-11-19 08:18:26,787 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:18:26,798 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure err [2022-11-19 08:18:26,803 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-19 08:18:26,803 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-19 08:18:26,804 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 08:18:26,804 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 08:18:26,838 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:18:26,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:18:26,839 INFO L158 Benchmark]: Toolchain (without parser) took 3135.03ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 76.3MB in the beginning and 78.7MB in the end (delta: -2.4MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-11-19 08:18:26,839 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 114.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:18:26,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.64ms. Allocated memory is still 113.2MB. Free memory was 76.1MB in the beginning and 89.6MB in the end (delta: -13.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:18:26,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.29ms. Allocated memory is still 113.2MB. Free memory was 89.6MB in the beginning and 88.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:18:26,840 INFO L158 Benchmark]: Boogie Preprocessor took 36.12ms. Allocated memory is still 113.2MB. Free memory was 88.0MB in the beginning and 87.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:18:26,840 INFO L158 Benchmark]: RCFGBuilder took 382.53ms. Allocated memory is still 113.2MB. Free memory was 87.0MB in the beginning and 74.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:18:26,841 INFO L158 Benchmark]: TraceAbstraction took 2293.51ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 74.4MB in the beginning and 82.0MB in the end (delta: -7.6MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-11-19 08:18:26,842 INFO L158 Benchmark]: Witness Printer took 55.99ms. Allocated memory is still 151.0MB. Free memory was 82.0MB in the beginning and 78.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 08:18:26,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory was 92.4MB in the beginning and 92.3MB in the end (delta: 114.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.64ms. Allocated memory is still 113.2MB. Free memory was 76.1MB in the beginning and 89.6MB in the end (delta: -13.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.29ms. Allocated memory is still 113.2MB. Free memory was 89.6MB in the beginning and 88.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.12ms. Allocated memory is still 113.2MB. Free memory was 88.0MB in the beginning and 87.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 382.53ms. Allocated memory is still 113.2MB. Free memory was 87.0MB in the beginning and 74.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2293.51ms. Allocated memory was 113.2MB in the beginning and 151.0MB in the end (delta: 37.7MB). Free memory was 74.4MB in the beginning and 82.0MB in the end (delta: -7.6MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Witness Printer took 55.99ms. Allocated memory is still 151.0MB. Free memory was 82.0MB in the beginning and 78.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 33]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 70 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-19 08:18:26,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d54fcb8b-dd59-4d20-afb7-a5c4985fc09b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE