./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --- 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-2329fc7 [2022-12-13 16:33:12,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:33:12,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:33:12,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:33:12,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:33:12,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:33:12,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:33:12,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:33:12,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:33:12,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:33:12,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:33:12,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:33:12,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:33:12,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:33:12,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:33:12,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:33:12,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:33:12,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:33:12,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:33:12,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:33:12,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:33:12,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:33:12,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:33:12,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:33:12,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:33:12,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:33:12,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:33:12,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:33:12,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:33:12,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:33:12,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:33:12,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:33:12,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:33:12,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:33:12,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:33:12,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:33:12,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:33:12,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:33:12,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:33:12,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:33:12,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:33:12,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 16:33:12,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:33:12,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:33:12,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:33:12,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:33:12,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:33:12,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:33:12,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:33:12,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:33:12,973 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:33:12,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:33:12,973 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:33:12,973 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:33:12,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:33:12,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:33:12,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:33:12,973 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 16:33:12,974 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 16:33:12,974 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 16:33:12,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:33:12,974 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:33:12,974 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:33:12,974 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:33:12,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:33:12,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:33:12,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:33:12,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:33:12,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:33:12,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:33:12,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:33:12,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:33:12,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:33:12,976 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:33:12,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:33:12,976 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:33:12,976 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 [2022-12-13 16:33:13,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:33:13,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:33:13,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:33:13,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:33:13,203 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:33:13,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/lamport.i [2022-12-13 16:33:15,759 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:33:15,938 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:33:15,939 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/sv-benchmarks/c/pthread-atomic/lamport.i [2022-12-13 16:33:15,947 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/data/e9bff1d00/ea386a58d92c488da35f0315b1ded5a7/FLAG6392f5279 [2022-12-13 16:33:15,958 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/data/e9bff1d00/ea386a58d92c488da35f0315b1ded5a7 [2022-12-13 16:33:15,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:33:15,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:33:15,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:33:15,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:33:15,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:33:15,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:33:15" (1/1) ... [2022-12-13 16:33:15,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ab554a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:15, skipping insertion in model container [2022-12-13 16:33:15,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:33:15" (1/1) ... [2022-12-13 16:33:15,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:33:16,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:33:16,137 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 16:33:16,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,246 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,253 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,254 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,256 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-12-13 16:33:16,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,261 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,264 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,269 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,270 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-12-13 16:33:16,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:33:16,284 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:33:16,295 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 16:33:16,317 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,322 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,324 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,325 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,326 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,328 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-12-13 16:33:16,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,334 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,335 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,338 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,339 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-12-13 16:33:16,339 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 16:33:16,340 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 16:33:16,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:33:16,368 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:33:16,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16 WrapperNode [2022-12-13 16:33:16,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:33:16,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:33:16,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:33:16,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:33:16,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,414 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-12-13 16:33:16,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:33:16,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:33:16,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:33:16,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:33:16,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,443 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:33:16,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:33:16,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:33:16,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:33:16,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (1/1) ... [2022-12-13 16:33:16,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:33:16,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:33:16,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:33:16,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:33:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:33:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 16:33:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 16:33:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 16:33:16,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 16:33:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:33:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 16:33:16,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:33:16,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:33:16,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:33:16,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:33:16,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 16:33:16,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:33:16,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:33:16,511 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:33:16,610 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:33:16,611 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:33:16,800 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:33:16,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:33:16,808 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 16:33:16,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:33:16 BoogieIcfgContainer [2022-12-13 16:33:16,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:33:16,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:33:16,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:33:16,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:33:16,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:33:15" (1/3) ... [2022-12-13 16:33:16,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc4cce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:33:16, skipping insertion in model container [2022-12-13 16:33:16,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:33:16" (2/3) ... [2022-12-13 16:33:16,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc4cce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:33:16, skipping insertion in model container [2022-12-13 16:33:16,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:33:16" (3/3) ... [2022-12-13 16:33:16,816 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2022-12-13 16:33:16,830 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:33:16,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 16:33:16,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:33:16,888 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 16:33:16,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 145 transitions, 306 flow [2022-12-13 16:33:16,956 INFO L130 PetriNetUnfolder]: 24/143 cut-off events. [2022-12-13 16:33:16,956 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:33:16,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 143 events. 24/143 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 299 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2022-12-13 16:33:16,961 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 145 transitions, 306 flow [2022-12-13 16:33:16,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 138 transitions, 288 flow [2022-12-13 16:33:16,967 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:33:16,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 138 transitions, 288 flow [2022-12-13 16:33:16,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 138 transitions, 288 flow [2022-12-13 16:33:16,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 138 transitions, 288 flow [2022-12-13 16:33:16,998 INFO L130 PetriNetUnfolder]: 24/138 cut-off events. [2022-12-13 16:33:16,998 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:33:17,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 24/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 297 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2022-12-13 16:33:17,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 5676 [2022-12-13 16:33:18,848 INFO L134 LiptonReduction]: Checked pairs total: 16119 [2022-12-13 16:33:18,849 INFO L136 LiptonReduction]: Total number of compositions: 99 [2022-12-13 16:33:18,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:33:18,863 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=PETRI_NET, 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;@7df6804d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:33:18,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 16:33:18,864 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 16:33:18,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:33:18,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:18,865 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 16:33:18,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash 607, now seen corresponding path program 1 times [2022-12-13 16:33:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:18,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829739847] [2022-12-13 16:33:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:18,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:18,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:18,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829739847] [2022-12-13 16:33:18,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829739847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:18,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:18,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 16:33:18,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350193192] [2022-12-13 16:33:18,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:18,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:33:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:33:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:33:19,006 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 244 [2022-12-13 16:33:19,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 158 flow. Second operand has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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) [2022-12-13 16:33:19,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:19,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 244 [2022-12-13 16:33:19,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:19,265 INFO L130 PetriNetUnfolder]: 1891/3041 cut-off events. [2022-12-13 16:33:19,265 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-13 16:33:19,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 3041 events. 1891/3041 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16660 event pairs, 1072 based on Foata normal form. 44/1864 useless extension candidates. Maximal degree in co-relation 5430. Up to 2638 conditions per place. [2022-12-13 16:33:19,286 INFO L137 encePairwiseOnDemand]: 237/244 looper letters, 48 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2022-12-13 16:33:19,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 240 flow [2022-12-13 16:33:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:33:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 16:33:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 313 transitions. [2022-12-13 16:33:19,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6413934426229508 [2022-12-13 16:33:19,300 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 313 transitions. [2022-12-13 16:33:19,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 313 transitions. [2022-12-13 16:33:19,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:19,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 313 transitions. [2022-12-13 16:33:19,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 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) [2022-12-13 16:33:19,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2022-12-13 16:33:19,312 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 244.0) internal successors, (732), 3 states have internal predecessors, (732), 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) [2022-12-13 16:33:19,314 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 158 flow. Second operand 2 states and 313 transitions. [2022-12-13 16:33:19,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 240 flow [2022-12-13 16:33:19,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 16:33:19,321 INFO L231 Difference]: Finished difference. Result has 58 places, 66 transitions, 136 flow [2022-12-13 16:33:19,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=66} [2022-12-13 16:33:19,326 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2022-12-13 16:33:19,326 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 66 transitions, 136 flow [2022-12-13 16:33:19,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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) [2022-12-13 16:33:19,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:19,327 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:33:19,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:33:19,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:19,328 INFO L85 PathProgramCache]: Analyzing trace with hash 600544, now seen corresponding path program 1 times [2022-12-13 16:33:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:19,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487669223] [2022-12-13 16:33:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:19,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487669223] [2022-12-13 16:33:19,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487669223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:19,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:19,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:33:19,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816863239] [2022-12-13 16:33:19,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:19,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:19,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:19,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 244 [2022-12-13 16:33:19,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-12-13 16:33:19,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:19,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 244 [2022-12-13 16:33:19,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:19,716 INFO L130 PetriNetUnfolder]: 1854/2972 cut-off events. [2022-12-13 16:33:19,716 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:33:19,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 2972 events. 1854/2972 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16224 event pairs, 1049 based on Foata normal form. 0/1789 useless extension candidates. Maximal degree in co-relation 5560. Up to 2574 conditions per place. [2022-12-13 16:33:19,740 INFO L137 encePairwiseOnDemand]: 240/244 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2022-12-13 16:33:19,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 224 flow [2022-12-13 16:33:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:19,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2022-12-13 16:33:19,744 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5573770491803278 [2022-12-13 16:33:19,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2022-12-13 16:33:19,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2022-12-13 16:33:19,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:19,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2022-12-13 16:33:19,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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) [2022-12-13 16:33:19,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:19,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:19,753 INFO L175 Difference]: Start difference. First operand has 58 places, 66 transitions, 136 flow. Second operand 3 states and 408 transitions. [2022-12-13 16:33:19,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 224 flow [2022-12-13 16:33:19,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:33:19,755 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 136 flow [2022-12-13 16:33:19,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2022-12-13 16:33:19,756 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2022-12-13 16:33:19,757 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 136 flow [2022-12-13 16:33:19,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-12-13 16:33:19,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:19,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:33:19,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:33:19,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 600543, now seen corresponding path program 1 times [2022-12-13 16:33:19,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:19,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697275135] [2022-12-13 16:33:19,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:19,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:19,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697275135] [2022-12-13 16:33:19,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697275135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:19,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:19,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:33:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252321918] [2022-12-13 16:33:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:19,867 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 244 [2022-12-13 16:33:19,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2022-12-13 16:33:19,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:19,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 244 [2022-12-13 16:33:19,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:20,037 INFO L130 PetriNetUnfolder]: 1817/2903 cut-off events. [2022-12-13 16:33:20,037 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:33:20,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 2903 events. 1817/2903 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15801 event pairs, 1026 based on Foata normal form. 0/1758 useless extension candidates. Maximal degree in co-relation 5431. Up to 2512 conditions per place. [2022-12-13 16:33:20,050 INFO L137 encePairwiseOnDemand]: 240/244 looper letters, 42 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2022-12-13 16:33:20,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 62 transitions, 220 flow [2022-12-13 16:33:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2022-12-13 16:33:20,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5710382513661202 [2022-12-13 16:33:20,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2022-12-13 16:33:20,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2022-12-13 16:33:20,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:20,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2022-12-13 16:33:20,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2022-12-13 16:33:20,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,054 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 136 flow. Second operand 3 states and 418 transitions. [2022-12-13 16:33:20,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 62 transitions, 220 flow [2022-12-13 16:33:20,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:33:20,055 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 132 flow [2022-12-13 16:33:20,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2022-12-13 16:33:20,056 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2022-12-13 16:33:20,056 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 132 flow [2022-12-13 16:33:20,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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) [2022-12-13 16:33:20,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:20,057 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:33:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:33:20,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:20,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:20,057 INFO L85 PathProgramCache]: Analyzing trace with hash 577136207, now seen corresponding path program 1 times [2022-12-13 16:33:20,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:20,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325463511] [2022-12-13 16:33:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:20,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:20,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325463511] [2022-12-13 16:33:20,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325463511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:20,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:20,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:33:20,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982405669] [2022-12-13 16:33:20,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:20,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:33:20,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:20,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:33:20,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:33:20,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 244 [2022-12-13 16:33:20,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 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) [2022-12-13 16:33:20,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:20,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 244 [2022-12-13 16:33:20,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:20,373 INFO L130 PetriNetUnfolder]: 1341/2173 cut-off events. [2022-12-13 16:33:20,373 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:33:20,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4068 conditions, 2173 events. 1341/2173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11404 event pairs, 741 based on Foata normal form. 0/1388 useless extension candidates. Maximal degree in co-relation 4064. Up to 1875 conditions per place. [2022-12-13 16:33:20,385 INFO L137 encePairwiseOnDemand]: 241/244 looper letters, 41 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2022-12-13 16:33:20,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 216 flow [2022-12-13 16:33:20,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2022-12-13 16:33:20,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601092896174863 [2022-12-13 16:33:20,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2022-12-13 16:33:20,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2022-12-13 16:33:20,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:20,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2022-12-13 16:33:20,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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) [2022-12-13 16:33:20,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,391 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 132 flow. Second operand 3 states and 410 transitions. [2022-12-13 16:33:20,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 216 flow [2022-12-13 16:33:20,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:33:20,393 INFO L231 Difference]: Finished difference. Result has 55 places, 61 transitions, 130 flow [2022-12-13 16:33:20,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=55, PETRI_TRANSITIONS=61} [2022-12-13 16:33:20,394 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2022-12-13 16:33:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 61 transitions, 130 flow [2022-12-13 16:33:20,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 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) [2022-12-13 16:33:20,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:20,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:33:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:33:20,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:20,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash 577136206, now seen corresponding path program 1 times [2022-12-13 16:33:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:20,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626422355] [2022-12-13 16:33:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:20,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:20,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626422355] [2022-12-13 16:33:20,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626422355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:20,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:20,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:33:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225756116] [2022-12-13 16:33:20,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:33:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:33:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:33:20,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 244 [2022-12-13 16:33:20,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 61 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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) [2022-12-13 16:33:20,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:20,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 244 [2022-12-13 16:33:20,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:20,616 INFO L130 PetriNetUnfolder]: 865/1443 cut-off events. [2022-12-13 16:33:20,617 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:33:20,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 1443 events. 865/1443 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7170 event pairs, 456 based on Foata normal form. 0/1018 useless extension candidates. Maximal degree in co-relation 2697. Up to 1238 conditions per place. [2022-12-13 16:33:20,620 INFO L137 encePairwiseOnDemand]: 241/244 looper letters, 40 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-12-13 16:33:20,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 212 flow [2022-12-13 16:33:20,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-12-13 16:33:20,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5341530054644809 [2022-12-13 16:33:20,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-12-13 16:33:20,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-12-13 16:33:20,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:20,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-12-13 16:33:20,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2022-12-13 16:33:20,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,625 INFO L175 Difference]: Start difference. First operand has 55 places, 61 transitions, 130 flow. Second operand 3 states and 391 transitions. [2022-12-13 16:33:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 212 flow [2022-12-13 16:33:20,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:33:20,626 INFO L231 Difference]: Finished difference. Result has 54 places, 60 transitions, 128 flow [2022-12-13 16:33:20,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=60} [2022-12-13 16:33:20,627 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2022-12-13 16:33:20,627 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 60 transitions, 128 flow [2022-12-13 16:33:20,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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) [2022-12-13 16:33:20,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:20,627 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:20,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:33:20,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash -657556922, now seen corresponding path program 1 times [2022-12-13 16:33:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:20,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347734255] [2022-12-13 16:33:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:20,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:20,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347734255] [2022-12-13 16:33:20,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347734255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:20,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:20,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:33:20,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82287249] [2022-12-13 16:33:20,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:20,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:20,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:20,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:20,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:20,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 244 [2022-12-13 16:33:20,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 60 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2022-12-13 16:33:20,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:20,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 244 [2022-12-13 16:33:20,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:20,795 INFO L130 PetriNetUnfolder]: 909/1559 cut-off events. [2022-12-13 16:33:20,796 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 16:33:20,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 1559 events. 909/1559 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7921 event pairs, 336 based on Foata normal form. 0/1144 useless extension candidates. Maximal degree in co-relation 2903. Up to 969 conditions per place. [2022-12-13 16:33:20,804 INFO L137 encePairwiseOnDemand]: 237/244 looper letters, 61 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2022-12-13 16:33:20,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 310 flow [2022-12-13 16:33:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2022-12-13 16:33:20,806 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6010928961748634 [2022-12-13 16:33:20,806 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2022-12-13 16:33:20,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2022-12-13 16:33:20,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:20,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2022-12-13 16:33:20,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2022-12-13 16:33:20,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:20,810 INFO L175 Difference]: Start difference. First operand has 54 places, 60 transitions, 128 flow. Second operand 3 states and 440 transitions. [2022-12-13 16:33:20,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 310 flow [2022-12-13 16:33:20,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:33:20,812 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 156 flow [2022-12-13 16:33:20,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2022-12-13 16:33:20,812 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2022-12-13 16:33:20,812 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 156 flow [2022-12-13 16:33:20,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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) [2022-12-13 16:33:20,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:20,813 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:20,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:33:20,813 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1375074588, now seen corresponding path program 1 times [2022-12-13 16:33:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:20,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198064381] [2022-12-13 16:33:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:20,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:20,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198064381] [2022-12-13 16:33:20,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198064381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:20,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:20,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:33:20,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503323675] [2022-12-13 16:33:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:20,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:20,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:20,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:20,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 244 [2022-12-13 16:33:20,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2022-12-13 16:33:20,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:20,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 244 [2022-12-13 16:33:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:20,994 INFO L130 PetriNetUnfolder]: 805/1403 cut-off events. [2022-12-13 16:33:20,995 INFO L131 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2022-12-13 16:33:20,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1403 events. 805/1403 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7043 event pairs, 345 based on Foata normal form. 34/1132 useless extension candidates. Maximal degree in co-relation 2792. Up to 983 conditions per place. [2022-12-13 16:33:21,003 INFO L137 encePairwiseOnDemand]: 237/244 looper letters, 59 selfloop transitions, 4 changer transitions 1/81 dead transitions. [2022-12-13 16:33:21,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 324 flow [2022-12-13 16:33:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:21,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2022-12-13 16:33:21,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5997267759562842 [2022-12-13 16:33:21,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2022-12-13 16:33:21,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2022-12-13 16:33:21,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:21,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2022-12-13 16:33:21,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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) [2022-12-13 16:33:21,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:21,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:21,006 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 156 flow. Second operand 3 states and 439 transitions. [2022-12-13 16:33:21,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 324 flow [2022-12-13 16:33:21,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:33:21,009 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 160 flow [2022-12-13 16:33:21,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2022-12-13 16:33:21,010 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -6 predicate places. [2022-12-13 16:33:21,010 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 160 flow [2022-12-13 16:33:21,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2022-12-13 16:33:21,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:21,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:33:21,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash 65623279, now seen corresponding path program 1 times [2022-12-13 16:33:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383043382] [2022-12-13 16:33:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383043382] [2022-12-13 16:33:21,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383043382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:21,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:21,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:33:21,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522055442] [2022-12-13 16:33:21,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:21,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:21,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:21,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 244 [2022-12-13 16:33:21,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2022-12-13 16:33:21,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:21,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 244 [2022-12-13 16:33:21,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:21,265 INFO L130 PetriNetUnfolder]: 1602/2711 cut-off events. [2022-12-13 16:33:21,265 INFO L131 PetriNetUnfolder]: For 637/637 co-relation queries the response was YES. [2022-12-13 16:33:21,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5532 conditions, 2711 events. 1602/2711 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14790 event pairs, 419 based on Foata normal form. 0/2212 useless extension candidates. Maximal degree in co-relation 5526. Up to 1377 conditions per place. [2022-12-13 16:33:21,272 INFO L137 encePairwiseOnDemand]: 239/244 looper letters, 81 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2022-12-13 16:33:21,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 99 transitions, 437 flow [2022-12-13 16:33:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2022-12-13 16:33:21,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6202185792349727 [2022-12-13 16:33:21,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2022-12-13 16:33:21,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2022-12-13 16:33:21,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:21,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2022-12-13 16:33:21,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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) [2022-12-13 16:33:21,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:21,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:21,276 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 160 flow. Second operand 3 states and 454 transitions. [2022-12-13 16:33:21,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 99 transitions, 437 flow [2022-12-13 16:33:21,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:33:21,279 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 190 flow [2022-12-13 16:33:21,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2022-12-13 16:33:21,279 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2022-12-13 16:33:21,280 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 190 flow [2022-12-13 16:33:21,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2022-12-13 16:33:21,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:21,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:21,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:33:21,280 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:21,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash 17899969, now seen corresponding path program 2 times [2022-12-13 16:33:21,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:21,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596168779] [2022-12-13 16:33:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:21,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:21,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:21,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596168779] [2022-12-13 16:33:21,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596168779] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:21,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:21,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:33:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800409255] [2022-12-13 16:33:21,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:21,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:33:21,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:21,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:33:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:33:21,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 244 [2022-12-13 16:33:21,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2022-12-13 16:33:21,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:21,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 244 [2022-12-13 16:33:21,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:21,645 INFO L130 PetriNetUnfolder]: 2112/3546 cut-off events. [2022-12-13 16:33:21,645 INFO L131 PetriNetUnfolder]: For 984/984 co-relation queries the response was YES. [2022-12-13 16:33:21,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 3546 events. 2112/3546 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20252 event pairs, 580 based on Foata normal form. 90/3130 useless extension candidates. Maximal degree in co-relation 7612. Up to 1880 conditions per place. [2022-12-13 16:33:21,654 INFO L137 encePairwiseOnDemand]: 230/244 looper letters, 95 selfloop transitions, 16 changer transitions 7/130 dead transitions. [2022-12-13 16:33:21,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 601 flow [2022-12-13 16:33:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:33:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:33:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2022-12-13 16:33:21,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5655737704918032 [2022-12-13 16:33:21,655 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 690 transitions. [2022-12-13 16:33:21,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 690 transitions. [2022-12-13 16:33:21,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:21,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 690 transitions. [2022-12-13 16:33:21,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 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) [2022-12-13 16:33:21,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:21,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:21,658 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 190 flow. Second operand 5 states and 690 transitions. [2022-12-13 16:33:21,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 601 flow [2022-12-13 16:33:21,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 130 transitions, 591 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:33:21,661 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 321 flow [2022-12-13 16:33:21,661 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2022-12-13 16:33:21,662 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2022-12-13 16:33:21,662 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 321 flow [2022-12-13 16:33:21,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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) [2022-12-13 16:33:21,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:21,662 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:21,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:33:21,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:21,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:21,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1258987747, now seen corresponding path program 3 times [2022-12-13 16:33:21,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:21,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501148774] [2022-12-13 16:33:21,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:21,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:21,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:21,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501148774] [2022-12-13 16:33:21,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501148774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:21,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:21,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:33:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503764545] [2022-12-13 16:33:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:21,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:33:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:21,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:33:21,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:33:21,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 244 [2022-12-13 16:33:21,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2022-12-13 16:33:21,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:21,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 244 [2022-12-13 16:33:21,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:22,265 INFO L130 PetriNetUnfolder]: 4256/7269 cut-off events. [2022-12-13 16:33:22,266 INFO L131 PetriNetUnfolder]: For 3863/4177 co-relation queries the response was YES. [2022-12-13 16:33:22,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17935 conditions, 7269 events. 4256/7269 cut-off events. For 3863/4177 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 47286 event pairs, 1032 based on Foata normal form. 266/6731 useless extension candidates. Maximal degree in co-relation 17925. Up to 2770 conditions per place. [2022-12-13 16:33:22,302 INFO L137 encePairwiseOnDemand]: 238/244 looper letters, 147 selfloop transitions, 8 changer transitions 5/183 dead transitions. [2022-12-13 16:33:22,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 183 transitions, 1044 flow [2022-12-13 16:33:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:33:22,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:33:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2022-12-13 16:33:22,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6172131147540983 [2022-12-13 16:33:22,307 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2022-12-13 16:33:22,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2022-12-13 16:33:22,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:22,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2022-12-13 16:33:22,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 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) [2022-12-13 16:33:22,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:22,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:22,315 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 321 flow. Second operand 5 states and 753 transitions. [2022-12-13 16:33:22,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 183 transitions, 1044 flow [2022-12-13 16:33:22,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 183 transitions, 1038 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 16:33:22,329 INFO L231 Difference]: Finished difference. Result has 72 places, 87 transitions, 385 flow [2022-12-13 16:33:22,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=72, PETRI_TRANSITIONS=87} [2022-12-13 16:33:22,330 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2022-12-13 16:33:22,330 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 87 transitions, 385 flow [2022-12-13 16:33:22,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2022-12-13 16:33:22,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:22,330 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:22,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:33:22,331 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1925814179, now seen corresponding path program 4 times [2022-12-13 16:33:22,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:22,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220211310] [2022-12-13 16:33:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:22,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:22,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220211310] [2022-12-13 16:33:22,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220211310] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:22,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:22,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:33:22,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157595180] [2022-12-13 16:33:22,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:22,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:33:22,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:33:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:33:22,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 244 [2022-12-13 16:33:22,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 87 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2022-12-13 16:33:22,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:22,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 244 [2022-12-13 16:33:22,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:22,947 INFO L130 PetriNetUnfolder]: 3733/6920 cut-off events. [2022-12-13 16:33:22,947 INFO L131 PetriNetUnfolder]: For 4893/5289 co-relation queries the response was YES. [2022-12-13 16:33:22,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17887 conditions, 6920 events. 3733/6920 cut-off events. For 4893/5289 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 47738 event pairs, 750 based on Foata normal form. 424/6818 useless extension candidates. Maximal degree in co-relation 17873. Up to 1889 conditions per place. [2022-12-13 16:33:22,978 INFO L137 encePairwiseOnDemand]: 238/244 looper letters, 140 selfloop transitions, 12 changer transitions 3/180 dead transitions. [2022-12-13 16:33:22,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 180 transitions, 1082 flow [2022-12-13 16:33:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:33:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:33:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2022-12-13 16:33:22,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6122950819672132 [2022-12-13 16:33:22,980 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2022-12-13 16:33:22,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2022-12-13 16:33:22,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:22,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2022-12-13 16:33:22,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 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) [2022-12-13 16:33:22,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:22,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:22,982 INFO L175 Difference]: Start difference. First operand has 72 places, 87 transitions, 385 flow. Second operand 5 states and 747 transitions. [2022-12-13 16:33:22,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 180 transitions, 1082 flow [2022-12-13 16:33:22,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 180 transitions, 1082 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:33:22,990 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 482 flow [2022-12-13 16:33:22,990 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=482, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2022-12-13 16:33:22,990 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2022-12-13 16:33:22,991 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 482 flow [2022-12-13 16:33:22,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 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) [2022-12-13 16:33:22,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:22,991 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:22,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:33:22,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:22,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1305822088, now seen corresponding path program 1 times [2022-12-13 16:33:22,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:22,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152169909] [2022-12-13 16:33:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:22,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:23,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:23,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152169909] [2022-12-13 16:33:23,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152169909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:23,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:23,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:33:23,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178499055] [2022-12-13 16:33:23,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:23,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:33:23,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:33:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:33:23,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 244 [2022-12-13 16:33:23,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2022-12-13 16:33:23,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:23,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 244 [2022-12-13 16:33:23,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:23,521 INFO L130 PetriNetUnfolder]: 2804/5172 cut-off events. [2022-12-13 16:33:23,521 INFO L131 PetriNetUnfolder]: For 4530/4848 co-relation queries the response was YES. [2022-12-13 16:33:23,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13523 conditions, 5172 events. 2804/5172 cut-off events. For 4530/4848 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 33091 event pairs, 969 based on Foata normal form. 234/4954 useless extension candidates. Maximal degree in co-relation 13506. Up to 2563 conditions per place. [2022-12-13 16:33:23,537 INFO L137 encePairwiseOnDemand]: 237/244 looper letters, 81 selfloop transitions, 10 changer transitions 2/130 dead transitions. [2022-12-13 16:33:23,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 130 transitions, 807 flow [2022-12-13 16:33:23,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:33:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:33:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-12-13 16:33:23,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5606557377049181 [2022-12-13 16:33:23,538 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-12-13 16:33:23,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-12-13 16:33:23,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:23,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-12-13 16:33:23,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2022-12-13 16:33:23,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:23,545 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:23,545 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 482 flow. Second operand 5 states and 684 transitions. [2022-12-13 16:33:23,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 130 transitions, 807 flow [2022-12-13 16:33:23,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 785 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-12-13 16:33:23,557 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 503 flow [2022-12-13 16:33:23,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2022-12-13 16:33:23,558 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 23 predicate places. [2022-12-13 16:33:23,558 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 503 flow [2022-12-13 16:33:23,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2022-12-13 16:33:23,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:23,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:23,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:33:23,559 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1003719818, now seen corresponding path program 1 times [2022-12-13 16:33:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:23,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510405194] [2022-12-13 16:33:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:23,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:23,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510405194] [2022-12-13 16:33:23,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510405194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:23,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:23,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:33:23,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372061039] [2022-12-13 16:33:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:23,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:33:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:33:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:33:23,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 244 [2022-12-13 16:33:23,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2022-12-13 16:33:23,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:23,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 244 [2022-12-13 16:33:23,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:23,996 INFO L130 PetriNetUnfolder]: 1663/3282 cut-off events. [2022-12-13 16:33:23,996 INFO L131 PetriNetUnfolder]: For 3586/3813 co-relation queries the response was YES. [2022-12-13 16:33:24,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9132 conditions, 3282 events. 1663/3282 cut-off events. For 3586/3813 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 21245 event pairs, 582 based on Foata normal form. 144/3165 useless extension candidates. Maximal degree in co-relation 9111. Up to 1666 conditions per place. [2022-12-13 16:33:24,013 INFO L137 encePairwiseOnDemand]: 237/244 looper letters, 79 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2022-12-13 16:33:24,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 126 transitions, 764 flow [2022-12-13 16:33:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:33:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:33:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 682 transitions. [2022-12-13 16:33:24,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.559016393442623 [2022-12-13 16:33:24,017 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 682 transitions. [2022-12-13 16:33:24,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 682 transitions. [2022-12-13 16:33:24,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:24,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 682 transitions. [2022-12-13 16:33:24,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 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) [2022-12-13 16:33:24,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:24,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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) [2022-12-13 16:33:24,024 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 503 flow. Second operand 5 states and 682 transitions. [2022-12-13 16:33:24,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 126 transitions, 764 flow [2022-12-13 16:33:24,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 748 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-12-13 16:33:24,036 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 512 flow [2022-12-13 16:33:24,036 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2022-12-13 16:33:24,037 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 28 predicate places. [2022-12-13 16:33:24,037 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 512 flow [2022-12-13 16:33:24,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 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) [2022-12-13 16:33:24,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:33:24,038 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:24,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:33:24,038 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 16:33:24,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:33:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash 560288572, now seen corresponding path program 1 times [2022-12-13 16:33:24,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:33:24,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865565945] [2022-12-13 16:33:24,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:33:24,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:33:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:33:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:33:24,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:33:24,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865565945] [2022-12-13 16:33:24,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865565945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:33:24,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:33:24,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:33:24,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922212190] [2022-12-13 16:33:24,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:33:24,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:33:24,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:33:24,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:33:24,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:33:24,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 244 [2022-12-13 16:33:24,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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) [2022-12-13 16:33:24,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:33:24,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 244 [2022-12-13 16:33:24,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:33:24,663 INFO L130 PetriNetUnfolder]: 1575/3163 cut-off events. [2022-12-13 16:33:24,664 INFO L131 PetriNetUnfolder]: For 3824/4030 co-relation queries the response was YES. [2022-12-13 16:33:24,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 3163 events. 1575/3163 cut-off events. For 3824/4030 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 20700 event pairs, 883 based on Foata normal form. 130/2997 useless extension candidates. Maximal degree in co-relation 9284. Up to 2366 conditions per place. [2022-12-13 16:33:24,673 INFO L137 encePairwiseOnDemand]: 242/244 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2022-12-13 16:33:24,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 622 flow [2022-12-13 16:33:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:33:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:33:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2022-12-13 16:33:24,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5587431693989071 [2022-12-13 16:33:24,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2022-12-13 16:33:24,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2022-12-13 16:33:24,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:33:24,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2022-12-13 16:33:24,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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) [2022-12-13 16:33:24,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:24,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2022-12-13 16:33:24,677 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 512 flow. Second operand 3 states and 409 transitions. [2022-12-13 16:33:24,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 622 flow [2022-12-13 16:33:24,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 97 transitions, 611 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 16:33:24,687 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2022-12-13 16:33:24,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2022-12-13 16:33:24,688 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 27 predicate places. [2022-12-13 16:33:24,688 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2022-12-13 16:33:24,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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) [2022-12-13 16:33:24,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2022-12-13 16:33:24,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-12-13 16:33:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-12-13 16:33:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2022-12-13 16:33:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-12-13 16:33:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2022-12-13 16:33:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2022-12-13 16:33:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2022-12-13 16:33:24,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:33:24,692 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:33:24,696 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 16:33:24,697 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:33:24,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:33:24 BasicIcfg [2022-12-13 16:33:24,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:33:24,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:33:24,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:33:24,700 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:33:24,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:33:16" (3/4) ... [2022-12-13 16:33:24,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:33:24,706 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-12-13 16:33:24,706 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-12-13 16:33:24,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-13 16:33:24,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 16:33:24,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 16:33:24,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:33:24,730 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:33:24,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:33:24,730 INFO L158 Benchmark]: Toolchain (without parser) took 8769.34ms. Allocated memory was 153.1MB in the beginning and 511.7MB in the end (delta: 358.6MB). Free memory was 112.3MB in the beginning and 301.0MB in the end (delta: -188.6MB). Peak memory consumption was 169.6MB. Max. memory is 16.1GB. [2022-12-13 16:33:24,730 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:33:24,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.26ms. Allocated memory is still 153.1MB. Free memory was 112.3MB in the beginning and 83.8MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 16:33:24,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.56ms. Allocated memory is still 153.1MB. Free memory was 83.8MB in the beginning and 124.9MB in the end (delta: -41.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-12-13 16:33:24,731 INFO L158 Benchmark]: Boogie Preprocessor took 33.78ms. Allocated memory is still 153.1MB. Free memory was 124.9MB in the beginning and 123.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:33:24,731 INFO L158 Benchmark]: RCFGBuilder took 361.22ms. Allocated memory is still 153.1MB. Free memory was 123.1MB in the beginning and 107.1MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 16:33:24,731 INFO L158 Benchmark]: TraceAbstraction took 7887.18ms. Allocated memory was 153.1MB in the beginning and 511.7MB in the end (delta: 358.6MB). Free memory was 106.3MB in the beginning and 303.1MB in the end (delta: -196.8MB). Peak memory consumption was 228.0MB. Max. memory is 16.1GB. [2022-12-13 16:33:24,732 INFO L158 Benchmark]: Witness Printer took 30.51ms. Allocated memory is still 511.7MB. Free memory was 303.1MB in the beginning and 301.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:33:24,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.26ms. Allocated memory is still 153.1MB. Free memory was 112.3MB in the beginning and 83.8MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.56ms. Allocated memory is still 153.1MB. Free memory was 83.8MB in the beginning and 124.9MB in the end (delta: -41.1MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.78ms. Allocated memory is still 153.1MB. Free memory was 124.9MB in the beginning and 123.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.22ms. Allocated memory is still 153.1MB. Free memory was 123.1MB in the beginning and 107.1MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7887.18ms. Allocated memory was 153.1MB in the beginning and 511.7MB in the end (delta: 358.6MB). Free memory was 106.3MB in the beginning and 303.1MB in the end (delta: -196.8MB). Peak memory consumption was 228.0MB. Max. memory is 16.1GB. * Witness Printer took 30.51ms. Allocated memory is still 511.7MB. Free memory was 303.1MB in the beginning and 301.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 121 PlacesBefore, 63 PlacesAfterwards, 138 TransitionsBefore, 73 TransitionsAfterwards, 5676 CoEnabledTransitionPairs, 5 FixpointIterations, 38 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 7 ChoiceCompositions, 99 TotalNumberOfCompositions, 16119 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7062, independent: 6727, independent conditional: 0, independent unconditional: 6727, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2561, independent: 2515, independent conditional: 0, independent unconditional: 2515, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7062, independent: 4212, independent conditional: 0, independent unconditional: 4212, dependent: 289, dependent conditional: 0, dependent unconditional: 289, unknown: 2561, unknown conditional: 0, unknown unconditional: 2561] , Statistics on independence cache: Total cache size (in pairs): 506, Positive cache size: 469, Positive conditional cache size: 0, Positive unconditional cache size: 469, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 834]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 764]: 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: 843]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 188 locations, 15 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1083 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 800 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1885 IncrementalHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 68 mSDtfsCounter, 1885 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=512occurred in iteration=13, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 730 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 16:33:24,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e584a1c8-8425-47af-bad7-77c1a7f89772/bin/uautomizer-uyxdKDjOR8/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