./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/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_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/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_6420739b-1fed-46b4-923b-986cd7a4c4bb/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 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --- 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 14:56:11,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:56:11,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:56:11,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:56:11,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:56:11,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:56:11,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:56:11,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:56:11,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:56:11,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:56:11,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:56:11,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:56:11,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:56:11,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:56:11,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:56:11,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:56:11,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:56:11,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:56:11,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:56:11,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:56:11,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:56:11,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:56:11,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:56:11,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:56:11,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:56:11,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:56:11,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:56:11,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:56:11,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:56:11,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:56:11,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:56:11,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:56:11,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:56:11,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:56:11,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:56:11,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:56:11,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:56:11,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:56:11,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:56:11,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:56:11,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:56:11,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 14:56:11,444 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:56:11,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:56:11,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:56:11,444 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:56:11,445 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:56:11,445 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:56:11,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:56:11,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:56:11,446 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:56:11,446 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:56:11,447 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:56:11,447 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:56:11,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:56:11,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:56:11,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:56:11,448 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 14:56:11,448 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 14:56:11,448 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 14:56:11,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:56:11,448 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:56:11,448 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:56:11,449 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:56:11,449 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:56:11,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:56:11,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:56:11,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:56:11,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:56:11,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:56:11,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:56:11,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:56:11,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:56:11,450 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:56:11,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:56:11,451 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:56:11,451 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_6420739b-1fed-46b4-923b-986cd7a4c4bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f [2022-12-13 14:56:11,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:56:11,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:56:11,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:56:11,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:56:11,650 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:56:11,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/dekker.i [2022-12-13 14:56:14,317 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:56:14,493 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:56:14,493 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/sv-benchmarks/c/pthread-atomic/dekker.i [2022-12-13 14:56:14,509 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/data/dd571a40b/56d179528f0d4a7aaddf883c69122ed9/FLAG97f8ffe16 [2022-12-13 14:56:14,523 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/data/dd571a40b/56d179528f0d4a7aaddf883c69122ed9 [2022-12-13 14:56:14,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:56:14,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:56:14,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:56:14,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:56:14,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:56:14,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e71c06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14, skipping insertion in model container [2022-12-13 14:56:14,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:56:14,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:56:14,728 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:56:14,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,819 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,820 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,821 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_6420739b-1fed-46b4-923b-986cd7a4c4bb/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2022-12-13 14:56:14,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,830 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,831 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_6420739b-1fed-46b4-923b-986cd7a4c4bb/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2022-12-13 14:56:14,831 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,832 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:56:14,845 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:56:14,856 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 14:56:14,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,875 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_6420739b-1fed-46b4-923b-986cd7a4c4bb/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2022-12-13 14:56:14,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,881 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,882 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,882 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_6420739b-1fed-46b4-923b-986cd7a4c4bb/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2022-12-13 14:56:14,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,883 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:56:14,884 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:56:14,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:56:14,908 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:56:14,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14 WrapperNode [2022-12-13 14:56:14,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:56:14,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:56:14,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:56:14,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:56:14,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,937 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-12-13 14:56:14,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:56:14,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:56:14,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:56:14,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:56:14,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,956 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:56:14,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:56:14,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:56:14,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:56:14,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (1/1) ... [2022-12-13 14:56:14,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:56:14,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:56:14,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:56:14,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:56:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:56:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 14:56:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 14:56:15,016 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 14:56:15,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:56:15,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:56:15,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:56:15,019 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 14:56:15,114 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:56:15,115 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:56:15,286 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:56:15,291 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:56:15,291 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 14:56:15,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:56:15 BoogieIcfgContainer [2022-12-13 14:56:15,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:56:15,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:56:15,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:56:15,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:56:15,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:56:14" (1/3) ... [2022-12-13 14:56:15,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d413b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:56:15, skipping insertion in model container [2022-12-13 14:56:15,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:56:14" (2/3) ... [2022-12-13 14:56:15,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d413b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:56:15, skipping insertion in model container [2022-12-13 14:56:15,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:56:15" (3/3) ... [2022-12-13 14:56:15,299 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2022-12-13 14:56:15,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:56:15,313 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 14:56:15,313 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:56:15,378 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 14:56:15,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 118 transitions, 252 flow [2022-12-13 14:56:15,456 INFO L130 PetriNetUnfolder]: 13/116 cut-off events. [2022-12-13 14:56:15,457 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:56:15,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 116 events. 13/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 185 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-13 14:56:15,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 118 transitions, 252 flow [2022-12-13 14:56:15,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 111 transitions, 234 flow [2022-12-13 14:56:15,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:56:15,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 111 transitions, 234 flow [2022-12-13 14:56:15,478 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 111 transitions, 234 flow [2022-12-13 14:56:15,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 111 transitions, 234 flow [2022-12-13 14:56:15,495 INFO L130 PetriNetUnfolder]: 13/111 cut-off events. [2022-12-13 14:56:15,495 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 14:56:15,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 13/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 184 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-13 14:56:15,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 2548 [2022-12-13 14:56:17,452 INFO L134 LiptonReduction]: Checked pairs total: 8185 [2022-12-13 14:56:17,452 INFO L136 LiptonReduction]: Total number of compositions: 88 [2022-12-13 14:56:17,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:56:17,467 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;@bb332cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:56:17,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 14:56:17,468 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 14:56:17,468 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:56:17,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:17,468 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 14:56:17,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 14:56:17,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:17,472 INFO L85 PathProgramCache]: Analyzing trace with hash 467, now seen corresponding path program 1 times [2022-12-13 14:56:17,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:17,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472727764] [2022-12-13 14:56:17,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:17,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:17,565 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 14:56:17,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:17,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472727764] [2022-12-13 14:56:17,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472727764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:17,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:17,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 14:56:17,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543024830] [2022-12-13 14:56:17,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:17,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:56:17,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:17,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:56:17,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:56:17,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2022-12-13 14:56:17,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 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 14:56:17,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:17,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2022-12-13 14:56:17,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:17,753 INFO L130 PetriNetUnfolder]: 892/1479 cut-off events. [2022-12-13 14:56:17,753 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-13 14:56:17,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 1479 events. 892/1479 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7754 event pairs, 612 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 2594. Up to 1304 conditions per place. [2022-12-13 14:56:17,766 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 35 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2022-12-13 14:56:17,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 168 flow [2022-12-13 14:56:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:56:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 14:56:17,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 251 transitions. [2022-12-13 14:56:17,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6092233009708737 [2022-12-13 14:56:17,780 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 251 transitions. [2022-12-13 14:56:17,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 251 transitions. [2022-12-13 14:56:17,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:17,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 251 transitions. [2022-12-13 14:56:17,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.5) internal successors, (251), 2 states have internal predecessors, (251), 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 14:56:17,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 14:56:17,791 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 14:56:17,793 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 102 flow. Second operand 2 states and 251 transitions. [2022-12-13 14:56:17,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 168 flow [2022-12-13 14:56:17,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 160 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:56:17,799 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 90 flow [2022-12-13 14:56:17,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2022-12-13 14:56:17,804 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2022-12-13 14:56:17,804 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 90 flow [2022-12-13 14:56:17,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 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 14:56:17,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:17,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:56:17,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:56:17,805 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 14:56:17,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash 459007, now seen corresponding path program 1 times [2022-12-13 14:56:17,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:17,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848698677] [2022-12-13 14:56:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:17,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:17,943 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 14:56:17,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:17,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848698677] [2022-12-13 14:56:17,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848698677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:17,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:17,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:56:17,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192374564] [2022-12-13 14:56:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:17,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:17,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:56:17,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 206 [2022-12-13 14:56:17,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 14:56:17,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:17,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 206 [2022-12-13 14:56:17,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:18,094 INFO L130 PetriNetUnfolder]: 867/1431 cut-off events. [2022-12-13 14:56:18,095 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 14:56:18,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 1431 events. 867/1431 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7441 event pairs, 594 based on Foata normal form. 0/848 useless extension candidates. Maximal degree in co-relation 2700. Up to 1258 conditions per place. [2022-12-13 14:56:18,099 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 31 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-12-13 14:56:18,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 152 flow [2022-12-13 14:56:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:56:18,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2022-12-13 14:56:18,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5323624595469255 [2022-12-13 14:56:18,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2022-12-13 14:56:18,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2022-12-13 14:56:18,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:18,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2022-12-13 14:56:18,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 14:56:18,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,104 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 90 flow. Second operand 3 states and 329 transitions. [2022-12-13 14:56:18,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 152 flow [2022-12-13 14:56:18,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:56:18,105 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 90 flow [2022-12-13 14:56:18,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2022-12-13 14:56:18,106 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -5 predicate places. [2022-12-13 14:56:18,106 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 90 flow [2022-12-13 14:56:18,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 14:56:18,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:18,106 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:56:18,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:56:18,107 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 14:56:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 459009, now seen corresponding path program 1 times [2022-12-13 14:56:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:18,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892472882] [2022-12-13 14:56:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,182 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 14:56:18,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:18,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892472882] [2022-12-13 14:56:18,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892472882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:18,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:18,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:56:18,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708492191] [2022-12-13 14:56:18,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:18,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:18,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:18,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:56:18,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 206 [2022-12-13 14:56:18,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 14:56:18,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:18,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 206 [2022-12-13 14:56:18,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:18,318 INFO L130 PetriNetUnfolder]: 842/1383 cut-off events. [2022-12-13 14:56:18,318 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 14:56:18,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2614 conditions, 1383 events. 842/1383 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7162 event pairs, 576 based on Foata normal form. 0/830 useless extension candidates. Maximal degree in co-relation 2610. Up to 1214 conditions per place. [2022-12-13 14:56:18,326 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 29 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2022-12-13 14:56:18,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 148 flow [2022-12-13 14:56:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:56:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2022-12-13 14:56:18,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5485436893203883 [2022-12-13 14:56:18,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2022-12-13 14:56:18,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2022-12-13 14:56:18,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:18,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2022-12-13 14:56:18,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 14:56:18,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,333 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 90 flow. Second operand 3 states and 339 transitions. [2022-12-13 14:56:18,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 148 flow [2022-12-13 14:56:18,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:56:18,334 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 86 flow [2022-12-13 14:56:18,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2022-12-13 14:56:18,335 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2022-12-13 14:56:18,335 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 86 flow [2022-12-13 14:56:18,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 14:56:18,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:18,335 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 14:56:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:56:18,336 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 14:56:18,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash 441117795, now seen corresponding path program 1 times [2022-12-13 14:56:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:18,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512823585] [2022-12-13 14:56:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,423 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 14:56:18,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:18,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512823585] [2022-12-13 14:56:18,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512823585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:18,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:18,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:56:18,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910613838] [2022-12-13 14:56:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:18,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:56:18,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:56:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:56:18,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2022-12-13 14:56:18,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 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 14:56:18,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:18,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2022-12-13 14:56:18,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:18,554 INFO L130 PetriNetUnfolder]: 621/1039 cut-off events. [2022-12-13 14:56:18,555 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 14:56:18,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 1039 events. 621/1039 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5127 event pairs, 418 based on Foata normal form. 0/665 useless extension candidates. Maximal degree in co-relation 1962. Up to 910 conditions per place. [2022-12-13 14:56:18,561 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 28 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2022-12-13 14:56:18,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 144 flow [2022-12-13 14:56:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:56:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2022-12-13 14:56:18,562 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5064724919093851 [2022-12-13 14:56:18,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2022-12-13 14:56:18,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2022-12-13 14:56:18,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:18,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2022-12-13 14:56:18,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 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 14:56:18,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,566 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 86 flow. Second operand 3 states and 313 transitions. [2022-12-13 14:56:18,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 144 flow [2022-12-13 14:56:18,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:56:18,568 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 84 flow [2022-12-13 14:56:18,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2022-12-13 14:56:18,568 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -8 predicate places. [2022-12-13 14:56:18,569 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 84 flow [2022-12-13 14:56:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 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 14:56:18,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:18,569 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 14:56:18,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:56:18,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 14:56:18,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:18,570 INFO L85 PathProgramCache]: Analyzing trace with hash 441117796, now seen corresponding path program 1 times [2022-12-13 14:56:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:18,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494629170] [2022-12-13 14:56:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:18,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,652 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 14:56:18,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:18,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494629170] [2022-12-13 14:56:18,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494629170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:18,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:18,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:56:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488126490] [2022-12-13 14:56:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:18,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:56:18,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 206 [2022-12-13 14:56:18,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 14:56:18,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:18,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 206 [2022-12-13 14:56:18,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:18,746 INFO L130 PetriNetUnfolder]: 400/695 cut-off events. [2022-12-13 14:56:18,747 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 14:56:18,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 695 events. 400/695 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3242 event pairs, 260 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1314. Up to 606 conditions per place. [2022-12-13 14:56:18,749 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 27 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-12-13 14:56:18,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 140 flow [2022-12-13 14:56:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:56:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2022-12-13 14:56:18,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5436893203883495 [2022-12-13 14:56:18,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2022-12-13 14:56:18,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2022-12-13 14:56:18,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:18,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2022-12-13 14:56:18,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 14:56:18,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,753 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 84 flow. Second operand 3 states and 336 transitions. [2022-12-13 14:56:18,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 140 flow [2022-12-13 14:56:18,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:56:18,754 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 82 flow [2022-12-13 14:56:18,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2022-12-13 14:56:18,755 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -9 predicate places. [2022-12-13 14:56:18,755 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 82 flow [2022-12-13 14:56:18,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 14:56:18,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:18,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 14:56:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:56:18,755 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 14:56:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash 788504326, now seen corresponding path program 1 times [2022-12-13 14:56:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:18,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538654782] [2022-12-13 14:56:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:18,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,775 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 14:56:18,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:18,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538654782] [2022-12-13 14:56:18,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538654782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:18,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:18,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:56:18,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939126134] [2022-12-13 14:56:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:18,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:18,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:56:18,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 206 [2022-12-13 14:56:18,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 14:56:18,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:18,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 206 [2022-12-13 14:56:18,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:18,867 INFO L130 PetriNetUnfolder]: 401/720 cut-off events. [2022-12-13 14:56:18,867 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 14:56:18,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 720 events. 401/720 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3450 event pairs, 155 based on Foata normal form. 0/541 useless extension candidates. Maximal degree in co-relation 1364. Up to 400 conditions per place. [2022-12-13 14:56:18,871 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 42 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2022-12-13 14:56:18,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 208 flow [2022-12-13 14:56:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:18,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:56:18,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2022-12-13 14:56:18,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5711974110032363 [2022-12-13 14:56:18,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2022-12-13 14:56:18,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2022-12-13 14:56:18,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:18,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2022-12-13 14:56:18,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 14:56:18,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:18,875 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 82 flow. Second operand 3 states and 353 transitions. [2022-12-13 14:56:18,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 208 flow [2022-12-13 14:56:18,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:56:18,876 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 98 flow [2022-12-13 14:56:18,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2022-12-13 14:56:18,877 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2022-12-13 14:56:18,877 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 98 flow [2022-12-13 14:56:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 14:56:18,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:18,877 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:56:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:56:18,877 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 14:56:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1260442225, now seen corresponding path program 1 times [2022-12-13 14:56:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:18,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239443204] [2022-12-13 14:56:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:18,900 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 14:56:18,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:18,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239443204] [2022-12-13 14:56:18,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239443204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:18,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:18,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:56:18,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835231790] [2022-12-13 14:56:18,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:18,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:18,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:18,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:56:18,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 206 [2022-12-13 14:56:18,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 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 14:56:18,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:18,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 206 [2022-12-13 14:56:18,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:18,996 INFO L130 PetriNetUnfolder]: 359/654 cut-off events. [2022-12-13 14:56:18,996 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-12-13 14:56:18,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346 conditions, 654 events. 359/654 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3107 event pairs, 157 based on Foata normal form. 28/586 useless extension candidates. Maximal degree in co-relation 1341. Up to 399 conditions per place. [2022-12-13 14:56:19,000 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-12-13 14:56:19,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 212 flow [2022-12-13 14:56:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:56:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2022-12-13 14:56:19,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5679611650485437 [2022-12-13 14:56:19,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2022-12-13 14:56:19,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2022-12-13 14:56:19,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:19,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2022-12-13 14:56:19,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 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 14:56:19,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:19,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:19,004 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 98 flow. Second operand 3 states and 351 transitions. [2022-12-13 14:56:19,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 212 flow [2022-12-13 14:56:19,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:56:19,006 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 102 flow [2022-12-13 14:56:19,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2022-12-13 14:56:19,007 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -6 predicate places. [2022-12-13 14:56:19,007 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 102 flow [2022-12-13 14:56:19,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 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 14:56:19,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:19,007 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:56:19,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:56:19,007 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 14:56:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -17285039, now seen corresponding path program 1 times [2022-12-13 14:56:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466750393] [2022-12-13 14:56:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:19,039 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 14:56:19,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:19,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466750393] [2022-12-13 14:56:19,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466750393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:19,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:19,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:56:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800742816] [2022-12-13 14:56:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:19,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:56:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:56:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:56:19,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 206 [2022-12-13 14:56:19,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 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 14:56:19,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:19,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 206 [2022-12-13 14:56:19,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:19,182 INFO L130 PetriNetUnfolder]: 587/988 cut-off events. [2022-12-13 14:56:19,182 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-12-13 14:56:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 988 events. 587/988 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4733 event pairs, 123 based on Foata normal form. 16/827 useless extension candidates. Maximal degree in co-relation 2040. Up to 339 conditions per place. [2022-12-13 14:56:19,185 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 59 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2022-12-13 14:56:19,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 337 flow [2022-12-13 14:56:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:56:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:56:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2022-12-13 14:56:19,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5504854368932038 [2022-12-13 14:56:19,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2022-12-13 14:56:19,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2022-12-13 14:56:19,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:19,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2022-12-13 14:56:19,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 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 14:56:19,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 14:56:19,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 14:56:19,189 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 102 flow. Second operand 5 states and 567 transitions. [2022-12-13 14:56:19,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 337 flow [2022-12-13 14:56:19,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:56:19,191 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 172 flow [2022-12-13 14:56:19,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2022-12-13 14:56:19,192 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2022-12-13 14:56:19,192 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 172 flow [2022-12-13 14:56:19,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 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 14:56:19,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:19,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:56:19,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:56:19,192 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 14:56:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1046761095, now seen corresponding path program 2 times [2022-12-13 14:56:19,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:19,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890497067] [2022-12-13 14:56:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:19,222 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 14:56:19,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:19,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890497067] [2022-12-13 14:56:19,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890497067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:19,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:19,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:56:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771818827] [2022-12-13 14:56:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:19,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:56:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:56:19,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:56:19,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 206 [2022-12-13 14:56:19,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 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 14:56:19,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:19,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 206 [2022-12-13 14:56:19,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:19,388 INFO L130 PetriNetUnfolder]: 798/1277 cut-off events. [2022-12-13 14:56:19,389 INFO L131 PetriNetUnfolder]: For 811/815 co-relation queries the response was YES. [2022-12-13 14:56:19,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1277 events. 798/1277 cut-off events. For 811/815 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5869 event pairs, 134 based on Foata normal form. 28/1157 useless extension candidates. Maximal degree in co-relation 3103. Up to 385 conditions per place. [2022-12-13 14:56:19,397 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 70 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2022-12-13 14:56:19,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 89 transitions, 492 flow [2022-12-13 14:56:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:56:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:56:19,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2022-12-13 14:56:19,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.545631067961165 [2022-12-13 14:56:19,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2022-12-13 14:56:19,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2022-12-13 14:56:19,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:19,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2022-12-13 14:56:19,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 14:56:19,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 14:56:19,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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 14:56:19,406 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 172 flow. Second operand 5 states and 562 transitions. [2022-12-13 14:56:19,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 89 transitions, 492 flow [2022-12-13 14:56:19,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 89 transitions, 484 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 14:56:19,413 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 221 flow [2022-12-13 14:56:19,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2022-12-13 14:56:19,414 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2022-12-13 14:56:19,415 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 221 flow [2022-12-13 14:56:19,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 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 14:56:19,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:19,415 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] [2022-12-13 14:56:19,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:56:19,416 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 14:56:19,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash 312021102, now seen corresponding path program 1 times [2022-12-13 14:56:19,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:19,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647300249] [2022-12-13 14:56:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:19,605 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 14:56:19,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647300249] [2022-12-13 14:56:19,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647300249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:19,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:19,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:56:19,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014861745] [2022-12-13 14:56:19,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:56:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:56:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:56:19,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2022-12-13 14:56:19,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 14:56:19,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:19,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2022-12-13 14:56:19,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:56:19,763 INFO L130 PetriNetUnfolder]: 739/1212 cut-off events. [2022-12-13 14:56:19,763 INFO L131 PetriNetUnfolder]: For 1259/1272 co-relation queries the response was YES. [2022-12-13 14:56:19,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3281 conditions, 1212 events. 739/1212 cut-off events. For 1259/1272 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5815 event pairs, 343 based on Foata normal form. 14/1167 useless extension candidates. Maximal degree in co-relation 3268. Up to 1026 conditions per place. [2022-12-13 14:56:19,767 INFO L137 encePairwiseOnDemand]: 204/206 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2022-12-13 14:56:19,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 289 flow [2022-12-13 14:56:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:56:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:56:19,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2022-12-13 14:56:19,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5339805825242718 [2022-12-13 14:56:19,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2022-12-13 14:56:19,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2022-12-13 14:56:19,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:56:19,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2022-12-13 14:56:19,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 14:56:19,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:19,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 14:56:19,772 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 221 flow. Second operand 3 states and 330 transitions. [2022-12-13 14:56:19,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 289 flow [2022-12-13 14:56:19,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:56:19,777 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2022-12-13 14:56:19,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2022-12-13 14:56:19,778 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-12-13 14:56:19,778 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2022-12-13 14:56:19,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 14:56:19,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2022-12-13 14:56:19,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2022-12-13 14:56:19,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-12-13 14:56:19,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-12-13 14:56:19,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-12-13 14:56:19,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2022-12-13 14:56:19,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2022-12-13 14:56:19,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 14:56:19,783 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:56:19,788 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:56:19,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:56:19,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:56:19 BasicIcfg [2022-12-13 14:56:19,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:56:19,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:56:19,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:56:19,792 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:56:19,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:56:15" (3/4) ... [2022-12-13 14:56:19,795 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:56:19,801 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-12-13 14:56:19,801 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-12-13 14:56:19,804 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-12-13 14:56:19,804 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 14:56:19,804 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 14:56:19,805 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:56:19,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:56:19,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:56:19,835 INFO L158 Benchmark]: Toolchain (without parser) took 5308.12ms. Allocated memory is still 157.3MB. Free memory was 121.2MB in the beginning and 42.7MB in the end (delta: 78.5MB). Peak memory consumption was 80.1MB. Max. memory is 16.1GB. [2022-12-13 14:56:19,835 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory was 94.2MB in the beginning and 94.2MB in the end (delta: 24.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:56:19,835 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.26ms. Allocated memory is still 157.3MB. Free memory was 121.2MB in the beginning and 96.6MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 14:56:19,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.56ms. Allocated memory is still 157.3MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:56:19,835 INFO L158 Benchmark]: Boogie Preprocessor took 20.54ms. Allocated memory is still 157.3MB. Free memory was 94.5MB in the beginning and 92.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:56:19,836 INFO L158 Benchmark]: RCFGBuilder took 333.92ms. Allocated memory is still 157.3MB. Free memory was 92.7MB in the beginning and 78.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 14:56:19,836 INFO L158 Benchmark]: TraceAbstraction took 4497.15ms. Allocated memory is still 157.3MB. Free memory was 77.1MB in the beginning and 44.8MB in the end (delta: 32.3MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-12-13 14:56:19,836 INFO L158 Benchmark]: Witness Printer took 42.30ms. Allocated memory is still 157.3MB. Free memory was 44.8MB in the beginning and 42.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:56:19,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 119.5MB. Free memory was 94.2MB in the beginning and 94.2MB in the end (delta: 24.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.26ms. Allocated memory is still 157.3MB. Free memory was 121.2MB in the beginning and 96.6MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.56ms. Allocated memory is still 157.3MB. Free memory was 96.6MB in the beginning and 94.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.54ms. Allocated memory is still 157.3MB. Free memory was 94.5MB in the beginning and 92.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.92ms. Allocated memory is still 157.3MB. Free memory was 92.7MB in the beginning and 78.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4497.15ms. Allocated memory is still 157.3MB. Free memory was 77.1MB in the beginning and 44.8MB in the end (delta: 32.3MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 42.30ms. Allocated memory is still 157.3MB. Free memory was 44.8MB in the beginning and 42.7MB 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: 2.0s, 105 PlacesBefore, 46 PlacesAfterwards, 111 TransitionsBefore, 45 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 9 ConcurrentYvCompositions, 7 ChoiceCompositions, 88 TotalNumberOfCompositions, 8185 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4271, independent: 3993, independent conditional: 0, independent unconditional: 3993, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1318, independent: 1285, independent conditional: 0, independent unconditional: 1285, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4271, independent: 2708, independent conditional: 0, independent unconditional: 2708, dependent: 245, dependent conditional: 0, dependent unconditional: 245, unknown: 1318, unknown conditional: 0, unknown unconditional: 1318] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 243, Positive conditional cache size: 0, Positive unconditional cache size: 243, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 780]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 739]: 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: 789]: 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, 150 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: 4.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 585 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 371 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 809 IncrementalHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 45 mSDtfsCounter, 809 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=9, InterpolantAutomatonStates: 33, 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, 0.6s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 14:56:19,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6420739b-1fed-46b4-923b-986cd7a4c4bb/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