./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/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_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/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_f197c977-2449-4ffb-8b28-1d5f898121e0/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 e946e8dea30db7efb52f6f71a24f03cd895152f9df0eae9d8d1291d135f806ee --- 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 15:54:39,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:54:39,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:54:39,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:54:39,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:54:39,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:54:39,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:54:39,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:54:39,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:54:39,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:54:39,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:54:39,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:54:39,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:54:39,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:54:39,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:54:39,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:54:39,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:54:39,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:54:39,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:54:39,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:54:39,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:54:39,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:54:39,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:54:39,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:54:39,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:54:39,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:54:39,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:54:39,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:54:39,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:54:39,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:54:39,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:54:39,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:54:39,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:54:39,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:54:39,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:54:39,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:54:39,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:54:39,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:54:39,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:54:39,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:54:39,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:54:39,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 15:54:39,142 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:54:39,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:54:39,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:54:39,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:54:39,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:54:39,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:54:39,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:54:39,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:54:39,144 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:54:39,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:54:39,145 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:54:39,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:54:39,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:54:39,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:54:39,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:54:39,145 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:54:39,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:54:39,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:54:39,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:54:39,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:54:39,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:54:39,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:54:39,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:54:39,147 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:54:39,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:54:39,147 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:54:39,147 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_f197c977-2449-4ffb-8b28-1d5f898121e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e946e8dea30db7efb52f6f71a24f03cd895152f9df0eae9d8d1291d135f806ee [2022-12-13 15:54:39,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:54:39,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:54:39,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:54:39,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:54:39,338 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:54:39,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i [2022-12-13 15:54:41,955 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:54:42,140 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:54:42,140 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i [2022-12-13 15:54:42,150 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/data/8f616f20e/c9209adb84634b55841aeb08250c74f6/FLAGeeb7e942b [2022-12-13 15:54:42,161 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/data/8f616f20e/c9209adb84634b55841aeb08250c74f6 [2022-12-13 15:54:42,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:54:42,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:54:42,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:54:42,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:54:42,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:54:42,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760e9825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42, skipping insertion in model container [2022-12-13 15:54:42,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:54:42,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:54:42,367 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_f197c977-2449-4ffb-8b28-1d5f898121e0/sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i[949,962] [2022-12-13 15:54:42,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,503 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,507 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:54:42,526 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:54:42,535 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_f197c977-2449-4ffb-8b28-1d5f898121e0/sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i[949,962] [2022-12-13 15:54:42,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:54:42,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:54:42,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:54:42,593 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:54:42,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42 WrapperNode [2022-12-13 15:54:42,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:54:42,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:54:42,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:54:42,594 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:54:42,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,628 INFO L138 Inliner]: procedures = 177, calls = 89, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 181 [2022-12-13 15:54:42,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:54:42,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:54:42,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:54:42,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:54:42,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:54:42,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:54:42,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:54:42,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:54:42,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (1/1) ... [2022-12-13 15:54:42,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:54:42,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:42,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:54:42,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f197c977-2449-4ffb-8b28-1d5f898121e0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:54:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:54:42,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:54:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:54:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:54:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:54:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:54:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 15:54:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 15:54:42,714 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 15:54:42,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 15:54:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 15:54:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 15:54:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 15:54:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 15:54:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:54:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:54:42,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:54:42,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:54:42,717 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 15:54:42,838 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:54:42,840 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:54:43,340 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:54:43,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:54:43,697 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:54:43,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:54:43 BoogieIcfgContainer [2022-12-13 15:54:43,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:54:43,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:54:43,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:54:43,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:54:43,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:54:42" (1/3) ... [2022-12-13 15:54:43,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7daa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:54:43, skipping insertion in model container [2022-12-13 15:54:43,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:42" (2/3) ... [2022-12-13 15:54:43,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f7daa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:54:43, skipping insertion in model container [2022-12-13 15:54:43,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:54:43" (3/3) ... [2022-12-13 15:54:43,705 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.opt.i [2022-12-13 15:54:43,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:54:43,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-12-13 15:54:43,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:54:43,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:54:43,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 213 transitions, 446 flow [2022-12-13 15:54:43,883 INFO L130 PetriNetUnfolder]: 2/209 cut-off events. [2022-12-13 15:54:43,883 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:54:43,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 2/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 326 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2022-12-13 15:54:43,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 213 transitions, 446 flow [2022-12-13 15:54:43,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 209 transitions, 430 flow [2022-12-13 15:54:43,895 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:54:43,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 209 transitions, 430 flow [2022-12-13 15:54:43,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 209 transitions, 430 flow [2022-12-13 15:54:43,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 209 transitions, 430 flow [2022-12-13 15:54:43,940 INFO L130 PetriNetUnfolder]: 2/209 cut-off events. [2022-12-13 15:54:43,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:54:43,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 2/209 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 323 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2022-12-13 15:54:43,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 10466 [2022-12-13 15:54:53,013 INFO L134 LiptonReduction]: Checked pairs total: 67030 [2022-12-13 15:54:53,013 INFO L136 LiptonReduction]: Total number of compositions: 164 [2022-12-13 15:54:53,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:54:53,028 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;@5b974086, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:54:53,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2022-12-13 15:54:53,029 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 15:54:53,029 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:54:53,029 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:54:53,029 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:54:53,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:54:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1206, now seen corresponding path program 1 times [2022-12-13 15:54:53,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:53,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207011825] [2022-12-13 15:54:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:53,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:53,119 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 15:54:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:53,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207011825] [2022-12-13 15:54:53,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207011825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:53,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:54:53,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:54:53,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393427000] [2022-12-13 15:54:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:53,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:54:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:53,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:54:53,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:54:53,145 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 377 [2022-12-13 15:54:53,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 200 flow. Second operand has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 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 15:54:53,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:54:53,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 377 [2022-12-13 15:54:53,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:55:48,333 INFO L130 PetriNetUnfolder]: 407146/524944 cut-off events. [2022-12-13 15:55:48,334 INFO L131 PetriNetUnfolder]: For 881/881 co-relation queries the response was YES. [2022-12-13 15:55:48,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050859 conditions, 524944 events. 407146/524944 cut-off events. For 881/881 co-relation queries the response was YES. Maximal size of possible extension queue 30993. Compared 3838969 event pairs, 407146 based on Foata normal form. 0/204489 useless extension candidates. Maximal degree in co-relation 1050847. Up to 524132 conditions per place. [2022-12-13 15:55:50,621 INFO L137 encePairwiseOnDemand]: 348/377 looper letters, 58 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2022-12-13 15:55:50,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 256 flow [2022-12-13 15:55:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:55:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:55:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 393 transitions. [2022-12-13 15:55:50,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5212201591511937 [2022-12-13 15:55:50,633 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 393 transitions. [2022-12-13 15:55:50,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 393 transitions. [2022-12-13 15:55:50,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:55:50,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 393 transitions. [2022-12-13 15:55:50,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 196.5) internal successors, (393), 2 states have internal predecessors, (393), 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 15:55:50,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 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 15:55:50,644 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 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 15:55:50,645 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 200 flow. Second operand 2 states and 393 transitions. [2022-12-13 15:55:50,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 256 flow [2022-12-13 15:55:50,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 252 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:55:50,765 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 136 flow [2022-12-13 15:55:50,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2022-12-13 15:55:50,769 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -32 predicate places. [2022-12-13 15:55:50,769 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 136 flow [2022-12-13 15:55:50,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 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 15:55:50,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:55:50,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:55:50,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:55:50,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:55:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:55:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash 36902173, now seen corresponding path program 1 times [2022-12-13 15:55:50,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:55:50,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982746695] [2022-12-13 15:55:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:55:50,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:55:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:55:50,962 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 15:55:50,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:50,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982746695] [2022-12-13 15:55:50,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982746695] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:55:50,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:55:50,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:55:50,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149707249] [2022-12-13 15:55:50,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:55:50,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:55:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:55:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:55:51,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 377 [2022-12-13 15:55:51,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:55:51,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:55:51,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 377 [2022-12-13 15:55:51,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:56:03,084 INFO L130 PetriNetUnfolder]: 89352/116806 cut-off events. [2022-12-13 15:56:03,084 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:56:03,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233998 conditions, 116806 events. 89352/116806 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6090. Compared 751882 event pairs, 89352 based on Foata normal form. 4525/67837 useless extension candidates. Maximal degree in co-relation 233995. Up to 116503 conditions per place. [2022-12-13 15:56:03,535 INFO L137 encePairwiseOnDemand]: 362/377 looper letters, 44 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2022-12-13 15:56:03,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 198 flow [2022-12-13 15:56:03,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:56:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:56:03,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2022-12-13 15:56:03,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4500442086648983 [2022-12-13 15:56:03,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2022-12-13 15:56:03,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2022-12-13 15:56:03,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:56:03,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2022-12-13 15:56:03,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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 15:56:03,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:03,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:03,542 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 136 flow. Second operand 3 states and 509 transitions. [2022-12-13 15:56:03,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 198 flow [2022-12-13 15:56:03,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:56:03,543 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 110 flow [2022-12-13 15:56:03,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2022-12-13 15:56:03,543 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -44 predicate places. [2022-12-13 15:56:03,543 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 110 flow [2022-12-13 15:56:03,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:56:03,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:56:03,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:56:03,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:56:03,544 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:56:03,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 36902172, now seen corresponding path program 1 times [2022-12-13 15:56:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:03,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058064735] [2022-12-13 15:56:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:03,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:03,598 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 15:56:03,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:03,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058064735] [2022-12-13 15:56:03,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058064735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:03,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:03,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:56:03,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710140624] [2022-12-13 15:56:03,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:03,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:56:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:56:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:03,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 377 [2022-12-13 15:56:03,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 15:56:03,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:56:03,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 377 [2022-12-13 15:56:03,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:56:11,404 INFO L130 PetriNetUnfolder]: 62741/88321 cut-off events. [2022-12-13 15:56:11,404 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:56:11,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175655 conditions, 88321 events. 62741/88321 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4969. Compared 630905 event pairs, 34293 based on Foata normal form. 0/64542 useless extension candidates. Maximal degree in co-relation 175651. Up to 46487 conditions per place. [2022-12-13 15:56:11,706 INFO L137 encePairwiseOnDemand]: 350/377 looper letters, 48 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2022-12-13 15:56:11,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 260 flow [2022-12-13 15:56:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:56:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:56:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2022-12-13 15:56:11,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2022-12-13 15:56:11,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2022-12-13 15:56:11,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2022-12-13 15:56:11,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:56:11,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2022-12-13 15:56:11,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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 15:56:11,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:11,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:11,712 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 110 flow. Second operand 3 states and 507 transitions. [2022-12-13 15:56:11,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 260 flow [2022-12-13 15:56:11,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 259 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:56:11,714 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 221 flow [2022-12-13 15:56:11,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2022-12-13 15:56:11,715 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -44 predicate places. [2022-12-13 15:56:11,715 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 221 flow [2022-12-13 15:56:11,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 15:56:11,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:56:11,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:11,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:56:11,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:56:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash -488300948, now seen corresponding path program 1 times [2022-12-13 15:56:11,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:11,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357233272] [2022-12-13 15:56:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:11,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:12,010 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 15:56:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:12,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357233272] [2022-12-13 15:56:12,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357233272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:12,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:12,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:56:12,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301811922] [2022-12-13 15:56:12,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:12,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:56:12,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:12,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:56:12,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:12,018 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 377 [2022-12-13 15:56:12,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 221 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 15:56:12,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:56:12,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 377 [2022-12-13 15:56:12,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:56:20,593 INFO L130 PetriNetUnfolder]: 62654/88058 cut-off events. [2022-12-13 15:56:20,593 INFO L131 PetriNetUnfolder]: For 30072/30977 co-relation queries the response was YES. [2022-12-13 15:56:20,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255097 conditions, 88058 events. 62654/88058 cut-off events. For 30072/30977 co-relation queries the response was YES. Maximal size of possible extension queue 5030. Compared 634807 event pairs, 34005 based on Foata normal form. 0/74578 useless extension candidates. Maximal degree in co-relation 255092. Up to 81361 conditions per place. [2022-12-13 15:56:20,978 INFO L137 encePairwiseOnDemand]: 371/377 looper letters, 85 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2022-12-13 15:56:20,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 543 flow [2022-12-13 15:56:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:56:20,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:56:20,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 530 transitions. [2022-12-13 15:56:20,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46861184792219274 [2022-12-13 15:56:20,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 530 transitions. [2022-12-13 15:56:20,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 530 transitions. [2022-12-13 15:56:20,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:56:20,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 530 transitions. [2022-12-13 15:56:20,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 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 15:56:20,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:20,989 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:20,989 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 221 flow. Second operand 3 states and 530 transitions. [2022-12-13 15:56:20,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 543 flow [2022-12-13 15:56:21,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:56:21,282 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 229 flow [2022-12-13 15:56:21,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2022-12-13 15:56:21,283 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -43 predicate places. [2022-12-13 15:56:21,283 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 229 flow [2022-12-13 15:56:21,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 15:56:21,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:56:21,283 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:21,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:56:21,284 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:56:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash 245230205, now seen corresponding path program 1 times [2022-12-13 15:56:21,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:21,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122819700] [2022-12-13 15:56:21,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:21,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:21,438 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 15:56:21,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:21,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122819700] [2022-12-13 15:56:21,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122819700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:21,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:21,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:56:21,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295219731] [2022-12-13 15:56:21,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:56:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:56:21,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:21,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 377 [2022-12-13 15:56:21,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 15:56:21,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:56:21,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 377 [2022-12-13 15:56:21,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:56:30,961 INFO L130 PetriNetUnfolder]: 73009/101172 cut-off events. [2022-12-13 15:56:30,962 INFO L131 PetriNetUnfolder]: For 23204/23760 co-relation queries the response was YES. [2022-12-13 15:56:31,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277617 conditions, 101172 events. 73009/101172 cut-off events. For 23204/23760 co-relation queries the response was YES. Maximal size of possible extension queue 4512. Compared 699488 event pairs, 19139 based on Foata normal form. 90/75980 useless extension candidates. Maximal degree in co-relation 277611. Up to 92561 conditions per place. [2022-12-13 15:56:31,392 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 91 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2022-12-13 15:56:31,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 564 flow [2022-12-13 15:56:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:56:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:56:31,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 15:56:31,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46065428824049515 [2022-12-13 15:56:31,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 15:56:31,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 15:56:31,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:56:31,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 15:56:31,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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 15:56:31,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:31,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:31,399 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 229 flow. Second operand 3 states and 521 transitions. [2022-12-13 15:56:31,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 564 flow [2022-12-13 15:56:31,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:56:31,405 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 244 flow [2022-12-13 15:56:31,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2022-12-13 15:56:31,405 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -41 predicate places. [2022-12-13 15:56:31,405 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 244 flow [2022-12-13 15:56:31,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 15:56:31,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:56:31,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:31,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:56:31,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:56:31,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:31,407 INFO L85 PathProgramCache]: Analyzing trace with hash 955155986, now seen corresponding path program 1 times [2022-12-13 15:56:31,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:31,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326543092] [2022-12-13 15:56:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:31,479 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 15:56:31,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:31,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326543092] [2022-12-13 15:56:31,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326543092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:31,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:31,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:56:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568887269] [2022-12-13 15:56:31,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:31,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:56:31,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:56:31,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:31,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 377 [2022-12-13 15:56:31,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:56:31,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:56:31,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 377 [2022-12-13 15:56:31,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:56:40,861 INFO L130 PetriNetUnfolder]: 68300/96007 cut-off events. [2022-12-13 15:56:40,861 INFO L131 PetriNetUnfolder]: For 25191/25822 co-relation queries the response was YES. [2022-12-13 15:56:41,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270568 conditions, 96007 events. 68300/96007 cut-off events. For 25191/25822 co-relation queries the response was YES. Maximal size of possible extension queue 4603. Compared 678269 event pairs, 32781 based on Foata normal form. 59/71408 useless extension candidates. Maximal degree in co-relation 270561. Up to 71562 conditions per place. [2022-12-13 15:56:41,283 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 85 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2022-12-13 15:56:41,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 549 flow [2022-12-13 15:56:41,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:56:41,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:56:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2022-12-13 15:56:41,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46595932802829354 [2022-12-13 15:56:41,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2022-12-13 15:56:41,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2022-12-13 15:56:41,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:56:41,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2022-12-13 15:56:41,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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 15:56:41,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:41,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:56:41,288 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 244 flow. Second operand 3 states and 527 transitions. [2022-12-13 15:56:41,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 549 flow [2022-12-13 15:56:41,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 545 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:56:41,293 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 260 flow [2022-12-13 15:56:41,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2022-12-13 15:56:41,293 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -39 predicate places. [2022-12-13 15:56:41,293 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 260 flow [2022-12-13 15:56:41,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:56:41,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:56:41,294 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:41,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:56:41,294 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:56:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1358051211, now seen corresponding path program 1 times [2022-12-13 15:56:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:41,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380226692] [2022-12-13 15:56:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:41,480 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 15:56:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:41,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380226692] [2022-12-13 15:56:41,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380226692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:41,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:41,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:56:41,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628791171] [2022-12-13 15:56:41,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:41,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:56:41,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:41,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:56:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:56:41,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 377 [2022-12-13 15:56:41,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 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 15:56:41,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:56:41,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 377 [2022-12-13 15:56:41,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:56:57,979 INFO L130 PetriNetUnfolder]: 117279/165015 cut-off events. [2022-12-13 15:56:57,980 INFO L131 PetriNetUnfolder]: For 47444/48083 co-relation queries the response was YES. [2022-12-13 15:56:58,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465204 conditions, 165015 events. 117279/165015 cut-off events. For 47444/48083 co-relation queries the response was YES. Maximal size of possible extension queue 8046. Compared 1246480 event pairs, 59835 based on Foata normal form. 0/122071 useless extension candidates. Maximal degree in co-relation 465196. Up to 85587 conditions per place. [2022-12-13 15:56:58,803 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 92 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2022-12-13 15:56:58,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 612 flow [2022-12-13 15:56:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:56:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:56:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 655 transitions. [2022-12-13 15:56:58,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4343501326259947 [2022-12-13 15:56:58,807 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 655 transitions. [2022-12-13 15:56:58,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 655 transitions. [2022-12-13 15:56:58,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:56:58,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 655 transitions. [2022-12-13 15:56:58,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 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 15:56:58,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:56:58,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:56:58,813 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 260 flow. Second operand 4 states and 655 transitions. [2022-12-13 15:56:58,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 612 flow [2022-12-13 15:56:58,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 602 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:56:58,859 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 273 flow [2022-12-13 15:56:58,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2022-12-13 15:56:58,860 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -37 predicate places. [2022-12-13 15:56:58,860 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 273 flow [2022-12-13 15:56:58,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 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 15:56:58,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:56:58,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:58,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:56:58,861 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:56:58,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2042538626, now seen corresponding path program 1 times [2022-12-13 15:56:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:58,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745891836] [2022-12-13 15:56:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:59,002 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 15:56:59,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:56:59,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745891836] [2022-12-13 15:56:59,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745891836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:56:59,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:56:59,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:56:59,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722245633] [2022-12-13 15:56:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:56:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:56:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:56:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:56:59,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:56:59,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 377 [2022-12-13 15:56:59,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 15:56:59,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:56:59,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 377 [2022-12-13 15:56:59,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:57:16,212 INFO L130 PetriNetUnfolder]: 124563/177220 cut-off events. [2022-12-13 15:57:16,212 INFO L131 PetriNetUnfolder]: For 65196/66139 co-relation queries the response was YES. [2022-12-13 15:57:16,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501194 conditions, 177220 events. 124563/177220 cut-off events. For 65196/66139 co-relation queries the response was YES. Maximal size of possible extension queue 9121. Compared 1390219 event pairs, 59500 based on Foata normal form. 581/136552 useless extension candidates. Maximal degree in co-relation 501185. Up to 144349 conditions per place. [2022-12-13 15:57:17,219 INFO L137 encePairwiseOnDemand]: 370/377 looper letters, 70 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2022-12-13 15:57:17,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 501 flow [2022-12-13 15:57:17,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:57:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:57:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-12-13 15:57:17,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4420866489832007 [2022-12-13 15:57:17,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-12-13 15:57:17,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-12-13 15:57:17,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:57:17,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-12-13 15:57:17,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:57:17,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:57:17,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:57:17,225 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 273 flow. Second operand 3 states and 500 transitions. [2022-12-13 15:57:17,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 501 flow [2022-12-13 15:57:17,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:57:17,252 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 317 flow [2022-12-13 15:57:17,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2022-12-13 15:57:17,253 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -37 predicate places. [2022-12-13 15:57:17,253 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 317 flow [2022-12-13 15:57:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 15:57:17,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:57:17,254 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:17,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:57:17,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:57:17,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash 366238955, now seen corresponding path program 2 times [2022-12-13 15:57:17,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:17,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220361216] [2022-12-13 15:57:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:17,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:17,433 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 15:57:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:17,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220361216] [2022-12-13 15:57:17,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220361216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:17,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:17,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:57:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026475901] [2022-12-13 15:57:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:17,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:57:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:57:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:57:17,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 377 [2022-12-13 15:57:17,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 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 15:57:17,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:57:17,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 377 [2022-12-13 15:57:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:57:34,958 INFO L130 PetriNetUnfolder]: 123620/176038 cut-off events. [2022-12-13 15:57:34,958 INFO L131 PetriNetUnfolder]: For 99418/100168 co-relation queries the response was YES. [2022-12-13 15:57:35,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523142 conditions, 176038 events. 123620/176038 cut-off events. For 99418/100168 co-relation queries the response was YES. Maximal size of possible extension queue 9038. Compared 1380485 event pairs, 54200 based on Foata normal form. 291/132463 useless extension candidates. Maximal degree in co-relation 523132. Up to 147299 conditions per place. [2022-12-13 15:57:35,951 INFO L137 encePairwiseOnDemand]: 374/377 looper letters, 87 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2022-12-13 15:57:35,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 99 transitions, 619 flow [2022-12-13 15:57:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:57:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:57:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 656 transitions. [2022-12-13 15:57:35,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4350132625994695 [2022-12-13 15:57:35,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 656 transitions. [2022-12-13 15:57:35,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 656 transitions. [2022-12-13 15:57:35,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:57:35,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 656 transitions. [2022-12-13 15:57:35,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 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 15:57:35,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:57:35,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:57:35,958 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 317 flow. Second operand 4 states and 656 transitions. [2022-12-13 15:57:35,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 99 transitions, 619 flow [2022-12-13 15:57:36,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 605 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:57:36,474 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 305 flow [2022-12-13 15:57:36,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=305, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2022-12-13 15:57:36,474 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -37 predicate places. [2022-12-13 15:57:36,474 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 305 flow [2022-12-13 15:57:36,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 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 15:57:36,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:57:36,475 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:57:36,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:57:36,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:57:36,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:57:36,475 INFO L85 PathProgramCache]: Analyzing trace with hash -455044966, now seen corresponding path program 1 times [2022-12-13 15:57:36,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:57:36,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634992649] [2022-12-13 15:57:36,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:57:36,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:57:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:57:36,622 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 15:57:36,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:57:36,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634992649] [2022-12-13 15:57:36,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634992649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:57:36,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:57:36,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:57:36,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047333694] [2022-12-13 15:57:36,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:57:36,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:57:36,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:57:36,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:57:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:57:36,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 377 [2022-12-13 15:57:36,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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 15:57:36,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:57:36,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 377 [2022-12-13 15:57:36,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:58:08,442 INFO L130 PetriNetUnfolder]: 235108/332178 cut-off events. [2022-12-13 15:58:08,443 INFO L131 PetriNetUnfolder]: For 199972/201522 co-relation queries the response was YES. [2022-12-13 15:58:09,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980944 conditions, 332178 events. 235108/332178 cut-off events. For 199972/201522 co-relation queries the response was YES. Maximal size of possible extension queue 16349. Compared 2766298 event pairs, 57123 based on Foata normal form. 867/249743 useless extension candidates. Maximal degree in co-relation 980935. Up to 165381 conditions per place. [2022-12-13 15:58:10,144 INFO L137 encePairwiseOnDemand]: 372/377 looper letters, 143 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2022-12-13 15:58:10,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 153 transitions, 1009 flow [2022-12-13 15:58:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:58:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:58:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 691 transitions. [2022-12-13 15:58:10,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4582228116710875 [2022-12-13 15:58:10,147 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 691 transitions. [2022-12-13 15:58:10,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 691 transitions. [2022-12-13 15:58:10,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:58:10,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 691 transitions. [2022-12-13 15:58:10,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 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 15:58:10,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:58:10,150 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:58:10,150 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 305 flow. Second operand 4 states and 691 transitions. [2022-12-13 15:58:10,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 153 transitions, 1009 flow [2022-12-13 15:58:11,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 153 transitions, 997 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:58:11,543 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 327 flow [2022-12-13 15:58:11,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2022-12-13 15:58:11,543 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -35 predicate places. [2022-12-13 15:58:11,543 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 327 flow [2022-12-13 15:58:11,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 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 15:58:11,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:58:11,544 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:11,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:58:11,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:58:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1105856518, now seen corresponding path program 2 times [2022-12-13 15:58:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:11,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276637926] [2022-12-13 15:58:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:11,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:11,693 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 15:58:11,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:11,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276637926] [2022-12-13 15:58:11,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276637926] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:11,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:11,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:58:11,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436579758] [2022-12-13 15:58:11,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:11,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:58:11,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:58:11,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:58:11,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 377 [2022-12-13 15:58:11,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 15:58:11,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:58:11,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 377 [2022-12-13 15:58:11,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:58:42,472 INFO L130 PetriNetUnfolder]: 223491/319377 cut-off events. [2022-12-13 15:58:42,472 INFO L131 PetriNetUnfolder]: For 169406/170939 co-relation queries the response was YES. [2022-12-13 15:58:43,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952985 conditions, 319377 events. 223491/319377 cut-off events. For 169406/170939 co-relation queries the response was YES. Maximal size of possible extension queue 16856. Compared 2694157 event pairs, 106844 based on Foata normal form. 63/235954 useless extension candidates. Maximal degree in co-relation 952975. Up to 269161 conditions per place. [2022-12-13 15:58:44,178 INFO L137 encePairwiseOnDemand]: 374/377 looper letters, 88 selfloop transitions, 5 changer transitions 0/100 dead transitions. [2022-12-13 15:58:44,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 636 flow [2022-12-13 15:58:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:58:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:58:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 526 transitions. [2022-12-13 15:58:44,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4650751547303271 [2022-12-13 15:58:44,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 526 transitions. [2022-12-13 15:58:44,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 526 transitions. [2022-12-13 15:58:44,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:58:44,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 526 transitions. [2022-12-13 15:58:44,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 15:58:44,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:58:44,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 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 15:58:44,186 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 327 flow. Second operand 3 states and 526 transitions. [2022-12-13 15:58:44,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 636 flow [2022-12-13 15:58:45,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:58:45,051 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 338 flow [2022-12-13 15:58:45,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2022-12-13 15:58:45,052 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -34 predicate places. [2022-12-13 15:58:45,052 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 338 flow [2022-12-13 15:58:45,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 15:58:45,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:58:45,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:58:45,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:58:45,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:58:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:58:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1105787636, now seen corresponding path program 1 times [2022-12-13 15:58:45,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:58:45,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664806430] [2022-12-13 15:58:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:58:45,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:58:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:58:45,209 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 15:58:45,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:45,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664806430] [2022-12-13 15:58:45,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664806430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:58:45,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:58:45,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:58:45,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117554614] [2022-12-13 15:58:45,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:58:45,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:58:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:58:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:58:45,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 377 [2022-12-13 15:58:45,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 338 flow. Second operand has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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 15:58:45,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:58:45,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 377 [2022-12-13 15:58:45,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:59:11,463 INFO L130 PetriNetUnfolder]: 188819/270008 cut-off events. [2022-12-13 15:59:11,463 INFO L131 PetriNetUnfolder]: For 151115/151155 co-relation queries the response was YES. [2022-12-13 15:59:12,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818256 conditions, 270008 events. 188819/270008 cut-off events. For 151115/151155 co-relation queries the response was YES. Maximal size of possible extension queue 14425. Compared 2215529 event pairs, 66414 based on Foata normal form. 168/202379 useless extension candidates. Maximal degree in co-relation 818245. Up to 136138 conditions per place. [2022-12-13 15:59:13,024 INFO L137 encePairwiseOnDemand]: 354/377 looper letters, 83 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2022-12-13 15:59:13,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 728 flow [2022-12-13 15:59:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:59:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:59:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 642 transitions. [2022-12-13 15:59:13,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42572944297082227 [2022-12-13 15:59:13,027 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 642 transitions. [2022-12-13 15:59:13,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 642 transitions. [2022-12-13 15:59:13,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:59:13,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 642 transitions. [2022-12-13 15:59:13,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 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 15:59:13,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:59:13,030 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 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 15:59:13,030 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 338 flow. Second operand 4 states and 642 transitions. [2022-12-13 15:59:13,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 728 flow [2022-12-13 15:59:13,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 710 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:59:13,548 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 472 flow [2022-12-13 15:59:13,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=472, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2022-12-13 15:59:13,548 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -31 predicate places. [2022-12-13 15:59:13,548 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 472 flow [2022-12-13 15:59:13,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.8) internal successors, (714), 5 states have internal predecessors, (714), 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 15:59:13,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:59:13,549 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:59:13,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:59:13,549 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 15:59:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1735905541, now seen corresponding path program 1 times [2022-12-13 15:59:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:13,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026460647] [2022-12-13 15:59:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:13,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:59:13,708 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 15:59:13,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:59:13,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026460647] [2022-12-13 15:59:13,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026460647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:59:13,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:59:13,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:59:13,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23727977] [2022-12-13 15:59:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:59:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:59:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:59:13,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:59:13,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 377 [2022-12-13 15:59:13,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 472 flow. Second operand has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 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 15:59:13,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:59:13,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 377 [2022-12-13 15:59:13,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:59:58,613 INFO L130 PetriNetUnfolder]: 309840/438347 cut-off events. [2022-12-13 15:59:58,613 INFO L131 PetriNetUnfolder]: For 449231/452259 co-relation queries the response was YES. [2022-12-13 15:59:59,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540251 conditions, 438347 events. 309840/438347 cut-off events. For 449231/452259 co-relation queries the response was YES. Maximal size of possible extension queue 24070. Compared 3769411 event pairs, 91854 based on Foata normal form. 638/370964 useless extension candidates. Maximal degree in co-relation 1540239. Up to 197051 conditions per place. [2022-12-13 16:00:01,256 INFO L137 encePairwiseOnDemand]: 373/377 looper letters, 144 selfloop transitions, 9 changer transitions 0/159 dead transitions. [2022-12-13 16:00:01,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 159 transitions, 1234 flow [2022-12-13 16:00:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:00:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:00:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 694 transitions. [2022-12-13 16:00:01,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46021220159151194 [2022-12-13 16:00:01,258 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 694 transitions. [2022-12-13 16:00:01,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 694 transitions. [2022-12-13 16:00:01,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:00:01,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 694 transitions. [2022-12-13 16:00:01,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:01,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:01,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:01,262 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 472 flow. Second operand 4 states and 694 transitions. [2022-12-13 16:00:01,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 159 transitions, 1234 flow [2022-12-13 16:00:05,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 159 transitions, 1225 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:00:05,970 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 491 flow [2022-12-13 16:00:05,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2022-12-13 16:00:05,971 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -28 predicate places. [2022-12-13 16:00:05,971 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 491 flow [2022-12-13 16:00:05,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:05,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:00:05,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:05,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:00:05,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 16:00:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 480146360, now seen corresponding path program 1 times [2022-12-13 16:00:05,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:05,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764695275] [2022-12-13 16:00:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:05,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:07,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:07,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764695275] [2022-12-13 16:00:07,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764695275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:07,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:07,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:00:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788560499] [2022-12-13 16:00:07,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:07,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:00:07,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:00:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:00:07,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 377 [2022-12-13 16:00:07,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 491 flow. Second operand has 10 states, 10 states have (on average 128.7) internal successors, (1287), 10 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:07,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:00:07,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 377 [2022-12-13 16:00:07,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:00:51,904 INFO L130 PetriNetUnfolder]: 282197/400799 cut-off events. [2022-12-13 16:00:51,905 INFO L131 PetriNetUnfolder]: For 402221/402482 co-relation queries the response was YES. [2022-12-13 16:00:52,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448040 conditions, 400799 events. 282197/400799 cut-off events. For 402221/402482 co-relation queries the response was YES. Maximal size of possible extension queue 24540. Compared 3456094 event pairs, 177698 based on Foata normal form. 44/341874 useless extension candidates. Maximal degree in co-relation 1448026. Up to 398546 conditions per place. [2022-12-13 16:00:54,220 INFO L137 encePairwiseOnDemand]: 363/377 looper letters, 105 selfloop transitions, 34 changer transitions 0/141 dead transitions. [2022-12-13 16:00:54,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 141 transitions, 1067 flow [2022-12-13 16:00:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:00:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:00:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1244 transitions. [2022-12-13 16:00:54,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.36663719422340113 [2022-12-13 16:00:54,223 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1244 transitions. [2022-12-13 16:00:54,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1244 transitions. [2022-12-13 16:00:54,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:00:54,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1244 transitions. [2022-12-13 16:00:54,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.22222222222223) internal successors, (1244), 9 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:54,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 377.0) internal successors, (3770), 10 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:54,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 377.0) internal successors, (3770), 10 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:54,229 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 491 flow. Second operand 9 states and 1244 transitions. [2022-12-13 16:00:54,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 141 transitions, 1067 flow [2022-12-13 16:00:56,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 141 transitions, 1036 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 16:00:56,588 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 755 flow [2022-12-13 16:00:56,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=755, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2022-12-13 16:00:56,589 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -17 predicate places. [2022-12-13 16:00:56,589 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 755 flow [2022-12-13 16:00:56,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.7) internal successors, (1287), 10 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:56,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:00:56,590 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:00:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:00:56,590 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 16:00:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1187037808, now seen corresponding path program 2 times [2022-12-13 16:00:56,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:56,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882033691] [2022-12-13 16:00:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:56,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:58,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:58,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882033691] [2022-12-13 16:00:58,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882033691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:58,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:58,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 16:00:58,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191767916] [2022-12-13 16:00:58,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:58,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:00:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:00:58,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:00:58,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 377 [2022-12-13 16:00:58,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 755 flow. Second operand has 10 states, 10 states have (on average 129.7) internal successors, (1297), 10 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:00:58,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:00:58,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 377 [2022-12-13 16:00:58,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:01:46,474 INFO L130 PetriNetUnfolder]: 284193/404902 cut-off events. [2022-12-13 16:01:46,474 INFO L131 PetriNetUnfolder]: For 459337/459715 co-relation queries the response was YES. [2022-12-13 16:01:47,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499071 conditions, 404902 events. 284193/404902 cut-off events. For 459337/459715 co-relation queries the response was YES. Maximal size of possible extension queue 25054. Compared 3516822 event pairs, 169104 based on Foata normal form. 2234/350145 useless extension candidates. Maximal degree in co-relation 1499052. Up to 372010 conditions per place. [2022-12-13 16:01:49,520 INFO L137 encePairwiseOnDemand]: 354/377 looper letters, 220 selfloop transitions, 96 changer transitions 0/318 dead transitions. [2022-12-13 16:01:49,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 318 transitions, 2694 flow [2022-12-13 16:01:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 16:01:49,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 16:01:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2001 transitions. [2022-12-13 16:01:49,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3791208791208791 [2022-12-13 16:01:49,530 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2001 transitions. [2022-12-13 16:01:49,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2001 transitions. [2022-12-13 16:01:49,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:01:49,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2001 transitions. [2022-12-13 16:01:49,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 142.92857142857142) internal successors, (2001), 14 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:49,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 377.0) internal successors, (5655), 15 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:49,548 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 377.0) internal successors, (5655), 15 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:49,549 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 755 flow. Second operand 14 states and 2001 transitions. [2022-12-13 16:01:49,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 318 transitions, 2694 flow [2022-12-13 16:01:52,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 318 transitions, 2634 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-12-13 16:01:52,734 INFO L231 Difference]: Finished difference. Result has 112 places, 190 transitions, 1792 flow [2022-12-13 16:01:52,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1792, PETRI_PLACES=112, PETRI_TRANSITIONS=190} [2022-12-13 16:01:52,735 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, 6 predicate places. [2022-12-13 16:01:52,735 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 190 transitions, 1792 flow [2022-12-13 16:01:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 129.7) internal successors, (1297), 10 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:52,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:01:52,736 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:01:52,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:01:52,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 16:01:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 80323373, now seen corresponding path program 1 times [2022-12-13 16:01:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87610916] [2022-12-13 16:01:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87610916] [2022-12-13 16:01:52,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87610916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:52,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:01:52,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:01:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25588383] [2022-12-13 16:01:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:52,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:53,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 377 [2022-12-13 16:01:53,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 190 transitions, 1792 flow. Second operand has 7 states, 7 states have (on average 139.14285714285714) internal successors, (974), 7 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:01:53,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:01:53,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 377 [2022-12-13 16:01:53,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:02:36,942 INFO L130 PetriNetUnfolder]: 228176/327203 cut-off events. [2022-12-13 16:02:36,942 INFO L131 PetriNetUnfolder]: For 852123/852483 co-relation queries the response was YES. [2022-12-13 16:02:38,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474237 conditions, 327203 events. 228176/327203 cut-off events. For 852123/852483 co-relation queries the response was YES. Maximal size of possible extension queue 20467. Compared 2792773 event pairs, 76424 based on Foata normal form. 3719/294176 useless extension candidates. Maximal degree in co-relation 1474207. Up to 265883 conditions per place. [2022-12-13 16:02:39,584 INFO L137 encePairwiseOnDemand]: 362/377 looper letters, 239 selfloop transitions, 15 changer transitions 0/259 dead transitions. [2022-12-13 16:02:39,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 259 transitions, 2882 flow [2022-12-13 16:02:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:02:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:02:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 768 transitions. [2022-12-13 16:02:39,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40742705570291776 [2022-12-13 16:02:39,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 768 transitions. [2022-12-13 16:02:39,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 768 transitions. [2022-12-13 16:02:39,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:02:39,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 768 transitions. [2022-12-13 16:02:39,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:02:39,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:02:39,590 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:02:39,590 INFO L175 Difference]: Start difference. First operand has 112 places, 190 transitions, 1792 flow. Second operand 5 states and 768 transitions. [2022-12-13 16:02:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 259 transitions, 2882 flow [2022-12-13 16:04:13,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 259 transitions, 2864 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:13,196 INFO L231 Difference]: Finished difference. Result has 116 places, 190 transitions, 1838 flow [2022-12-13 16:04:13,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1838, PETRI_PLACES=116, PETRI_TRANSITIONS=190} [2022-12-13 16:04:13,197 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, 10 predicate places. [2022-12-13 16:04:13,197 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 190 transitions, 1838 flow [2022-12-13 16:04:13,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.14285714285714) internal successors, (974), 7 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:13,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:13,197 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:13,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:04:13,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 16:04:13,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash -950574411, now seen corresponding path program 1 times [2022-12-13 16:04:13,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:13,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895993368] [2022-12-13 16:04:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:13,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:13,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:13,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895993368] [2022-12-13 16:04:13,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895993368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:13,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:13,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:04:13,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097648958] [2022-12-13 16:04:13,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:04:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:04:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:04:13,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 377 [2022-12-13 16:04:13,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 190 transitions, 1838 flow. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:13,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:13,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 377 [2022-12-13 16:04:13,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:33,477 INFO L130 PetriNetUnfolder]: 96085/145416 cut-off events. [2022-12-13 16:04:33,477 INFO L131 PetriNetUnfolder]: For 404914/405468 co-relation queries the response was YES. [2022-12-13 16:04:34,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664761 conditions, 145416 events. 96085/145416 cut-off events. For 404914/405468 co-relation queries the response was YES. Maximal size of possible extension queue 10402. Compared 1266683 event pairs, 31397 based on Foata normal form. 1807/130846 useless extension candidates. Maximal degree in co-relation 664729. Up to 131048 conditions per place. [2022-12-13 16:04:34,670 INFO L137 encePairwiseOnDemand]: 370/377 looper letters, 217 selfloop transitions, 9 changer transitions 8/266 dead transitions. [2022-12-13 16:04:34,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 266 transitions, 2754 flow [2022-12-13 16:04:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:04:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:04:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 821 transitions. [2022-12-13 16:04:34,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43554376657824934 [2022-12-13 16:04:34,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 821 transitions. [2022-12-13 16:04:34,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 821 transitions. [2022-12-13 16:04:34,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:34,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 821 transitions. [2022-12-13 16:04:34,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:34,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:34,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 377.0) internal successors, (2262), 6 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:34,676 INFO L175 Difference]: Start difference. First operand has 116 places, 190 transitions, 1838 flow. Second operand 5 states and 821 transitions. [2022-12-13 16:04:34,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 266 transitions, 2754 flow [2022-12-13 16:04:52,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 266 transitions, 2710 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 16:04:52,586 INFO L231 Difference]: Finished difference. Result has 119 places, 185 transitions, 1708 flow [2022-12-13 16:04:52,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1708, PETRI_PLACES=119, PETRI_TRANSITIONS=185} [2022-12-13 16:04:52,587 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, 13 predicate places. [2022-12-13 16:04:52,587 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 185 transitions, 1708 flow [2022-12-13 16:04:52,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:52,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:52,587 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] [2022-12-13 16:04:52,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:04:52,587 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 16:04:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash -532087657, now seen corresponding path program 1 times [2022-12-13 16:04:52,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:52,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020789777] [2022-12-13 16:04:52,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:52,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:04:53,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020789777] [2022-12-13 16:04:53,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020789777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:53,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:53,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 16:04:53,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267276082] [2022-12-13 16:04:53,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:53,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:04:53,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:53,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:04:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:04:53,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 377 [2022-12-13 16:04:53,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 185 transitions, 1708 flow. Second operand has 7 states, 7 states have (on average 143.85714285714286) internal successors, (1007), 7 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:04:53,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:53,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 377 [2022-12-13 16:04:53,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:05:24,300 INFO L130 PetriNetUnfolder]: 141007/212818 cut-off events. [2022-12-13 16:05:24,301 INFO L131 PetriNetUnfolder]: For 699668/700407 co-relation queries the response was YES. [2022-12-13 16:05:25,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030429 conditions, 212818 events. 141007/212818 cut-off events. For 699668/700407 co-relation queries the response was YES. Maximal size of possible extension queue 13108. Compared 1915870 event pairs, 46874 based on Foata normal form. 4088/198827 useless extension candidates. Maximal degree in co-relation 1030394. Up to 128115 conditions per place. [2022-12-13 16:05:26,013 INFO L137 encePairwiseOnDemand]: 363/377 looper letters, 270 selfloop transitions, 62 changer transitions 16/351 dead transitions. [2022-12-13 16:05:26,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 351 transitions, 3649 flow [2022-12-13 16:05:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:05:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:05:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 985 transitions. [2022-12-13 16:05:26,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4354553492484527 [2022-12-13 16:05:26,016 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 985 transitions. [2022-12-13 16:05:26,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 985 transitions. [2022-12-13 16:05:26,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:05:26,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 985 transitions. [2022-12-13 16:05:26,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.16666666666666) internal successors, (985), 6 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:26,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:26,019 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 377.0) internal successors, (2639), 7 states have internal predecessors, (2639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:05:26,020 INFO L175 Difference]: Start difference. First operand has 119 places, 185 transitions, 1708 flow. Second operand 6 states and 985 transitions. [2022-12-13 16:05:26,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 351 transitions, 3649 flow