./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/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_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/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_33c837a1-6928-4337-bc79-9e574bb16695/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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- 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 12:28:39,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:28:39,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:28:39,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:28:39,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:28:39,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:28:39,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:28:39,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:28:39,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:28:39,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:28:39,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:28:39,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:28:39,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:28:39,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:28:39,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:28:39,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:28:39,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:28:39,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:28:39,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:28:39,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:28:39,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:28:39,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:28:39,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:28:39,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:28:39,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:28:39,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:28:39,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:28:39,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:28:39,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:28:39,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:28:39,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:28:39,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:28:39,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:28:39,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:28:39,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:28:39,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:28:39,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:28:39,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:28:39,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:28:39,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:28:39,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:28:39,575 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:28:39,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:28:39,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:28:39,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:28:39,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:28:39,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:28:39,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:28:39,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:28:39,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:28:39,599 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:28:39,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:28:39,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:28:39,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:28:39,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:28:39,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:28:39,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:28:39,600 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:28:39,600 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:28:39,601 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:28:39,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:28:39,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:28:39,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:28:39,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:28:39,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:28:39,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:28:39,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:28:39,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:39,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:28:39,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:28:39,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:28:39,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:28:39,603 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:28:39,603 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:28:39,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:28:39,604 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:28:39,604 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_33c837a1-6928-4337-bc79-9e574bb16695/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2022-12-13 12:28:39,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:28:39,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:28:39,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:28:39,818 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:28:39,818 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:28:39,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-12-13 12:28:42,462 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:28:42,670 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:28:42,670 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2022-12-13 12:28:42,682 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/data/ba7fadeea/eacb765f3eab4b5a8508fefdba700009/FLAGb54d131d4 [2022-12-13 12:28:42,693 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/data/ba7fadeea/eacb765f3eab4b5a8508fefdba700009 [2022-12-13 12:28:42,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:28:42,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:28:42,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:42,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:28:42,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:28:42,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:42" (1/1) ... [2022-12-13 12:28:42,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6432450c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:42, skipping insertion in model container [2022-12-13 12:28:42,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:28:42" (1/1) ... [2022-12-13 12:28:42,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:28:42,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:28:42,848 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_33c837a1-6928-4337-bc79-9e574bb16695/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-12-13 12:28:42,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,948 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,968 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,969 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,971 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:42,972 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:42,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:42,981 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:28:42,991 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_33c837a1-6928-4337-bc79-9e574bb16695/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2022-12-13 12:28:43,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,031 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:28:43,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:28:43,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:28:43,057 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:28:43,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43 WrapperNode [2022-12-13 12:28:43,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:28:43,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:43,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:28:43,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:28:43,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,100 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2022-12-13 12:28:43,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:28:43,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:28:43,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:28:43,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:28:43,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,128 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:28:43,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:28:43,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:28:43,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:28:43,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (1/1) ... [2022-12-13 12:28:43,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:28:43,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:28:43,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:28:43,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33c837a1-6928-4337-bc79-9e574bb16695/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:28:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:28:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:28:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:28:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:28:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:28:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:28:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 12:28:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 12:28:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 12:28:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 12:28:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 12:28:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 12:28:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 12:28:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 12:28:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:28:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:28:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:28:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:28:43,193 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 12:28:43,315 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:28:43,316 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:28:43,753 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:28:44,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:28:44,016 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:28:44,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:44 BoogieIcfgContainer [2022-12-13 12:28:44,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:28:44,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:28:44,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:28:44,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:28:44,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:28:42" (1/3) ... [2022-12-13 12:28:44,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdf7b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:44, skipping insertion in model container [2022-12-13 12:28:44,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:28:43" (2/3) ... [2022-12-13 12:28:44,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdf7b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:28:44, skipping insertion in model container [2022-12-13 12:28:44,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:28:44" (3/3) ... [2022-12-13 12:28:44,024 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2022-12-13 12:28:44,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:28:44,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-12-13 12:28:44,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:28:44,146 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 12:28:44,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 207 transitions, 434 flow [2022-12-13 12:28:44,248 INFO L130 PetriNetUnfolder]: 2/203 cut-off events. [2022-12-13 12:28:44,248 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:44,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 2/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 299 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2022-12-13 12:28:44,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 207 transitions, 434 flow [2022-12-13 12:28:44,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 203 transitions, 418 flow [2022-12-13 12:28:44,266 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:28:44,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 214 places, 203 transitions, 418 flow [2022-12-13 12:28:44,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 214 places, 203 transitions, 418 flow [2022-12-13 12:28:44,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 203 transitions, 418 flow [2022-12-13 12:28:44,328 INFO L130 PetriNetUnfolder]: 2/203 cut-off events. [2022-12-13 12:28:44,328 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 203 events. 2/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 299 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2022-12-13 12:28:44,334 INFO L119 LiptonReduction]: Number of co-enabled transitions 10234 [2022-12-13 12:28:53,033 INFO L134 LiptonReduction]: Checked pairs total: 60362 [2022-12-13 12:28:53,033 INFO L136 LiptonReduction]: Total number of compositions: 165 [2022-12-13 12:28:53,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:28:53,053 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;@606fc7bb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:28:53,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2022-12-13 12:28:53,055 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 12:28:53,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:28:53,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:28:53,056 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:28:53,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:28:53,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:28:53,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1151, now seen corresponding path program 1 times [2022-12-13 12:28:53,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:28:53,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462639833] [2022-12-13 12:28:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:28:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:28:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:28:53,163 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 12:28:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:28:53,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462639833] [2022-12-13 12:28:53,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462639833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:28:53,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:28:53,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:28:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984520228] [2022-12-13 12:28:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:28:53,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:28:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:28:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:28:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:28:53,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 372 [2022-12-13 12:28:53,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 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 12:28:53,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:28:53,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 372 [2022-12-13 12:28:53,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:30,335 INFO L130 PetriNetUnfolder]: 286548/370267 cut-off events. [2022-12-13 12:29:30,335 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-13 12:29:30,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741754 conditions, 370267 events. 286548/370267 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 20433. Compared 2537467 event pairs, 286548 based on Foata normal form. 4800/162953 useless extension candidates. Maximal degree in co-relation 741742. Up to 370148 conditions per place. [2022-12-13 12:29:31,910 INFO L137 encePairwiseOnDemand]: 343/372 looper letters, 57 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2022-12-13 12:29:31,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 242 flow [2022-12-13 12:29:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:29:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:29:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 388 transitions. [2022-12-13 12:29:31,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.521505376344086 [2022-12-13 12:29:31,924 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 388 transitions. [2022-12-13 12:29:31,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 388 transitions. [2022-12-13 12:29:31,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:31,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 388 transitions. [2022-12-13 12:29:31,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 194.0) internal successors, (388), 2 states have internal predecessors, (388), 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 12:29:31,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 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 12:29:31,936 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 372.0) internal successors, (1116), 3 states have internal predecessors, (1116), 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 12:29:31,937 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 2 states and 388 transitions. [2022-12-13 12:29:31,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 242 flow [2022-12-13 12:29:32,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:29:32,022 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 124 flow [2022-12-13 12:29:32,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2022-12-13 12:29:32,026 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -31 predicate places. [2022-12-13 12:29:32,026 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 124 flow [2022-12-13 12:29:32,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 151.5) internal successors, (303), 2 states have internal predecessors, (303), 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 12:29:32,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:32,027 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:29:32,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:29:32,027 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:29:32,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:32,028 INFO L85 PathProgramCache]: Analyzing trace with hash 35174851, now seen corresponding path program 1 times [2022-12-13 12:29:32,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:32,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105059775] [2022-12-13 12:29:32,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:32,214 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 12:29:32,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:32,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105059775] [2022-12-13 12:29:32,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105059775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:32,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:32,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:29:32,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772443766] [2022-12-13 12:29:32,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:32,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:32,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:32,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 372 [2022-12-13 12:29:32,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 124 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 12:29:32,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:32,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 372 [2022-12-13 12:29:32,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:29:54,443 INFO L130 PetriNetUnfolder]: 179595/242021 cut-off events. [2022-12-13 12:29:54,443 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:29:54,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482747 conditions, 242021 events. 179595/242021 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12099. Compared 1758820 event pairs, 105445 based on Foata normal form. 0/132630 useless extension candidates. Maximal degree in co-relation 482744. Up to 135081 conditions per place. [2022-12-13 12:29:55,499 INFO L137 encePairwiseOnDemand]: 349/372 looper letters, 68 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2022-12-13 12:29:55,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 330 flow [2022-12-13 12:29:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:29:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:29:55,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-12-13 12:29:55,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46863799283154123 [2022-12-13 12:29:55,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-12-13 12:29:55,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-12-13 12:29:55,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:29:55,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-12-13 12:29:55,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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 12:29:55,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:29:55,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:29:55,506 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 124 flow. Second operand 3 states and 523 transitions. [2022-12-13 12:29:55,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 330 flow [2022-12-13 12:29:55,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:29:55,508 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 226 flow [2022-12-13 12:29:55,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2022-12-13 12:29:55,509 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -29 predicate places. [2022-12-13 12:29:55,509 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 226 flow [2022-12-13 12:29:55,509 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 12:29:55,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:29:55,510 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:29:55,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:29:55,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:29:55,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:29:55,510 INFO L85 PathProgramCache]: Analyzing trace with hash 35174852, now seen corresponding path program 1 times [2022-12-13 12:29:55,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:29:55,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764149226] [2022-12-13 12:29:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:29:55,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:29:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:29:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:29:55,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:29:55,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764149226] [2022-12-13 12:29:55,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764149226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:29:55,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:29:55,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:29:55,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577242671] [2022-12-13 12:29:55,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:29:55,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:29:55,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:29:55,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:29:55,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:29:55,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 372 [2022-12-13 12:29:55,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 12:29:55,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:29:55,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 372 [2022-12-13 12:29:55,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:02,160 INFO L130 PetriNetUnfolder]: 41300/58073 cut-off events. [2022-12-13 12:30:02,161 INFO L131 PetriNetUnfolder]: For 17273/17273 co-relation queries the response was YES. [2022-12-13 12:30:02,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165423 conditions, 58073 events. 41300/58073 cut-off events. For 17273/17273 co-relation queries the response was YES. Maximal size of possible extension queue 3213. Compared 392302 event pairs, 30333 based on Foata normal form. 16085/67045 useless extension candidates. Maximal degree in co-relation 165418. Up to 57341 conditions per place. [2022-12-13 12:30:02,416 INFO L137 encePairwiseOnDemand]: 360/372 looper letters, 52 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2022-12-13 12:30:02,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 312 flow [2022-12-13 12:30:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:30:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:30:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2022-12-13 12:30:02,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.449820788530466 [2022-12-13 12:30:02,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2022-12-13 12:30:02,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2022-12-13 12:30:02,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:02,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2022-12-13 12:30:02,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 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 12:30:02,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:30:02,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:30:02,423 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 226 flow. Second operand 3 states and 502 transitions. [2022-12-13 12:30:02,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 312 flow [2022-12-13 12:30:02,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:30:02,573 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2022-12-13 12:30:02,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2022-12-13 12:30:02,574 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -40 predicate places. [2022-12-13 12:30:02,574 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2022-12-13 12:30:02,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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 12:30:02,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:02,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:02,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:30:02,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:30:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:02,575 INFO L85 PathProgramCache]: Analyzing trace with hash -73142321, now seen corresponding path program 1 times [2022-12-13 12:30:02,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:02,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202635928] [2022-12-13 12:30:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:02,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:02,706 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 12:30:02,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202635928] [2022-12-13 12:30:02,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202635928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:02,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:02,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:30:02,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055097457] [2022-12-13 12:30:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:02,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:30:02,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:30:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:30:02,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 372 [2022-12-13 12:30:02,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 12:30:02,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:02,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 372 [2022-12-13 12:30:02,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:09,426 INFO L130 PetriNetUnfolder]: 40116/57191 cut-off events. [2022-12-13 12:30:09,426 INFO L131 PetriNetUnfolder]: For 6185/6185 co-relation queries the response was YES. [2022-12-13 12:30:09,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150070 conditions, 57191 events. 40116/57191 cut-off events. For 6185/6185 co-relation queries the response was YES. Maximal size of possible extension queue 3267. Compared 400463 event pairs, 14272 based on Foata normal form. 0/43583 useless extension candidates. Maximal degree in co-relation 150065. Up to 42685 conditions per place. [2022-12-13 12:30:09,671 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 85 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2022-12-13 12:30:09,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 474 flow [2022-12-13 12:30:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:30:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:30:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-12-13 12:30:09,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2022-12-13 12:30:09,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-12-13 12:30:09,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-12-13 12:30:09,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:09,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-12-13 12:30:09,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 12:30:09,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:30:09,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:30:09,677 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 3 states and 522 transitions. [2022-12-13 12:30:09,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 474 flow [2022-12-13 12:30:09,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:30:09,679 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 192 flow [2022-12-13 12:30:09,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2022-12-13 12:30:09,679 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -39 predicate places. [2022-12-13 12:30:09,680 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 192 flow [2022-12-13 12:30:09,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 12:30:09,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:09,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:09,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:30:09,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:30:09,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:09,681 INFO L85 PathProgramCache]: Analyzing trace with hash -73141911, now seen corresponding path program 1 times [2022-12-13 12:30:09,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:09,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308312460] [2022-12-13 12:30:09,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:09,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:09,910 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 12:30:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:09,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308312460] [2022-12-13 12:30:09,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308312460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:09,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:09,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:30:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426508487] [2022-12-13 12:30:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:09,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:30:09,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:09,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:30:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:30:09,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 372 [2022-12-13 12:30:09,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 12:30:09,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:09,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 372 [2022-12-13 12:30:09,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:16,777 INFO L130 PetriNetUnfolder]: 47536/65773 cut-off events. [2022-12-13 12:30:16,777 INFO L131 PetriNetUnfolder]: For 11255/11255 co-relation queries the response was YES. [2022-12-13 12:30:16,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178202 conditions, 65773 events. 47536/65773 cut-off events. For 11255/11255 co-relation queries the response was YES. Maximal size of possible extension queue 2873. Compared 420258 event pairs, 16633 based on Foata normal form. 0/51865 useless extension candidates. Maximal degree in co-relation 178196. Up to 63882 conditions per place. [2022-12-13 12:30:17,066 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 82 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2022-12-13 12:30:17,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 480 flow [2022-12-13 12:30:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:30:17,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:30:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-12-13 12:30:17,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2022-12-13 12:30:17,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-12-13 12:30:17,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-12-13 12:30:17,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:17,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-12-13 12:30:17,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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 12:30:17,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:30:17,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:30:17,071 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 192 flow. Second operand 3 states and 516 transitions. [2022-12-13 12:30:17,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 480 flow [2022-12-13 12:30:17,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:30:17,083 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 218 flow [2022-12-13 12:30:17,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2022-12-13 12:30:17,084 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -38 predicate places. [2022-12-13 12:30:17,084 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 218 flow [2022-12-13 12:30:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 12:30:17,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:17,085 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:30:17,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:30:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash 2027566634, now seen corresponding path program 1 times [2022-12-13 12:30:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558767632] [2022-12-13 12:30:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:17,210 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 12:30:17,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:17,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558767632] [2022-12-13 12:30:17,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558767632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:17,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:17,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:30:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581866118] [2022-12-13 12:30:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:17,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:30:17,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:30:17,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:30:17,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 372 [2022-12-13 12:30:17,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 12:30:17,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:17,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 372 [2022-12-13 12:30:17,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:26,564 INFO L130 PetriNetUnfolder]: 67812/95293 cut-off events. [2022-12-13 12:30:26,565 INFO L131 PetriNetUnfolder]: For 17927/17927 co-relation queries the response was YES. [2022-12-13 12:30:26,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262813 conditions, 95293 events. 67812/95293 cut-off events. For 17927/17927 co-relation queries the response was YES. Maximal size of possible extension queue 5550. Compared 688547 event pairs, 36325 based on Foata normal form. 0/74077 useless extension candidates. Maximal degree in co-relation 262806. Up to 52613 conditions per place. [2022-12-13 12:30:26,985 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 91 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2022-12-13 12:30:26,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 556 flow [2022-12-13 12:30:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:30:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:30:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 652 transitions. [2022-12-13 12:30:26,989 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4381720430107527 [2022-12-13 12:30:26,989 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 652 transitions. [2022-12-13 12:30:26,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 652 transitions. [2022-12-13 12:30:26,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:26,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 652 transitions. [2022-12-13 12:30:26,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 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 12:30:26,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:30:27,001 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:30:27,001 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 218 flow. Second operand 4 states and 652 transitions. [2022-12-13 12:30:27,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 556 flow [2022-12-13 12:30:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:30:27,008 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 237 flow [2022-12-13 12:30:27,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2022-12-13 12:30:27,009 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -35 predicate places. [2022-12-13 12:30:27,010 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 237 flow [2022-12-13 12:30:27,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 12:30:27,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:27,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:30:27,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:30:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2027566633, now seen corresponding path program 1 times [2022-12-13 12:30:27,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:27,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045518452] [2022-12-13 12:30:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:27,172 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 12:30:27,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045518452] [2022-12-13 12:30:27,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045518452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:27,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:27,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:30:27,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364784756] [2022-12-13 12:30:27,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:27,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:30:27,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:27,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:30:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:30:27,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 372 [2022-12-13 12:30:27,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 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 12:30:27,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:27,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 372 [2022-12-13 12:30:27,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:36,163 INFO L130 PetriNetUnfolder]: 63329/89966 cut-off events. [2022-12-13 12:30:36,163 INFO L131 PetriNetUnfolder]: For 31402/31402 co-relation queries the response was YES. [2022-12-13 12:30:36,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247731 conditions, 89966 events. 63329/89966 cut-off events. For 31402/31402 co-relation queries the response was YES. Maximal size of possible extension queue 4994. Compared 654834 event pairs, 30070 based on Foata normal form. 384/73592 useless extension candidates. Maximal degree in co-relation 247723. Up to 71029 conditions per place. [2022-12-13 12:30:36,574 INFO L137 encePairwiseOnDemand]: 363/372 looper letters, 67 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2022-12-13 12:30:36,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 453 flow [2022-12-13 12:30:36,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:30:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:30:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 650 transitions. [2022-12-13 12:30:36,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4368279569892473 [2022-12-13 12:30:36,576 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 650 transitions. [2022-12-13 12:30:36,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 650 transitions. [2022-12-13 12:30:36,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:36,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 650 transitions. [2022-12-13 12:30:36,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 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 12:30:36,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:30:36,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:30:36,580 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 237 flow. Second operand 4 states and 650 transitions. [2022-12-13 12:30:36,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 453 flow [2022-12-13 12:30:36,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:30:36,588 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 281 flow [2022-12-13 12:30:36,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2022-12-13 12:30:36,589 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -35 predicate places. [2022-12-13 12:30:36,589 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 281 flow [2022-12-13 12:30:36,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.75) internal successors, (599), 4 states have internal predecessors, (599), 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 12:30:36,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:36,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:36,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:30:36,590 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:30:36,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:36,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2027567044, now seen corresponding path program 1 times [2022-12-13 12:30:36,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:36,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735238840] [2022-12-13 12:30:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:36,843 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 12:30:36,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:36,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735238840] [2022-12-13 12:30:36,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735238840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:36,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:36,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:30:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34304195] [2022-12-13 12:30:36,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:36,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:30:36,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:30:36,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:30:36,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 372 [2022-12-13 12:30:36,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 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 12:30:36,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:36,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 372 [2022-12-13 12:30:36,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:47,607 INFO L130 PetriNetUnfolder]: 78886/109883 cut-off events. [2022-12-13 12:30:47,607 INFO L131 PetriNetUnfolder]: For 59247/59247 co-relation queries the response was YES. [2022-12-13 12:30:47,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318176 conditions, 109883 events. 78886/109883 cut-off events. For 59247/59247 co-relation queries the response was YES. Maximal size of possible extension queue 4957. Compared 770072 event pairs, 17212 based on Foata normal form. 32/90199 useless extension candidates. Maximal degree in co-relation 318167. Up to 105416 conditions per place. [2022-12-13 12:30:48,212 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 118 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2022-12-13 12:30:48,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 124 transitions, 786 flow [2022-12-13 12:30:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:30:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:30:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 683 transitions. [2022-12-13 12:30:48,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.459005376344086 [2022-12-13 12:30:48,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 683 transitions. [2022-12-13 12:30:48,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 683 transitions. [2022-12-13 12:30:48,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:48,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 683 transitions. [2022-12-13 12:30:48,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 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 12:30:48,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:30:48,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:30:48,221 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 281 flow. Second operand 4 states and 683 transitions. [2022-12-13 12:30:48,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 124 transitions, 786 flow [2022-12-13 12:30:48,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 124 transitions, 770 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:30:48,475 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 298 flow [2022-12-13 12:30:48,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2022-12-13 12:30:48,476 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -33 predicate places. [2022-12-13 12:30:48,476 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 298 flow [2022-12-13 12:30:48,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.75) internal successors, (607), 4 states have internal predecessors, (607), 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 12:30:48,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:48,477 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:30:48,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:30:48,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1755217824, now seen corresponding path program 2 times [2022-12-13 12:30:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:48,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969108560] [2022-12-13 12:30:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:48,641 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 12:30:48,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:48,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969108560] [2022-12-13 12:30:48,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969108560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:48,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:48,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:30:48,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649390999] [2022-12-13 12:30:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:48,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:30:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:30:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:30:48,759 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 372 [2022-12-13 12:30:48,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 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 12:30:48,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:48,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 372 [2022-12-13 12:30:48,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:30:58,886 INFO L130 PetriNetUnfolder]: 71900/101965 cut-off events. [2022-12-13 12:30:58,886 INFO L131 PetriNetUnfolder]: For 59275/59275 co-relation queries the response was YES. [2022-12-13 12:30:59,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302232 conditions, 101965 events. 71900/101965 cut-off events. For 59275/59275 co-relation queries the response was YES. Maximal size of possible extension queue 5033. Compared 733164 event pairs, 20258 based on Foata normal form. 240/82930 useless extension candidates. Maximal degree in co-relation 302222. Up to 67954 conditions per place. [2022-12-13 12:30:59,650 INFO L137 encePairwiseOnDemand]: 364/372 looper letters, 94 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2022-12-13 12:30:59,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 106 transitions, 665 flow [2022-12-13 12:30:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:30:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:30:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 773 transitions. [2022-12-13 12:30:59,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41559139784946236 [2022-12-13 12:30:59,652 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 773 transitions. [2022-12-13 12:30:59,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 773 transitions. [2022-12-13 12:30:59,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:30:59,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 773 transitions. [2022-12-13 12:30:59,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 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 12:30:59,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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 12:30:59,656 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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 12:30:59,656 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 298 flow. Second operand 5 states and 773 transitions. [2022-12-13 12:30:59,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 106 transitions, 665 flow [2022-12-13 12:30:59,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 106 transitions, 647 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 12:30:59,803 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 297 flow [2022-12-13 12:30:59,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2022-12-13 12:30:59,804 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -33 predicate places. [2022-12-13 12:30:59,804 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 297 flow [2022-12-13 12:30:59,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.5) internal successors, (843), 6 states have internal predecessors, (843), 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 12:30:59,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:30:59,804 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:30:59,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:30:59,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:30:59,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:30:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2024732466, now seen corresponding path program 1 times [2022-12-13 12:30:59,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:30:59,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283186750] [2022-12-13 12:30:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:30:59,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:30:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:30:59,923 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 12:30:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:30:59,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283186750] [2022-12-13 12:30:59,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283186750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:30:59,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:30:59,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:30:59,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055148849] [2022-12-13 12:30:59,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:30:59,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:30:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:30:59,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:30:59,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:30:59,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 372 [2022-12-13 12:30:59,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 12:30:59,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:30:59,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 372 [2022-12-13 12:30:59,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:10,203 INFO L130 PetriNetUnfolder]: 71665/101508 cut-off events. [2022-12-13 12:31:10,203 INFO L131 PetriNetUnfolder]: For 72641/72851 co-relation queries the response was YES. [2022-12-13 12:31:10,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301946 conditions, 101508 events. 71665/101508 cut-off events. For 72641/72851 co-relation queries the response was YES. Maximal size of possible extension queue 5002. Compared 735409 event pairs, 31813 based on Foata normal form. 12/82105 useless extension candidates. Maximal degree in co-relation 301937. Up to 98634 conditions per place. [2022-12-13 12:31:10,825 INFO L137 encePairwiseOnDemand]: 368/372 looper letters, 95 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2022-12-13 12:31:10,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 103 transitions, 687 flow [2022-12-13 12:31:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-12-13 12:31:10,827 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2022-12-13 12:31:10,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-12-13 12:31:10,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-12-13 12:31:10,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:10,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-12-13 12:31:10,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 12:31:10,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:10,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:10,830 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 297 flow. Second operand 3 states and 522 transitions. [2022-12-13 12:31:10,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 103 transitions, 687 flow [2022-12-13 12:31:10,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 103 transitions, 664 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 12:31:10,979 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 358 flow [2022-12-13 12:31:10,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2022-12-13 12:31:10,980 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -33 predicate places. [2022-12-13 12:31:10,980 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 358 flow [2022-12-13 12:31:10,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 12:31:10,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:10,980 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:31:10,981 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:31:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1657803788, now seen corresponding path program 1 times [2022-12-13 12:31:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:10,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046666973] [2022-12-13 12:31:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:11,089 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 12:31:11,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:11,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046666973] [2022-12-13 12:31:11,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046666973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:11,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:11,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:31:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595975586] [2022-12-13 12:31:11,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:11,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:11,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:11,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:11,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:11,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 372 [2022-12-13 12:31:11,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 358 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 12:31:11,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:11,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 372 [2022-12-13 12:31:11,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:21,237 INFO L130 PetriNetUnfolder]: 71748/101765 cut-off events. [2022-12-13 12:31:21,237 INFO L131 PetriNetUnfolder]: For 70072/70072 co-relation queries the response was YES. [2022-12-13 12:31:21,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309620 conditions, 101765 events. 71748/101765 cut-off events. For 70072/70072 co-relation queries the response was YES. Maximal size of possible extension queue 5013. Compared 733213 event pairs, 28544 based on Foata normal form. 36/82526 useless extension candidates. Maximal degree in co-relation 309610. Up to 87547 conditions per place. [2022-12-13 12:31:21,831 INFO L137 encePairwiseOnDemand]: 369/372 looper letters, 86 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2022-12-13 12:31:21,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 662 flow [2022-12-13 12:31:21,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:21,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:21,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2022-12-13 12:31:21,833 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4659498207885305 [2022-12-13 12:31:21,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2022-12-13 12:31:21,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2022-12-13 12:31:21,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:21,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2022-12-13 12:31:21,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 12:31:21,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:21,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:21,836 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 358 flow. Second operand 3 states and 520 transitions. [2022-12-13 12:31:21,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 662 flow [2022-12-13 12:31:22,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:31:22,027 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 381 flow [2022-12-13 12:31:22,027 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2022-12-13 12:31:22,028 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -31 predicate places. [2022-12-13 12:31:22,028 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 381 flow [2022-12-13 12:31:22,028 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 12:31:22,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:22,028 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:22,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:31:22,028 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:31:22,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:22,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1569935187, now seen corresponding path program 1 times [2022-12-13 12:31:22,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:22,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963064025] [2022-12-13 12:31:22,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:22,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:22,130 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 12:31:22,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:22,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963064025] [2022-12-13 12:31:22,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963064025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:22,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:22,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:31:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574276668] [2022-12-13 12:31:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:22,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 372 [2022-12-13 12:31:22,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 12:31:22,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:22,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 372 [2022-12-13 12:31:22,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:32,454 INFO L130 PetriNetUnfolder]: 71160/100827 cut-off events. [2022-12-13 12:31:32,454 INFO L131 PetriNetUnfolder]: For 83734/83944 co-relation queries the response was YES. [2022-12-13 12:31:32,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310595 conditions, 100827 events. 71160/100827 cut-off events. For 83734/83944 co-relation queries the response was YES. Maximal size of possible extension queue 4996. Compared 730784 event pairs, 33461 based on Foata normal form. 120/81528 useless extension candidates. Maximal degree in co-relation 310584. Up to 84325 conditions per place. [2022-12-13 12:31:33,020 INFO L137 encePairwiseOnDemand]: 369/372 looper letters, 110 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2022-12-13 12:31:33,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 115 transitions, 804 flow [2022-12-13 12:31:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-12-13 12:31:33,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668458781362007 [2022-12-13 12:31:33,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-12-13 12:31:33,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-12-13 12:31:33,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:33,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-12-13 12:31:33,023 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 12:31:33,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:33,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:33,025 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 381 flow. Second operand 3 states and 521 transitions. [2022-12-13 12:31:33,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 115 transitions, 804 flow [2022-12-13 12:31:33,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 115 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:31:33,188 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 374 flow [2022-12-13 12:31:33,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2022-12-13 12:31:33,188 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -30 predicate places. [2022-12-13 12:31:33,189 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 374 flow [2022-12-13 12:31:33,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 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 12:31:33,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:33,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:31:33,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:31:33,189 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:31:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1569895060, now seen corresponding path program 1 times [2022-12-13 12:31:33,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:33,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634713635] [2022-12-13 12:31:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:33,271 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 12:31:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:33,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634713635] [2022-12-13 12:31:33,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634713635] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:33,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:33,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:31:33,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30981407] [2022-12-13 12:31:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:33,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:31:33,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:31:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:31:33,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 372 [2022-12-13 12:31:33,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 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 12:31:33,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:33,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 372 [2022-12-13 12:31:33,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:42,538 INFO L130 PetriNetUnfolder]: 61437/87202 cut-off events. [2022-12-13 12:31:42,538 INFO L131 PetriNetUnfolder]: For 72648/72648 co-relation queries the response was YES. [2022-12-13 12:31:42,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276122 conditions, 87202 events. 61437/87202 cut-off events. For 72648/72648 co-relation queries the response was YES. Maximal size of possible extension queue 4519. Compared 615780 event pairs, 19634 based on Foata normal form. 64/70791 useless extension candidates. Maximal degree in co-relation 276110. Up to 39538 conditions per place. [2022-12-13 12:31:43,017 INFO L137 encePairwiseOnDemand]: 353/372 looper letters, 82 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2022-12-13 12:31:43,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 800 flow [2022-12-13 12:31:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:31:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:31:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 635 transitions. [2022-12-13 12:31:43,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.426747311827957 [2022-12-13 12:31:43,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 635 transitions. [2022-12-13 12:31:43,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 635 transitions. [2022-12-13 12:31:43,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:43,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 635 transitions. [2022-12-13 12:31:43,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 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 12:31:43,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:31:43,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:31:43,023 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 374 flow. Second operand 4 states and 635 transitions. [2022-12-13 12:31:43,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 800 flow [2022-12-13 12:31:43,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 786 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:31:43,134 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 539 flow [2022-12-13 12:31:43,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2022-12-13 12:31:43,135 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -27 predicate places. [2022-12-13 12:31:43,135 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 539 flow [2022-12-13 12:31:43,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 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 12:31:43,135 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:31:43,135 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 12:31:43,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:31:43,136 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:31:43,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:31:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1724785111, now seen corresponding path program 1 times [2022-12-13 12:31:43,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:31:43,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075028439] [2022-12-13 12:31:43,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:31:43,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:31:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:31:43,247 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 12:31:43,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:31:43,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075028439] [2022-12-13 12:31:43,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075028439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:31:43,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:31:43,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:31:43,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389222048] [2022-12-13 12:31:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:31:43,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:31:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:31:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:31:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:31:43,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 372 [2022-12-13 12:31:43,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 12:31:43,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:31:43,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 372 [2022-12-13 12:31:43,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:31:58,375 INFO L130 PetriNetUnfolder]: 100129/140490 cut-off events. [2022-12-13 12:31:58,375 INFO L131 PetriNetUnfolder]: For 164385/164385 co-relation queries the response was YES. [2022-12-13 12:31:58,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495504 conditions, 140490 events. 100129/140490 cut-off events. For 164385/164385 co-relation queries the response was YES. Maximal size of possible extension queue 7008. Compared 1034335 event pairs, 32914 based on Foata normal form. 288/127271 useless extension candidates. Maximal degree in co-relation 495491. Up to 76835 conditions per place. [2022-12-13 12:31:59,205 INFO L137 encePairwiseOnDemand]: 369/372 looper letters, 119 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2022-12-13 12:31:59,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 122 transitions, 1044 flow [2022-12-13 12:31:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:31:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:31:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-12-13 12:31:59,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4614695340501792 [2022-12-13 12:31:59,207 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-12-13 12:31:59,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-12-13 12:31:59,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:31:59,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-12-13 12:31:59,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 12:31:59,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:59,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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 12:31:59,210 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 539 flow. Second operand 3 states and 515 transitions. [2022-12-13 12:31:59,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 122 transitions, 1044 flow [2022-12-13 12:32:00,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 122 transitions, 1037 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:00,084 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 546 flow [2022-12-13 12:32:00,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2022-12-13 12:32:00,085 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -25 predicate places. [2022-12-13 12:32:00,085 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 546 flow [2022-12-13 12:32:00,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 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 12:32:00,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:00,085 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 12:32:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:32:00,085 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:32:00,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash 630608591, now seen corresponding path program 1 times [2022-12-13 12:32:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:00,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075737596] [2022-12-13 12:32:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:00,194 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 12:32:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075737596] [2022-12-13 12:32:00,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075737596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:00,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:00,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:32:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570519916] [2022-12-13 12:32:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:00,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:32:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:32:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:32:00,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 372 [2022-12-13 12:32:00,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 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 12:32:00,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:00,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 372 [2022-12-13 12:32:00,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:27,404 INFO L130 PetriNetUnfolder]: 172326/242978 cut-off events. [2022-12-13 12:32:27,405 INFO L131 PetriNetUnfolder]: For 335859/335859 co-relation queries the response was YES. [2022-12-13 12:32:28,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871204 conditions, 242978 events. 172326/242978 cut-off events. For 335859/335859 co-relation queries the response was YES. Maximal size of possible extension queue 12336. Compared 1942699 event pairs, 34191 based on Foata normal form. 288/219251 useless extension candidates. Maximal degree in co-relation 871189. Up to 127125 conditions per place. [2022-12-13 12:32:28,806 INFO L137 encePairwiseOnDemand]: 367/372 looper letters, 160 selfloop transitions, 6 changer transitions 0/166 dead transitions. [2022-12-13 12:32:28,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 166 transitions, 1422 flow [2022-12-13 12:32:28,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:32:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:32:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 682 transitions. [2022-12-13 12:32:28,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-12-13 12:32:28,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 682 transitions. [2022-12-13 12:32:28,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 682 transitions. [2022-12-13 12:32:28,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:28,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 682 transitions. [2022-12-13 12:32:28,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:32:28,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:32:28,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 372.0) internal successors, (1860), 5 states have internal predecessors, (1860), 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 12:32:28,813 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 546 flow. Second operand 4 states and 682 transitions. [2022-12-13 12:32:28,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 166 transitions, 1422 flow [2022-12-13 12:32:31,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 166 transitions, 1409 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 12:32:31,610 INFO L231 Difference]: Finished difference. Result has 77 places, 78 transitions, 572 flow [2022-12-13 12:32:31,610 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=572, PETRI_PLACES=77, PETRI_TRANSITIONS=78} [2022-12-13 12:32:31,611 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -22 predicate places. [2022-12-13 12:32:31,611 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 78 transitions, 572 flow [2022-12-13 12:32:31,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 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 12:32:31,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:32:31,611 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 12:32:31,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:32:31,612 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:32:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:32:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash 881482279, now seen corresponding path program 2 times [2022-12-13 12:32:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:32:31,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523048451] [2022-12-13 12:32:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:32:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:32:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:32:32,482 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 12:32:32,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:32:32,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523048451] [2022-12-13 12:32:32,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523048451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:32:32,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:32:32,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:32:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583007985] [2022-12-13 12:32:32,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:32:32,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:32:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:32:32,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:32:32,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:32:32,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 372 [2022-12-13 12:32:32,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 78 transitions, 572 flow. Second operand has 9 states, 9 states have (on average 129.88888888888889) internal successors, (1169), 9 states have internal predecessors, (1169), 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 12:32:32,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:32:32,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 372 [2022-12-13 12:32:32,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:32:58,219 INFO L130 PetriNetUnfolder]: 151785/215797 cut-off events. [2022-12-13 12:32:58,219 INFO L131 PetriNetUnfolder]: For 238806/239052 co-relation queries the response was YES. [2022-12-13 12:32:58,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771006 conditions, 215797 events. 151785/215797 cut-off events. For 238806/239052 co-relation queries the response was YES. Maximal size of possible extension queue 12426. Compared 1739594 event pairs, 88385 based on Foata normal form. 31/194104 useless extension candidates. Maximal degree in co-relation 770990. Up to 203834 conditions per place. [2022-12-13 12:32:59,588 INFO L137 encePairwiseOnDemand]: 359/372 looper letters, 144 selfloop transitions, 61 changer transitions 0/207 dead transitions. [2022-12-13 12:32:59,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 207 transitions, 1826 flow [2022-12-13 12:32:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:32:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:32:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1539 transitions. [2022-12-13 12:32:59,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37609970674486803 [2022-12-13 12:32:59,593 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1539 transitions. [2022-12-13 12:32:59,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1539 transitions. [2022-12-13 12:32:59,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:32:59,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1539 transitions. [2022-12-13 12:32:59,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 139.9090909090909) internal successors, (1539), 11 states have internal predecessors, (1539), 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 12:32:59,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 372.0) internal successors, (4464), 12 states have internal predecessors, (4464), 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 12:32:59,600 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 372.0) internal successors, (4464), 12 states have internal predecessors, (4464), 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 12:32:59,600 INFO L175 Difference]: Start difference. First operand has 77 places, 78 transitions, 572 flow. Second operand 11 states and 1539 transitions. [2022-12-13 12:32:59,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 207 transitions, 1826 flow [2022-12-13 12:33:00,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 207 transitions, 1806 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 12:33:00,691 INFO L231 Difference]: Finished difference. Result has 94 places, 138 transitions, 1309 flow [2022-12-13 12:33:00,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1309, PETRI_PLACES=94, PETRI_TRANSITIONS=138} [2022-12-13 12:33:00,692 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2022-12-13 12:33:00,692 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 138 transitions, 1309 flow [2022-12-13 12:33:00,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 129.88888888888889) internal successors, (1169), 9 states have internal predecessors, (1169), 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 12:33:00,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:00,692 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 12:33:00,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:33:00,693 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:33:00,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:00,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1422105029, now seen corresponding path program 1 times [2022-12-13 12:33:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:00,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185185457] [2022-12-13 12:33:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:00,814 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 12:33:00,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:00,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185185457] [2022-12-13 12:33:00,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185185457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:00,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:00,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:33:00,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608133996] [2022-12-13 12:33:00,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:00,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:33:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:00,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:33:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:33:00,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 372 [2022-12-13 12:33:00,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 138 transitions, 1309 flow. Second operand has 7 states, 7 states have (on average 139.42857142857142) internal successors, (976), 7 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:00,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:00,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 372 [2022-12-13 12:33:00,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:24,129 INFO L130 PetriNetUnfolder]: 125980/179861 cut-off events. [2022-12-13 12:33:24,129 INFO L131 PetriNetUnfolder]: For 275540/275808 co-relation queries the response was YES. [2022-12-13 12:33:24,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704425 conditions, 179861 events. 125980/179861 cut-off events. For 275540/275808 co-relation queries the response was YES. Maximal size of possible extension queue 10488. Compared 1419208 event pairs, 39059 based on Foata normal form. 1880/162130 useless extension candidates. Maximal degree in co-relation 704400. Up to 72586 conditions per place. [2022-12-13 12:33:25,465 INFO L137 encePairwiseOnDemand]: 352/372 looper letters, 174 selfloop transitions, 40 changer transitions 0/216 dead transitions. [2022-12-13 12:33:25,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 216 transitions, 2387 flow [2022-12-13 12:33:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:33:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:33:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 911 transitions. [2022-12-13 12:33:25,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4081541218637993 [2022-12-13 12:33:25,469 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 911 transitions. [2022-12-13 12:33:25,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 911 transitions. [2022-12-13 12:33:25,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:25,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 911 transitions. [2022-12-13 12:33:25,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 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 12:33:25,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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 12:33:25,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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 12:33:25,473 INFO L175 Difference]: Start difference. First operand has 94 places, 138 transitions, 1309 flow. Second operand 6 states and 911 transitions. [2022-12-13 12:33:25,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 216 transitions, 2387 flow [2022-12-13 12:33:41,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 216 transitions, 2355 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-12-13 12:33:41,850 INFO L231 Difference]: Finished difference. Result has 101 places, 157 transitions, 1715 flow [2022-12-13 12:33:41,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1715, PETRI_PLACES=101, PETRI_TRANSITIONS=157} [2022-12-13 12:33:41,850 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2022-12-13 12:33:41,850 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 157 transitions, 1715 flow [2022-12-13 12:33:41,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.42857142857142) internal successors, (976), 7 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:33:41,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:33:41,851 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 12:33:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:33:41,851 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:33:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:33:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -429278093, now seen corresponding path program 1 times [2022-12-13 12:33:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:33:41,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526450697] [2022-12-13 12:33:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:33:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:33:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:33:41,952 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 12:33:41,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:33:41,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526450697] [2022-12-13 12:33:41,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526450697] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:33:41,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:33:41,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:33:41,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799297076] [2022-12-13 12:33:41,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:33:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:33:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:33:41,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:33:41,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:33:41,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 372 [2022-12-13 12:33:41,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 157 transitions, 1715 flow. Second operand has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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 12:33:41,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:33:41,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 372 [2022-12-13 12:33:41,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:33:54,725 INFO L130 PetriNetUnfolder]: 63659/95243 cut-off events. [2022-12-13 12:33:54,725 INFO L131 PetriNetUnfolder]: For 200372/200504 co-relation queries the response was YES. [2022-12-13 12:33:55,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406935 conditions, 95243 events. 63659/95243 cut-off events. For 200372/200504 co-relation queries the response was YES. Maximal size of possible extension queue 6057. Compared 765881 event pairs, 18318 based on Foata normal form. 1288/86603 useless extension candidates. Maximal degree in co-relation 406908. Up to 89112 conditions per place. [2022-12-13 12:33:55,437 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 154 selfloop transitions, 5 changer transitions 54/215 dead transitions. [2022-12-13 12:33:55,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 215 transitions, 2281 flow [2022-12-13 12:33:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:33:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:33:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 798 transitions. [2022-12-13 12:33:55,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4290322580645161 [2022-12-13 12:33:55,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 798 transitions. [2022-12-13 12:33:55,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 798 transitions. [2022-12-13 12:33:55,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:33:55,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 798 transitions. [2022-12-13 12:33:55,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.6) internal successors, (798), 5 states have internal predecessors, (798), 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 12:33:55,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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 12:33:55,443 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 372.0) internal successors, (2232), 6 states have internal predecessors, (2232), 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 12:33:55,443 INFO L175 Difference]: Start difference. First operand has 101 places, 157 transitions, 1715 flow. Second operand 5 states and 798 transitions. [2022-12-13 12:33:55,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 215 transitions, 2281 flow [2022-12-13 12:34:09,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 215 transitions, 2212 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-12-13 12:34:09,034 INFO L231 Difference]: Finished difference. Result has 101 places, 129 transitions, 1201 flow [2022-12-13 12:34:09,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1201, PETRI_PLACES=101, PETRI_TRANSITIONS=129} [2022-12-13 12:34:09,034 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 2 predicate places. [2022-12-13 12:34:09,034 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 129 transitions, 1201 flow [2022-12-13 12:34:09,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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 12:34:09,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:09,034 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:09,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:34:09,035 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:34:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash 570359221, now seen corresponding path program 1 times [2022-12-13 12:34:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:09,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080876627] [2022-12-13 12:34:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:10,111 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 12:34:10,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:10,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080876627] [2022-12-13 12:34:10,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080876627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:10,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:10,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:34:10,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515416142] [2022-12-13 12:34:10,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:34:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:34:10,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:34:10,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 372 [2022-12-13 12:34:10,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 129 transitions, 1201 flow. Second operand has 10 states, 10 states have (on average 128.9) internal successors, (1289), 10 states have internal predecessors, (1289), 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 12:34:10,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:10,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 372 [2022-12-13 12:34:10,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:23,402 INFO L130 PetriNetUnfolder]: 60873/91128 cut-off events. [2022-12-13 12:34:23,402 INFO L131 PetriNetUnfolder]: For 207268/207399 co-relation queries the response was YES. [2022-12-13 12:34:23,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432695 conditions, 91128 events. 60873/91128 cut-off events. For 207268/207399 co-relation queries the response was YES. Maximal size of possible extension queue 6122. Compared 732855 event pairs, 27566 based on Foata normal form. 15/81222 useless extension candidates. Maximal degree in co-relation 432667. Up to 89252 conditions per place. [2022-12-13 12:34:24,078 INFO L137 encePairwiseOnDemand]: 360/372 looper letters, 167 selfloop transitions, 69 changer transitions 0/238 dead transitions. [2022-12-13 12:34:24,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 238 transitions, 2534 flow [2022-12-13 12:34:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:34:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:34:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1518 transitions. [2022-12-13 12:34:24,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2022-12-13 12:34:24,082 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1518 transitions. [2022-12-13 12:34:24,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1518 transitions. [2022-12-13 12:34:24,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:24,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1518 transitions. [2022-12-13 12:34:24,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.0) internal successors, (1518), 11 states have internal predecessors, (1518), 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 12:34:24,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 372.0) internal successors, (4464), 12 states have internal predecessors, (4464), 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 12:34:24,088 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 372.0) internal successors, (4464), 12 states have internal predecessors, (4464), 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 12:34:24,088 INFO L175 Difference]: Start difference. First operand has 101 places, 129 transitions, 1201 flow. Second operand 11 states and 1518 transitions. [2022-12-13 12:34:24,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 238 transitions, 2534 flow [2022-12-13 12:34:25,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 238 transitions, 2517 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 12:34:25,406 INFO L231 Difference]: Finished difference. Result has 114 places, 183 transitions, 2008 flow [2022-12-13 12:34:25,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2008, PETRI_PLACES=114, PETRI_TRANSITIONS=183} [2022-12-13 12:34:25,406 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 15 predicate places. [2022-12-13 12:34:25,406 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 183 transitions, 2008 flow [2022-12-13 12:34:25,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.9) internal successors, (1289), 10 states have internal predecessors, (1289), 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 12:34:25,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:25,406 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:25,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:34:25,407 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:34:25,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1333077364, now seen corresponding path program 1 times [2022-12-13 12:34:25,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:25,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485639483] [2022-12-13 12:34:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:26,573 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 12:34:26,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:26,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485639483] [2022-12-13 12:34:26,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485639483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:26,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:26,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:34:26,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202467052] [2022-12-13 12:34:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:34:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:34:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:34:26,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 372 [2022-12-13 12:34:26,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 183 transitions, 2008 flow. Second operand has 11 states, 11 states have (on average 128.72727272727272) internal successors, (1416), 11 states have internal predecessors, (1416), 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 12:34:26,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:26,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 372 [2022-12-13 12:34:26,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:40,782 INFO L130 PetriNetUnfolder]: 60231/90736 cut-off events. [2022-12-13 12:34:40,782 INFO L131 PetriNetUnfolder]: For 258250/258418 co-relation queries the response was YES. [2022-12-13 12:34:41,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456989 conditions, 90736 events. 60231/90736 cut-off events. For 258250/258418 co-relation queries the response was YES. Maximal size of possible extension queue 6193. Compared 739346 event pairs, 24838 based on Foata normal form. 926/82365 useless extension candidates. Maximal degree in co-relation 456955. Up to 73774 conditions per place. [2022-12-13 12:34:41,730 INFO L137 encePairwiseOnDemand]: 351/372 looper letters, 209 selfloop transitions, 147 changer transitions 0/358 dead transitions. [2022-12-13 12:34:41,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 358 transitions, 4229 flow [2022-12-13 12:34:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:34:41,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 12:34:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2226 transitions. [2022-12-13 12:34:41,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37399193548387094 [2022-12-13 12:34:41,735 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2226 transitions. [2022-12-13 12:34:41,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2226 transitions. [2022-12-13 12:34:41,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:41,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2226 transitions. [2022-12-13 12:34:41,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.125) internal successors, (2226), 16 states have internal predecessors, (2226), 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 12:34:41,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 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 12:34:41,743 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 372.0) internal successors, (6324), 17 states have internal predecessors, (6324), 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 12:34:41,743 INFO L175 Difference]: Start difference. First operand has 114 places, 183 transitions, 2008 flow. Second operand 16 states and 2226 transitions. [2022-12-13 12:34:41,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 358 transitions, 4229 flow [2022-12-13 12:34:45,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 358 transitions, 4148 flow, removed 39 selfloop flow, removed 1 redundant places. [2022-12-13 12:34:45,018 INFO L231 Difference]: Finished difference. Result has 138 places, 251 transitions, 3406 flow [2022-12-13 12:34:45,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3406, PETRI_PLACES=138, PETRI_TRANSITIONS=251} [2022-12-13 12:34:45,019 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 39 predicate places. [2022-12-13 12:34:45,019 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 251 transitions, 3406 flow [2022-12-13 12:34:45,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.72727272727272) internal successors, (1416), 11 states have internal predecessors, (1416), 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 12:34:45,019 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:45,019 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 12:34:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:34:45,020 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:34:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:45,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1546882318, now seen corresponding path program 1 times [2022-12-13 12:34:45,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:45,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974456365] [2022-12-13 12:34:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:45,140 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 12:34:45,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:45,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974456365] [2022-12-13 12:34:45,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974456365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:45,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:45,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 12:34:45,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515651704] [2022-12-13 12:34:45,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:45,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:34:45,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:45,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:34:45,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:34:45,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 372 [2022-12-13 12:34:45,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 251 transitions, 3406 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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 12:34:45,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:45,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 372 [2022-12-13 12:34:45,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:50,451 INFO L130 PetriNetUnfolder]: 17531/28629 cut-off events. [2022-12-13 12:34:50,451 INFO L131 PetriNetUnfolder]: For 108111/108207 co-relation queries the response was YES. [2022-12-13 12:34:50,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150450 conditions, 28629 events. 17531/28629 cut-off events. For 108111/108207 co-relation queries the response was YES. Maximal size of possible extension queue 1841. Compared 222951 event pairs, 3364 based on Foata normal form. 939/27525 useless extension candidates. Maximal degree in co-relation 150405. Up to 21909 conditions per place. [2022-12-13 12:34:50,678 INFO L137 encePairwiseOnDemand]: 365/372 looper letters, 242 selfloop transitions, 9 changer transitions 53/306 dead transitions. [2022-12-13 12:34:50,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 306 transitions, 4042 flow [2022-12-13 12:34:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:34:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:34:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 958 transitions. [2022-12-13 12:34:50,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4292114695340502 [2022-12-13 12:34:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 958 transitions. [2022-12-13 12:34:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 958 transitions. [2022-12-13 12:34:50,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:50,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 958 transitions. [2022-12-13 12:34:50,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 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 12:34:50,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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 12:34:50,684 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 372.0) internal successors, (2604), 7 states have internal predecessors, (2604), 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 12:34:50,684 INFO L175 Difference]: Start difference. First operand has 138 places, 251 transitions, 3406 flow. Second operand 6 states and 958 transitions. [2022-12-13 12:34:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 306 transitions, 4042 flow [2022-12-13 12:34:52,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 306 transitions, 3792 flow, removed 101 selfloop flow, removed 8 redundant places. [2022-12-13 12:34:52,220 INFO L231 Difference]: Finished difference. Result has 131 places, 177 transitions, 2010 flow [2022-12-13 12:34:52,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2010, PETRI_PLACES=131, PETRI_TRANSITIONS=177} [2022-12-13 12:34:52,221 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 32 predicate places. [2022-12-13 12:34:52,221 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 177 transitions, 2010 flow [2022-12-13 12:34:52,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 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 12:34:52,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:52,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:52,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:34:52,221 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:34:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:52,222 INFO L85 PathProgramCache]: Analyzing trace with hash 657776852, now seen corresponding path program 1 times [2022-12-13 12:34:52,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:52,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308842972] [2022-12-13 12:34:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:52,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:53,046 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 12:34:53,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:53,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308842972] [2022-12-13 12:34:53,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308842972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:53,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:53,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:34:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303113156] [2022-12-13 12:34:53,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:53,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:34:53,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:53,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:34:53,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:34:53,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 372 [2022-12-13 12:34:53,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 177 transitions, 2010 flow. Second operand has 9 states, 9 states have (on average 135.44444444444446) internal successors, (1219), 9 states have internal predecessors, (1219), 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 12:34:53,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:53,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 372 [2022-12-13 12:34:53,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:02,786 INFO L130 PetriNetUnfolder]: 34099/56313 cut-off events. [2022-12-13 12:35:02,786 INFO L131 PetriNetUnfolder]: For 252917/253113 co-relation queries the response was YES. [2022-12-13 12:35:03,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303108 conditions, 56313 events. 34099/56313 cut-off events. For 252917/253113 co-relation queries the response was YES. Maximal size of possible extension queue 3435. Compared 487159 event pairs, 8624 based on Foata normal form. 88/53135 useless extension candidates. Maximal degree in co-relation 303064. Up to 25000 conditions per place. [2022-12-13 12:35:03,348 INFO L137 encePairwiseOnDemand]: 354/372 looper letters, 326 selfloop transitions, 82 changer transitions 0/410 dead transitions. [2022-12-13 12:35:03,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 410 transitions, 4971 flow [2022-12-13 12:35:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:35:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:35:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1505 transitions. [2022-12-13 12:35:03,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40456989247311825 [2022-12-13 12:35:03,351 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1505 transitions. [2022-12-13 12:35:03,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1505 transitions. [2022-12-13 12:35:03,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:03,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1505 transitions. [2022-12-13 12:35:03,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 150.5) internal successors, (1505), 10 states have internal predecessors, (1505), 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 12:35:03,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 372.0) internal successors, (4092), 11 states have internal predecessors, (4092), 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 12:35:03,356 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 372.0) internal successors, (4092), 11 states have internal predecessors, (4092), 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 12:35:03,356 INFO L175 Difference]: Start difference. First operand has 131 places, 177 transitions, 2010 flow. Second operand 10 states and 1505 transitions. [2022-12-13 12:35:03,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 410 transitions, 4971 flow [2022-12-13 12:35:09,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 410 transitions, 4757 flow, removed 84 selfloop flow, removed 4 redundant places. [2022-12-13 12:35:09,173 INFO L231 Difference]: Finished difference. Result has 138 places, 234 transitions, 2869 flow [2022-12-13 12:35:09,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2869, PETRI_PLACES=138, PETRI_TRANSITIONS=234} [2022-12-13 12:35:09,174 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 39 predicate places. [2022-12-13 12:35:09,174 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 234 transitions, 2869 flow [2022-12-13 12:35:09,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.44444444444446) internal successors, (1219), 9 states have internal predecessors, (1219), 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 12:35:09,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:09,174 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:09,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:35:09,174 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:35:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash 590230016, now seen corresponding path program 2 times [2022-12-13 12:35:09,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:35:09,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754201208] [2022-12-13 12:35:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:09,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:35:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:10,089 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 12:35:10,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:35:10,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754201208] [2022-12-13 12:35:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754201208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:35:10,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:35:10,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:35:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029161205] [2022-12-13 12:35:10,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:35:10,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:35:10,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:35:10,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:35:10,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:35:10,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 372 [2022-12-13 12:35:10,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 234 transitions, 2869 flow. Second operand has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 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 12:35:10,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:10,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 372 [2022-12-13 12:35:10,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:28,267 INFO L130 PetriNetUnfolder]: 60160/98871 cut-off events. [2022-12-13 12:35:28,267 INFO L131 PetriNetUnfolder]: For 460692/460922 co-relation queries the response was YES. [2022-12-13 12:35:28,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523317 conditions, 98871 events. 60160/98871 cut-off events. For 460692/460922 co-relation queries the response was YES. Maximal size of possible extension queue 5561. Compared 906308 event pairs, 13068 based on Foata normal form. 141/93900 useless extension candidates. Maximal degree in co-relation 523270. Up to 47469 conditions per place. [2022-12-13 12:35:29,211 INFO L137 encePairwiseOnDemand]: 354/372 looper letters, 448 selfloop transitions, 176 changer transitions 0/626 dead transitions. [2022-12-13 12:35:29,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 626 transitions, 7459 flow [2022-12-13 12:35:29,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:35:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 12:35:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2490 transitions. [2022-12-13 12:35:29,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3937381404174573 [2022-12-13 12:35:29,215 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2490 transitions. [2022-12-13 12:35:29,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2490 transitions. [2022-12-13 12:35:29,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:29,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2490 transitions. [2022-12-13 12:35:29,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 146.47058823529412) internal successors, (2490), 17 states have internal predecessors, (2490), 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 12:35:29,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 372.0) internal successors, (6696), 18 states have internal predecessors, (6696), 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 12:35:29,223 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 372.0) internal successors, (6696), 18 states have internal predecessors, (6696), 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 12:35:29,223 INFO L175 Difference]: Start difference. First operand has 138 places, 234 transitions, 2869 flow. Second operand 17 states and 2490 transitions. [2022-12-13 12:35:29,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 626 transitions, 7459 flow [2022-12-13 12:35:48,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 626 transitions, 7412 flow, removed 23 selfloop flow, removed 1 redundant places. [2022-12-13 12:35:48,524 INFO L231 Difference]: Finished difference. Result has 162 places, 370 transitions, 5153 flow [2022-12-13 12:35:48,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=2844, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5153, PETRI_PLACES=162, PETRI_TRANSITIONS=370} [2022-12-13 12:35:48,525 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 63 predicate places. [2022-12-13 12:35:48,525 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 370 transitions, 5153 flow [2022-12-13 12:35:48,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 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 12:35:48,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:48,525 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:48,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:35:48,525 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:35:48,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:48,526 INFO L85 PathProgramCache]: Analyzing trace with hash -868778492, now seen corresponding path program 1 times [2022-12-13 12:35:48,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:35:48,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267573937] [2022-12-13 12:35:48,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:48,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:35:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:49,359 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 12:35:49,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:35:49,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267573937] [2022-12-13 12:35:49,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267573937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:35:49,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:35:49,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:35:49,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188828805] [2022-12-13 12:35:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:35:49,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:35:49,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:35:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:35:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:35:49,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 372 [2022-12-13 12:35:49,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 370 transitions, 5153 flow. Second operand has 10 states, 10 states have (on average 135.2) internal successors, (1352), 10 states have internal predecessors, (1352), 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 12:35:49,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:49,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 372 [2022-12-13 12:35:49,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:18,393 INFO L130 PetriNetUnfolder]: 85781/141163 cut-off events. [2022-12-13 12:36:18,393 INFO L131 PetriNetUnfolder]: For 906021/906343 co-relation queries the response was YES. [2022-12-13 12:36:19,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795936 conditions, 141163 events. 85781/141163 cut-off events. For 906021/906343 co-relation queries the response was YES. Maximal size of possible extension queue 7695. Compared 1358395 event pairs, 26066 based on Foata normal form. 1679/135858 useless extension candidates. Maximal degree in co-relation 795880. Up to 78944 conditions per place. [2022-12-13 12:36:19,989 INFO L137 encePairwiseOnDemand]: 353/372 looper letters, 637 selfloop transitions, 162 changer transitions 4/805 dead transitions. [2022-12-13 12:36:19,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 805 transitions, 11740 flow [2022-12-13 12:36:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 12:36:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 12:36:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2070 transitions. [2022-12-13 12:36:19,992 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39746543778801846 [2022-12-13 12:36:19,993 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2070 transitions. [2022-12-13 12:36:19,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2070 transitions. [2022-12-13 12:36:19,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:19,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2070 transitions. [2022-12-13 12:36:19,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 147.85714285714286) internal successors, (2070), 14 states have internal predecessors, (2070), 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 12:36:19,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 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 12:36:19,999 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 372.0) internal successors, (5580), 15 states have internal predecessors, (5580), 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 12:36:19,999 INFO L175 Difference]: Start difference. First operand has 162 places, 370 transitions, 5153 flow. Second operand 14 states and 2070 transitions. [2022-12-13 12:36:19,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 805 transitions, 11740 flow [2022-12-13 12:37:13,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 805 transitions, 11263 flow, removed 235 selfloop flow, removed 2 redundant places. [2022-12-13 12:37:13,113 INFO L231 Difference]: Finished difference. Result has 182 places, 498 transitions, 7237 flow [2022-12-13 12:37:13,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=4918, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7237, PETRI_PLACES=182, PETRI_TRANSITIONS=498} [2022-12-13 12:37:13,114 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 83 predicate places. [2022-12-13 12:37:13,114 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 498 transitions, 7237 flow [2022-12-13 12:37:13,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 135.2) internal successors, (1352), 10 states have internal predecessors, (1352), 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 12:37:13,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:37:13,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:13,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:37:13,114 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:37:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1572547910, now seen corresponding path program 3 times [2022-12-13 12:37:13,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:13,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624233932] [2022-12-13 12:37:13,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:13,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:13,917 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 12:37:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:13,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624233932] [2022-12-13 12:37:13,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624233932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:37:13,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:37:13,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:37:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126855153] [2022-12-13 12:37:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:37:13,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:37:13,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:37:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:37:14,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 372 [2022-12-13 12:37:14,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 498 transitions, 7237 flow. Second operand has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 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 12:37:14,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:37:14,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 372 [2022-12-13 12:37:14,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:37:54,149 INFO L130 PetriNetUnfolder]: 103501/171618 cut-off events. [2022-12-13 12:37:54,149 INFO L131 PetriNetUnfolder]: For 1228474/1228816 co-relation queries the response was YES. [2022-12-13 12:37:55,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009041 conditions, 171618 events. 103501/171618 cut-off events. For 1228474/1228816 co-relation queries the response was YES. Maximal size of possible extension queue 9821. Compared 1712192 event pairs, 19357 based on Foata normal form. 181/163055 useless extension candidates. Maximal degree in co-relation 1008976. Up to 63287 conditions per place. [2022-12-13 12:37:56,248 INFO L137 encePairwiseOnDemand]: 354/372 looper letters, 604 selfloop transitions, 319 changer transitions 0/925 dead transitions. [2022-12-13 12:37:56,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 925 transitions, 12866 flow [2022-12-13 12:37:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 12:37:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 12:37:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2804 transitions. [2022-12-13 12:37:56,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3967176004527448 [2022-12-13 12:37:56,252 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2804 transitions. [2022-12-13 12:37:56,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2804 transitions. [2022-12-13 12:37:56,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:37:56,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2804 transitions. [2022-12-13 12:37:56,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 147.57894736842104) internal successors, (2804), 19 states have internal predecessors, (2804), 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 12:37:56,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 372.0) internal successors, (7440), 20 states have internal predecessors, (7440), 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 12:37:56,260 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 372.0) internal successors, (7440), 20 states have internal predecessors, (7440), 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 12:37:56,260 INFO L175 Difference]: Start difference. First operand has 182 places, 498 transitions, 7237 flow. Second operand 19 states and 2804 transitions. [2022-12-13 12:37:56,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 925 transitions, 12866 flow [2022-12-13 12:39:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 925 transitions, 12774 flow, removed 36 selfloop flow, removed 2 redundant places. [2022-12-13 12:39:37,493 INFO L231 Difference]: Finished difference. Result has 207 places, 545 transitions, 9112 flow [2022-12-13 12:39:37,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=372, PETRI_DIFFERENCE_MINUEND_FLOW=7157, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9112, PETRI_PLACES=207, PETRI_TRANSITIONS=545} [2022-12-13 12:39:37,493 INFO L288 CegarLoopForPetriNet]: 99 programPoint places, 108 predicate places. [2022-12-13 12:39:37,493 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 545 transitions, 9112 flow [2022-12-13 12:39:37,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 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 12:39:37,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:39:37,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:39:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:39:37,494 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2022-12-13 12:39:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1792632428, now seen corresponding path program 4 times [2022-12-13 12:39:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:37,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505745790] [2022-12-13 12:39:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:38,525 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 12:39:38,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:38,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505745790] [2022-12-13 12:39:38,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505745790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:38,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:38,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:39:38,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665041715] [2022-12-13 12:39:38,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:38,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:39:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:39:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:39:38,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 372 [2022-12-13 12:39:38,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 545 transitions, 9112 flow. Second operand has 12 states, 12 states have (on average 128.83333333333334) internal successors, (1546), 12 states have internal predecessors, (1546), 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 12:39:38,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:39:38,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 372 [2022-12-13 12:39:38,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand