./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R --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 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 --- 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-38b53e6 [2022-11-25 15:46:47,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:46:47,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:46:47,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:46:47,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:46:47,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:46:47,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:46:47,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:46:47,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:46:47,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:46:47,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:46:47,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:46:47,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:46:47,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:46:47,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:46:47,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:46:47,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:46:47,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:46:47,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:46:47,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:46:47,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:46:47,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:46:47,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:46:47,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:46:47,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:46:47,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:46:47,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:46:47,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:46:47,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:46:47,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:46:47,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:46:47,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:46:47,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:46:47,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:46:47,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:46:47,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:46:47,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:46:47,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:46:47,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:46:47,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:46:47,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:46:47,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:46:47,644 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:46:47,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:46:47,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:46:47,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:46:47,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:46:47,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:46:47,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:46:47,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:46:47,648 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:46:47,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:46:47,650 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:46:47,650 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:46:47,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:46:47,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:46:47,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:46:47,651 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:46:47,651 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:46:47,651 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:46:47,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:46:47,652 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:46:47,652 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:46:47,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:46:47,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:46:47,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:46:47,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:46:47,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:46:47,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:46:47,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:46:47,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:46:47,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:46:47,655 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:46:47,655 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:46:47,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:46:47,656 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_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 [2022-11-25 15:46:48,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:46:48,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:46:48,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:46:48,052 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:46:48,053 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:46:48,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe002_tso.i [2022-11-25 15:46:51,494 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:46:51,794 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:46:51,795 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/sv-benchmarks/c/pthread-wmm/safe002_tso.i [2022-11-25 15:46:51,811 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/data/651ed5d2a/c28e33eadce7409b8438dc435a452dfe/FLAG08e57fc0d [2022-11-25 15:46:51,828 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/data/651ed5d2a/c28e33eadce7409b8438dc435a452dfe [2022-11-25 15:46:51,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:46:51,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:46:51,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:46:51,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:46:51,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:46:51,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:46:51" (1/1) ... [2022-11-25 15:46:51,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b8195e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:51, skipping insertion in model container [2022-11-25 15:46:51,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:46:51" (1/1) ... [2022-11-25 15:46:51,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:46:51,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:46:52,170 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_e96410f1-13c2-4c5d-9b6f-0d294de9597a/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2022-11-25 15:46:52,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,388 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:46:52,410 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:46:52,431 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_e96410f1-13c2-4c5d-9b6f-0d294de9597a/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2022-11-25 15:46:52,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,508 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:46:52,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:46:52,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:46:52,571 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:46:52,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52 WrapperNode [2022-11-25 15:46:52,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:46:52,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:46:52,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:46:52,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:46:52,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,658 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-25 15:46:52,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:46:52,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:46:52,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:46:52,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:46:52,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:46:52,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:46:52,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:46:52,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:46:52,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (1/1) ... [2022-11-25 15:46:52,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:46:52,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:46:52,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:46:52,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:46:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:46:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:46:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:46:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:46:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:46:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 15:46:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 15:46:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 15:46:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 15:46:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-25 15:46:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-25 15:46:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:46:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:46:52,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:46:52,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:46:52,810 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:46:53,080 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:46:53,082 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:46:53,363 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:46:53,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:46:53,373 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:46:53,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:46:53 BoogieIcfgContainer [2022-11-25 15:46:53,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:46:53,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:46:53,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:46:53,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:46:53,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:46:51" (1/3) ... [2022-11-25 15:46:53,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a89d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:46:53, skipping insertion in model container [2022-11-25 15:46:53,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:46:52" (2/3) ... [2022-11-25 15:46:53,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a89d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:46:53, skipping insertion in model container [2022-11-25 15:46:53,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:46:53" (3/3) ... [2022-11-25 15:46:53,388 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2022-11-25 15:46:53,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:46:53,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 15:46:53,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:46:53,478 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 15:46:53,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 102 transitions, 219 flow [2022-11-25 15:46:53,620 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2022-11-25 15:46:53,621 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:46:53,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 99 events. 2/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-11-25 15:46:53,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 102 transitions, 219 flow [2022-11-25 15:46:53,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 94 transitions, 197 flow [2022-11-25 15:46:53,637 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:46:53,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 94 transitions, 197 flow [2022-11-25 15:46:53,661 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 94 transitions, 197 flow [2022-11-25 15:46:53,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 197 flow [2022-11-25 15:46:53,690 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-11-25 15:46:53,690 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:46:53,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 94 events. 2/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-11-25 15:46:53,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2022-11-25 15:46:58,003 INFO L134 LiptonReduction]: Checked pairs total: 3288 [2022-11-25 15:46:58,003 INFO L136 LiptonReduction]: Total number of compositions: 97 [2022-11-25 15:46:58,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:46:58,032 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;@7c9b2dfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:46:58,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-25 15:46:58,035 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 15:46:58,035 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:46:58,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:46:58,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 15:46:58,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:46:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 361, now seen corresponding path program 1 times [2022-11-25 15:46:58,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:58,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217718760] [2022-11-25 15:46:58,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:58,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:58,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:58,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217718760] [2022-11-25 15:46:58,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217718760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:58,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:58,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 15:46:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616420565] [2022-11-25 15:46:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:58,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:46:58,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:46:58,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:46:58,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 199 [2022-11-25 15:46:58,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:58,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:46:58,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 199 [2022-11-25 15:46:58,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:46:58,474 INFO L130 PetriNetUnfolder]: 218/368 cut-off events. [2022-11-25 15:46:58,475 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-25 15:46:58,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 368 events. 218/368 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1545 event pairs, 218 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 739. Up to 352 conditions per place. [2022-11-25 15:46:58,487 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2022-11-25 15:46:58,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2022-11-25 15:46:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:46:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 15:46:58,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2022-11-25 15:46:58,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.535175879396985 [2022-11-25 15:46:58,513 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2022-11-25 15:46:58,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2022-11-25 15:46:58,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:46:58,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2022-11-25 15:46:58,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:58,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:58,537 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:58,540 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 57 flow. Second operand 2 states and 213 transitions. [2022-11-25 15:46:58,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2022-11-25 15:46:58,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 15:46:58,545 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2022-11-25 15:46:58,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2022-11-25 15:46:58,561 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2022-11-25 15:46:58,562 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2022-11-25 15:46:58,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:58,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:46:58,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:58,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:46:58,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:46:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:58,567 INFO L85 PathProgramCache]: Analyzing trace with hash -286996783, now seen corresponding path program 1 times [2022-11-25 15:46:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:58,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139214356] [2022-11-25 15:46:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:58,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:59,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:59,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139214356] [2022-11-25 15:46:59,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139214356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:59,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:59,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:46:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487650222] [2022-11-25 15:46:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:59,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:46:59,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:46:59,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:46:59,162 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2022-11-25 15:46:59,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:46:59,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2022-11-25 15:46:59,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:46:59,433 INFO L130 PetriNetUnfolder]: 801/1260 cut-off events. [2022-11-25 15:46:59,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:46:59,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2577 conditions, 1260 events. 801/1260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5822 event pairs, 272 based on Foata normal form. 0/1204 useless extension candidates. Maximal degree in co-relation 2574. Up to 723 conditions per place. [2022-11-25 15:46:59,448 INFO L137 encePairwiseOnDemand]: 191/199 looper letters, 26 selfloop transitions, 7 changer transitions 0/33 dead transitions. [2022-11-25 15:46:59,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 142 flow [2022-11-25 15:46:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:46:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:46:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2022-11-25 15:46:59,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49413735343383586 [2022-11-25 15:46:59,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2022-11-25 15:46:59,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2022-11-25 15:46:59,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:46:59,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2022-11-25 15:46:59,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,465 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 295 transitions. [2022-11-25 15:46:59,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 142 flow [2022-11-25 15:46:59,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:46:59,468 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 96 flow [2022-11-25 15:46:59,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2022-11-25 15:46:59,472 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2022-11-25 15:46:59,473 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 96 flow [2022-11-25 15:46:59,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:46:59,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:46:59,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:46:59,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:46:59,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:46:59,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:46:59,479 INFO L85 PathProgramCache]: Analyzing trace with hash -286996781, now seen corresponding path program 1 times [2022-11-25 15:46:59,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:46:59,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464564890] [2022-11-25 15:46:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:46:59,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:46:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:46:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:46:59,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:46:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464564890] [2022-11-25 15:46:59,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464564890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:46:59,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:46:59,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:46:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121487054] [2022-11-25 15:46:59,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:46:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:46:59,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:46:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:46:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:47:00,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 199 [2022-11-25 15:47:00,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:00,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:00,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 199 [2022-11-25 15:47:00,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:00,427 INFO L130 PetriNetUnfolder]: 518/880 cut-off events. [2022-11-25 15:47:00,428 INFO L131 PetriNetUnfolder]: For 425/436 co-relation queries the response was YES. [2022-11-25 15:47:00,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 880 events. 518/880 cut-off events. For 425/436 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4382 event pairs, 118 based on Foata normal form. 27/872 useless extension candidates. Maximal degree in co-relation 2270. Up to 567 conditions per place. [2022-11-25 15:47:00,439 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 24 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2022-11-25 15:47:00,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 188 flow [2022-11-25 15:47:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:47:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:47:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2022-11-25 15:47:00,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4402010050251256 [2022-11-25 15:47:00,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2022-11-25 15:47:00,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2022-11-25 15:47:00,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:00,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2022-11-25 15:47:00,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:00,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:00,458 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:00,458 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 96 flow. Second operand 5 states and 438 transitions. [2022-11-25 15:47:00,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 188 flow [2022-11-25 15:47:00,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:47:00,466 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 101 flow [2022-11-25 15:47:00,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2022-11-25 15:47:00,469 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2022-11-25 15:47:00,469 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 101 flow [2022-11-25 15:47:00,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:00,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:00,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:00,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:47:00,471 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -926060061, now seen corresponding path program 1 times [2022-11-25 15:47:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:00,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387898260] [2022-11-25 15:47:00,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:00,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:00,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:00,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387898260] [2022-11-25 15:47:00,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387898260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:00,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:00,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722117915] [2022-11-25 15:47:00,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:47:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:00,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:47:00,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:47:00,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 199 [2022-11-25 15:47:00,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:00,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:00,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 199 [2022-11-25 15:47:00,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:01,138 INFO L130 PetriNetUnfolder]: 360/632 cut-off events. [2022-11-25 15:47:01,138 INFO L131 PetriNetUnfolder]: For 386/389 co-relation queries the response was YES. [2022-11-25 15:47:01,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 632 events. 360/632 cut-off events. For 386/389 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3068 event pairs, 111 based on Foata normal form. 32/629 useless extension candidates. Maximal degree in co-relation 1611. Up to 471 conditions per place. [2022-11-25 15:47:01,145 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 19 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2022-11-25 15:47:01,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 149 flow [2022-11-25 15:47:01,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:47:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:47:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 426 transitions. [2022-11-25 15:47:01,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42814070351758793 [2022-11-25 15:47:01,148 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 426 transitions. [2022-11-25 15:47:01,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 426 transitions. [2022-11-25 15:47:01,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:01,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 426 transitions. [2022-11-25 15:47:01,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,154 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 101 flow. Second operand 5 states and 426 transitions. [2022-11-25 15:47:01,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 149 flow [2022-11-25 15:47:01,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 28 transitions, 139 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 15:47:01,157 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 85 flow [2022-11-25 15:47:01,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2022-11-25 15:47:01,158 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2022-11-25 15:47:01,158 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 85 flow [2022-11-25 15:47:01,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:01,159 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:01,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:47:01,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash -926060063, now seen corresponding path program 1 times [2022-11-25 15:47:01,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:01,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769237326] [2022-11-25 15:47:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:01,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:01,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769237326] [2022-11-25 15:47:01,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769237326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:01,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:01,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:47:01,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886726525] [2022-11-25 15:47:01,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:47:01,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:01,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:47:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:47:01,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2022-11-25 15:47:01,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:01,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2022-11-25 15:47:01,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:01,478 INFO L130 PetriNetUnfolder]: 488/791 cut-off events. [2022-11-25 15:47:01,478 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2022-11-25 15:47:01,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 791 events. 488/791 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3221 event pairs, 89 based on Foata normal form. 6/797 useless extension candidates. Maximal degree in co-relation 2086. Up to 422 conditions per place. [2022-11-25 15:47:01,485 INFO L137 encePairwiseOnDemand]: 192/199 looper letters, 31 selfloop transitions, 10 changer transitions 0/41 dead transitions. [2022-11-25 15:47:01,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 233 flow [2022-11-25 15:47:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:47:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:47:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2022-11-25 15:47:01,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4849246231155779 [2022-11-25 15:47:01,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2022-11-25 15:47:01,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2022-11-25 15:47:01,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:01,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2022-11-25 15:47:01,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,493 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 85 flow. Second operand 4 states and 386 transitions. [2022-11-25 15:47:01,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 233 flow [2022-11-25 15:47:01,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 41 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 15:47:01,495 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 155 flow [2022-11-25 15:47:01,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2022-11-25 15:47:01,497 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2022-11-25 15:47:01,497 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 155 flow [2022-11-25 15:47:01,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:01,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:01,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:47:01,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash -926061520, now seen corresponding path program 1 times [2022-11-25 15:47:01,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:01,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443689528] [2022-11-25 15:47:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:01,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:01,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443689528] [2022-11-25 15:47:01,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443689528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:01,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:01,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:47:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044652447] [2022-11-25 15:47:01,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:01,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:47:01,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:47:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:47:01,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 199 [2022-11-25 15:47:01,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:01,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 199 [2022-11-25 15:47:01,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:01,786 INFO L130 PetriNetUnfolder]: 334/606 cut-off events. [2022-11-25 15:47:01,786 INFO L131 PetriNetUnfolder]: For 582/585 co-relation queries the response was YES. [2022-11-25 15:47:01,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1785 conditions, 606 events. 334/606 cut-off events. For 582/585 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2939 event pairs, 117 based on Foata normal form. 7/565 useless extension candidates. Maximal degree in co-relation 1777. Up to 410 conditions per place. [2022-11-25 15:47:01,793 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 23 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2022-11-25 15:47:01,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 236 flow [2022-11-25 15:47:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:47:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:47:01,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2022-11-25 15:47:01,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5125628140703518 [2022-11-25 15:47:01,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2022-11-25 15:47:01,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2022-11-25 15:47:01,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:01,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2022-11-25 15:47:01,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,804 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 155 flow. Second operand 3 states and 306 transitions. [2022-11-25 15:47:01,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 236 flow [2022-11-25 15:47:01,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:47:01,812 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 169 flow [2022-11-25 15:47:01,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-11-25 15:47:01,815 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-11-25 15:47:01,816 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 169 flow [2022-11-25 15:47:01,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:01,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:01,817 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:01,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:47:01,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:01,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:01,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1356906313, now seen corresponding path program 1 times [2022-11-25 15:47:01,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:01,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022843816] [2022-11-25 15:47:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:01,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:02,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022843816] [2022-11-25 15:47:02,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022843816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:02,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:02,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:02,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164654980] [2022-11-25 15:47:02,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:02,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:47:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:02,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:47:02,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:47:02,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2022-11-25 15:47:02,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:02,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2022-11-25 15:47:02,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:02,242 INFO L130 PetriNetUnfolder]: 614/1013 cut-off events. [2022-11-25 15:47:02,243 INFO L131 PetriNetUnfolder]: For 1247/1247 co-relation queries the response was YES. [2022-11-25 15:47:02,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3204 conditions, 1013 events. 614/1013 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4506 event pairs, 163 based on Foata normal form. 28/1041 useless extension candidates. Maximal degree in co-relation 3194. Up to 434 conditions per place. [2022-11-25 15:47:02,249 INFO L137 encePairwiseOnDemand]: 192/199 looper letters, 31 selfloop transitions, 9 changer transitions 12/52 dead transitions. [2022-11-25 15:47:02,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 365 flow [2022-11-25 15:47:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:47:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:47:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 480 transitions. [2022-11-25 15:47:02,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4824120603015075 [2022-11-25 15:47:02,253 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 480 transitions. [2022-11-25 15:47:02,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 480 transitions. [2022-11-25 15:47:02,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:02,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 480 transitions. [2022-11-25 15:47:02,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,258 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,258 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 169 flow. Second operand 5 states and 480 transitions. [2022-11-25 15:47:02,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 365 flow [2022-11-25 15:47:02,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:47:02,266 INFO L231 Difference]: Finished difference. Result has 43 places, 25 transitions, 180 flow [2022-11-25 15:47:02,267 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=25} [2022-11-25 15:47:02,268 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2022-11-25 15:47:02,269 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 25 transitions, 180 flow [2022-11-25 15:47:02,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:02,270 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:02,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:47:02,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1356862603, now seen corresponding path program 2 times [2022-11-25 15:47:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:02,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544653812] [2022-11-25 15:47:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:02,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:02,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:02,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544653812] [2022-11-25 15:47:02,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544653812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:02,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:02,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:02,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115562435] [2022-11-25 15:47:02,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:02,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:47:02,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:47:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:47:02,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2022-11-25 15:47:02,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 25 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:02,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2022-11-25 15:47:02,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:02,657 INFO L130 PetriNetUnfolder]: 350/587 cut-off events. [2022-11-25 15:47:02,657 INFO L131 PetriNetUnfolder]: For 1441/1441 co-relation queries the response was YES. [2022-11-25 15:47:02,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2017 conditions, 587 events. 350/587 cut-off events. For 1441/1441 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2382 event pairs, 101 based on Foata normal form. 30/617 useless extension candidates. Maximal degree in co-relation 2005. Up to 350 conditions per place. [2022-11-25 15:47:02,661 INFO L137 encePairwiseOnDemand]: 192/199 looper letters, 25 selfloop transitions, 8 changer transitions 10/43 dead transitions. [2022-11-25 15:47:02,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 351 flow [2022-11-25 15:47:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:47:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:47:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2022-11-25 15:47:02,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47537688442211057 [2022-11-25 15:47:02,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2022-11-25 15:47:02,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2022-11-25 15:47:02,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:02,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2022-11-25 15:47:02,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,669 INFO L175 Difference]: Start difference. First operand has 43 places, 25 transitions, 180 flow. Second operand 5 states and 473 transitions. [2022-11-25 15:47:02,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 351 flow [2022-11-25 15:47:02,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 291 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-25 15:47:02,678 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 150 flow [2022-11-25 15:47:02,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2022-11-25 15:47:02,681 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2022-11-25 15:47:02,681 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 150 flow [2022-11-25 15:47:02,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:02,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:02,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:47:02,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1475694063, now seen corresponding path program 1 times [2022-11-25 15:47:02,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:02,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844259234] [2022-11-25 15:47:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:02,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:02,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:02,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844259234] [2022-11-25 15:47:02,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844259234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:02,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:02,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:02,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361820518] [2022-11-25 15:47:02,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:02,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:47:02,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:02,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:47:02,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:47:02,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2022-11-25 15:47:02,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:02,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2022-11-25 15:47:02,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:02,971 INFO L130 PetriNetUnfolder]: 163/278 cut-off events. [2022-11-25 15:47:02,971 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-11-25 15:47:02,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 278 events. 163/278 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 854 event pairs, 39 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 965. Up to 133 conditions per place. [2022-11-25 15:47:02,974 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 25 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2022-11-25 15:47:02,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 30 transitions, 230 flow [2022-11-25 15:47:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:47:02,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:47:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2022-11-25 15:47:02,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46984924623115576 [2022-11-25 15:47:02,977 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2022-11-25 15:47:02,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2022-11-25 15:47:02,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:02,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2022-11-25 15:47:02,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,981 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,981 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 150 flow. Second operand 4 states and 374 transitions. [2022-11-25 15:47:02,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 30 transitions, 230 flow [2022-11-25 15:47:02,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 212 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 15:47:02,984 INFO L231 Difference]: Finished difference. Result has 42 places, 23 transitions, 148 flow [2022-11-25 15:47:02,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=42, PETRI_TRANSITIONS=23} [2022-11-25 15:47:02,987 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2022-11-25 15:47:02,987 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 23 transitions, 148 flow [2022-11-25 15:47:02,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:02,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:02,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:47:02,992 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1497665829, now seen corresponding path program 1 times [2022-11-25 15:47:02,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:02,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719768234] [2022-11-25 15:47:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:02,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:03,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:03,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719768234] [2022-11-25 15:47:03,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719768234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:03,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:03,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:47:03,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928011777] [2022-11-25 15:47:03,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:03,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:47:03,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:47:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:47:03,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 199 [2022-11-25 15:47:03,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 23 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:03,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 199 [2022-11-25 15:47:03,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:03,325 INFO L130 PetriNetUnfolder]: 191/330 cut-off events. [2022-11-25 15:47:03,326 INFO L131 PetriNetUnfolder]: For 501/501 co-relation queries the response was YES. [2022-11-25 15:47:03,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119 conditions, 330 events. 191/330 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1122 event pairs, 35 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 1107. Up to 110 conditions per place. [2022-11-25 15:47:03,328 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 19 selfloop transitions, 3 changer transitions 17/39 dead transitions. [2022-11-25 15:47:03,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 270 flow [2022-11-25 15:47:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:47:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:47:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 559 transitions. [2022-11-25 15:47:03,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46817420435510887 [2022-11-25 15:47:03,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 559 transitions. [2022-11-25 15:47:03,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 559 transitions. [2022-11-25 15:47:03,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:03,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 559 transitions. [2022-11-25 15:47:03,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,337 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,337 INFO L175 Difference]: Start difference. First operand has 42 places, 23 transitions, 148 flow. Second operand 6 states and 559 transitions. [2022-11-25 15:47:03,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 270 flow [2022-11-25 15:47:03,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 255 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 15:47:03,341 INFO L231 Difference]: Finished difference. Result has 44 places, 17 transitions, 85 flow [2022-11-25 15:47:03,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=44, PETRI_TRANSITIONS=17} [2022-11-25 15:47:03,342 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2022-11-25 15:47:03,342 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 17 transitions, 85 flow [2022-11-25 15:47:03,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:03,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:03,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:47:03,344 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1498170819, now seen corresponding path program 2 times [2022-11-25 15:47:03,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:03,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400080737] [2022-11-25 15:47:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:03,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:03,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:03,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400080737] [2022-11-25 15:47:03,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400080737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:03,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:03,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:47:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744947335] [2022-11-25 15:47:03,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:47:03,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:47:03,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:47:03,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 199 [2022-11-25 15:47:03,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 17 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:03,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 199 [2022-11-25 15:47:03,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:03,582 INFO L130 PetriNetUnfolder]: 56/125 cut-off events. [2022-11-25 15:47:03,583 INFO L131 PetriNetUnfolder]: For 348/349 co-relation queries the response was YES. [2022-11-25 15:47:03,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 125 events. 56/125 cut-off events. For 348/349 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 385 event pairs, 23 based on Foata normal form. 10/130 useless extension candidates. Maximal degree in co-relation 372. Up to 73 conditions per place. [2022-11-25 15:47:03,584 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 17 selfloop transitions, 4 changer transitions 12/36 dead transitions. [2022-11-25 15:47:03,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 223 flow [2022-11-25 15:47:03,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:47:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:47:03,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2022-11-25 15:47:03,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47738693467336685 [2022-11-25 15:47:03,587 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2022-11-25 15:47:03,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2022-11-25 15:47:03,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:03,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2022-11-25 15:47:03,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,592 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,592 INFO L175 Difference]: Start difference. First operand has 44 places, 17 transitions, 85 flow. Second operand 5 states and 475 transitions. [2022-11-25 15:47:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 223 flow [2022-11-25 15:47:03,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 174 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-11-25 15:47:03,594 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 91 flow [2022-11-25 15:47:03,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2022-11-25 15:47:03,595 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2022-11-25 15:47:03,595 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 91 flow [2022-11-25 15:47:03,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:03,596 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:03,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:47:03,597 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash -607946704, now seen corresponding path program 1 times [2022-11-25 15:47:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:03,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982339443] [2022-11-25 15:47:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:03,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:03,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982339443] [2022-11-25 15:47:03,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982339443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:03,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:03,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:03,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166481319] [2022-11-25 15:47:03,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:03,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:47:03,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:47:03,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:47:03,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 199 [2022-11-25 15:47:03,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,744 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:03,744 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 199 [2022-11-25 15:47:03,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:03,835 INFO L130 PetriNetUnfolder]: 32/83 cut-off events. [2022-11-25 15:47:03,835 INFO L131 PetriNetUnfolder]: For 160/178 co-relation queries the response was YES. [2022-11-25 15:47:03,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 83 events. 32/83 cut-off events. For 160/178 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 219 event pairs, 5 based on Foata normal form. 14/95 useless extension candidates. Maximal degree in co-relation 300. Up to 48 conditions per place. [2022-11-25 15:47:03,836 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 18 selfloop transitions, 7 changer transitions 10/38 dead transitions. [2022-11-25 15:47:03,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 252 flow [2022-11-25 15:47:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:47:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:47:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 565 transitions. [2022-11-25 15:47:03,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4731993299832496 [2022-11-25 15:47:03,839 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 565 transitions. [2022-11-25 15:47:03,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 565 transitions. [2022-11-25 15:47:03,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:03,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 565 transitions. [2022-11-25 15:47:03,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.16666666666667) internal successors, (565), 6 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,845 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 91 flow. Second operand 6 states and 565 transitions. [2022-11-25 15:47:03,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 252 flow [2022-11-25 15:47:03,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 246 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 15:47:03,847 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 141 flow [2022-11-25 15:47:03,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2022-11-25 15:47:03,848 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2022-11-25 15:47:03,848 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 141 flow [2022-11-25 15:47:03,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:03,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:03,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:03,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:47:03,849 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1741704992, now seen corresponding path program 1 times [2022-11-25 15:47:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:03,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610912115] [2022-11-25 15:47:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:03,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:03,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:03,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610912115] [2022-11-25 15:47:03,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610912115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:03,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:03,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:47:03,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920078994] [2022-11-25 15:47:03,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:03,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:47:03,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:03,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:47:03,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:47:04,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 199 [2022-11-25 15:47:04,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:04,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 199 [2022-11-25 15:47:04,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:04,103 INFO L130 PetriNetUnfolder]: 17/52 cut-off events. [2022-11-25 15:47:04,103 INFO L131 PetriNetUnfolder]: For 151/168 co-relation queries the response was YES. [2022-11-25 15:47:04,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 52 events. 17/52 cut-off events. For 151/168 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 2 based on Foata normal form. 12/62 useless extension candidates. Maximal degree in co-relation 217. Up to 28 conditions per place. [2022-11-25 15:47:04,104 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 15 selfloop transitions, 10 changer transitions 5/33 dead transitions. [2022-11-25 15:47:04,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 262 flow [2022-11-25 15:47:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:47:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 15:47:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2022-11-25 15:47:04,108 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46518305814788224 [2022-11-25 15:47:04,108 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2022-11-25 15:47:04,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2022-11-25 15:47:04,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:04,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2022-11-25 15:47:04,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,114 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 141 flow. Second operand 7 states and 648 transitions. [2022-11-25 15:47:04,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 262 flow [2022-11-25 15:47:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 224 flow, removed 15 selfloop flow, removed 4 redundant places. [2022-11-25 15:47:04,117 INFO L231 Difference]: Finished difference. Result has 43 places, 23 transitions, 141 flow [2022-11-25 15:47:04,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=43, PETRI_TRANSITIONS=23} [2022-11-25 15:47:04,118 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2022-11-25 15:47:04,118 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 23 transitions, 141 flow [2022-11-25 15:47:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:47:04,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:47:04,119 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-25 15:47:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:47:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 615845544, now seen corresponding path program 1 times [2022-11-25 15:47:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:47:04,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117345670] [2022-11-25 15:47:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:47:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:47:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:47:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:47:04,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:47:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117345670] [2022-11-25 15:47:04,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117345670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:47:04,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:47:04,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:47:04,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889878927] [2022-11-25 15:47:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:47:04,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:47:04,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:47:04,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:47:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:47:04,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 199 [2022-11-25 15:47:04,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 23 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:47:04,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 199 [2022-11-25 15:47:04,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:47:04,344 INFO L130 PetriNetUnfolder]: 21/55 cut-off events. [2022-11-25 15:47:04,344 INFO L131 PetriNetUnfolder]: For 107/107 co-relation queries the response was YES. [2022-11-25 15:47:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 55 events. 21/55 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 4 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 214. Up to 35 conditions per place. [2022-11-25 15:47:04,345 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2022-11-25 15:47:04,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 222 flow [2022-11-25 15:47:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:47:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:47:04,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 446 transitions. [2022-11-25 15:47:04,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4482412060301508 [2022-11-25 15:47:04,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 446 transitions. [2022-11-25 15:47:04,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 446 transitions. [2022-11-25 15:47:04,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:47:04,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 446 transitions. [2022-11-25 15:47:04,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,354 INFO L175 Difference]: Start difference. First operand has 43 places, 23 transitions, 141 flow. Second operand 5 states and 446 transitions. [2022-11-25 15:47:04,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 222 flow [2022-11-25 15:47:04,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 28 transitions, 182 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-25 15:47:04,356 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2022-11-25 15:47:04,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2022-11-25 15:47:04,357 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2022-11-25 15:47:04,357 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2022-11-25 15:47:04,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:47:04,361 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2022-11-25 15:47:04,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2022-11-25 15:47:04,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2022-11-25 15:47:04,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2022-11-25 15:47:04,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2022-11-25 15:47:04,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2022-11-25 15:47:04,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2022-11-25 15:47:04,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2022-11-25 15:47:04,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2022-11-25 15:47:04,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2022-11-25 15:47:04,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2022-11-25 15:47:04,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:47:04,365 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:47:04,369 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:47:04,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:47:04,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:47:04 BasicIcfg [2022-11-25 15:47:04,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:47:04,374 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:47:04,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:47:04,374 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:47:04,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:46:53" (3/4) ... [2022-11-25 15:47:04,379 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:47:04,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-25 15:47:04,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-25 15:47:04,387 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-25 15:47:04,392 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-25 15:47:04,393 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 15:47:04,393 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 15:47:04,393 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:47:04,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:47:04,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:47:04,432 INFO L158 Benchmark]: Toolchain (without parser) took 12599.31ms. Allocated memory was 134.2MB in the beginning and 209.7MB in the end (delta: 75.5MB). Free memory was 75.0MB in the beginning and 135.0MB in the end (delta: -60.0MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-25 15:47:04,433 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:47:04,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.03ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 74.8MB in the beginning and 130.1MB in the end (delta: -55.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 15:47:04,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.84ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 128.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:47:04,434 INFO L158 Benchmark]: Boogie Preprocessor took 30.76ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 126.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:47:04,434 INFO L158 Benchmark]: RCFGBuilder took 684.62ms. Allocated memory is still 174.1MB. Free memory was 126.5MB in the beginning and 111.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:47:04,435 INFO L158 Benchmark]: TraceAbstraction took 10994.02ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 111.3MB in the beginning and 138.2MB in the end (delta: -26.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-25 15:47:04,435 INFO L158 Benchmark]: Witness Printer took 57.52ms. Allocated memory is still 209.7MB. Free memory was 138.2MB in the beginning and 135.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:47:04,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.03ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 74.8MB in the beginning and 130.1MB in the end (delta: -55.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.84ms. Allocated memory is still 174.1MB. Free memory was 130.1MB in the beginning and 128.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.76ms. Allocated memory is still 174.1MB. Free memory was 128.0MB in the beginning and 126.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.62ms. Allocated memory is still 174.1MB. Free memory was 126.5MB in the beginning and 111.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10994.02ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 111.3MB in the beginning and 138.2MB in the end (delta: -26.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Witness Printer took 57.52ms. Allocated memory is still 209.7MB. Free memory was 138.2MB in the beginning and 135.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 102 PlacesBefore, 34 PlacesAfterwards, 94 TransitionsBefore, 24 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 97 TotalNumberOfCompositions, 3288 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2058, independent: 1957, independent conditional: 0, independent unconditional: 1957, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1233, independent: 1189, independent conditional: 0, independent unconditional: 1189, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1233, independent: 1181, independent conditional: 0, independent unconditional: 1181, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 202, independent: 39, independent conditional: 0, independent unconditional: 39, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2058, independent: 768, independent conditional: 0, independent unconditional: 768, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 1233, unknown conditional: 0, unknown unconditional: 1233] , Statistics on independence cache: Total cache size (in pairs): 98, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 125 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 552 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 377 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 991 IncrementalHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 61 mSDtfsCounter, 991 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=7, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 967 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 15:47:04,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e96410f1-13c2-4c5d-9b6f-0d294de9597a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE