./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:31:19,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:31:19,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:31:19,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:31:19,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:31:19,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:31:19,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:31:19,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:31:19,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:31:19,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:31:19,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:31:19,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:31:19,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:31:19,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:31:19,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:31:19,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:31:19,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:31:19,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:31:19,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:31:19,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:31:19,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:31:19,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:31:19,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:31:19,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:31:19,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:31:19,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:31:19,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:31:19,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:31:19,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:31:19,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:31:19,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:31:19,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:31:19,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:31:19,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:31:19,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:31:19,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:31:19,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:31:19,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:31:19,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:31:19,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:31:19,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:31:19,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 11:31:19,450 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:31:19,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:31:19,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:31:19,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:31:19,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:31:19,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:31:19,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:31:19,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:31:19,452 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:31:19,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:31:19,452 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:31:19,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:31:19,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:31:19,453 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:31:19,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:31:19,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:31:19,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:31:19,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:31:19,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:31:19,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:31:19,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:31:19,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:31:19,455 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:31:19,455 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:31:19,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:31:19,455 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:31:19,455 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_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b38e7cb0150abfd3f300ad6ccdd66bb35d80de0668e553c35b4b9d13b84c85b [2022-12-13 11:31:19,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:31:19,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:31:19,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:31:19,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:31:19,682 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:31:19,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-12-13 11:31:22,229 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:31:22,368 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:31:22,368 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/sv-benchmarks/c/weaver/test-easy10.wvr.c [2022-12-13 11:31:22,373 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/data/8c282ac3a/0c78e15711a7476087e806b68e7adcab/FLAGe42a6332d [2022-12-13 11:31:22,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/data/8c282ac3a/0c78e15711a7476087e806b68e7adcab [2022-12-13 11:31:22,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:31:22,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:31:22,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:31:22,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:31:22,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:31:22,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a4a6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22, skipping insertion in model container [2022-12-13 11:31:22,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:31:22,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:31:22,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,546 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,552 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_54a7b058-42f8-4463-b3cd-d41bf11479d8/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-12-13 11:31:22,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:31:22,568 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:31:22,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,578 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:31:22,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:31:22,594 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_54a7b058-42f8-4463-b3cd-d41bf11479d8/sv-benchmarks/c/weaver/test-easy10.wvr.c[3907,3920] [2022-12-13 11:31:22,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:31:22,606 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:31:22,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22 WrapperNode [2022-12-13 11:31:22,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:31:22,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:31:22,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:31:22,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:31:22,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,637 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-12-13 11:31:22,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:31:22,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:31:22,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:31:22,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:31:22,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:31:22,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:31:22,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:31:22,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:31:22,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (1/1) ... [2022-12-13 11:31:22,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:31:22,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:22,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:31:22,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54a7b058-42f8-4463-b3cd-d41bf11479d8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:31:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:31:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:31:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:31:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:31:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:31:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:31:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:31:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 11:31:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 11:31:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:31:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:31:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:31:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:31:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:31:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:31:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:31:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:31:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:31:22,716 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:31:22,805 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:31:22,807 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:31:23,101 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:31:23,164 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:31:23,164 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:31:23,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:31:23 BoogieIcfgContainer [2022-12-13 11:31:23,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:31:23,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:31:23,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:31:23,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:31:23,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:31:22" (1/3) ... [2022-12-13 11:31:23,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b06dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:31:23, skipping insertion in model container [2022-12-13 11:31:23,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:31:22" (2/3) ... [2022-12-13 11:31:23,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b06dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:31:23, skipping insertion in model container [2022-12-13 11:31:23,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:31:23" (3/3) ... [2022-12-13 11:31:23,175 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-12-13 11:31:23,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:31:23,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 11:31:23,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:31:23,265 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 11:31:23,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 158 transitions, 348 flow [2022-12-13 11:31:23,367 INFO L130 PetriNetUnfolder]: 2/154 cut-off events. [2022-12-13 11:31:23,367 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 11:31:23,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 154 events. 2/154 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-13 11:31:23,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 158 transitions, 348 flow [2022-12-13 11:31:23,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 149 transitions, 322 flow [2022-12-13 11:31:23,386 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:31:23,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 149 transitions, 322 flow [2022-12-13 11:31:23,397 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 149 transitions, 322 flow [2022-12-13 11:31:23,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 149 transitions, 322 flow [2022-12-13 11:31:23,420 INFO L130 PetriNetUnfolder]: 2/149 cut-off events. [2022-12-13 11:31:23,421 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 11:31:23,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 149 events. 2/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-12-13 11:31:23,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 2336 [2022-12-13 11:31:27,372 INFO L134 LiptonReduction]: Checked pairs total: 14428 [2022-12-13 11:31:27,372 INFO L136 LiptonReduction]: Total number of compositions: 126 [2022-12-13 11:31:27,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:31:27,392 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;@7e9cc653, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:31:27,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 11:31:27,394 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 11:31:27,394 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:27,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:27,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 11:31:27,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:27,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:27,398 INFO L85 PathProgramCache]: Analyzing trace with hash 590, now seen corresponding path program 1 times [2022-12-13 11:31:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:27,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26602782] [2022-12-13 11:31:27,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:27,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26602782] [2022-12-13 11:31:27,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26602782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:27,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:27,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 11:31:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012813145] [2022-12-13 11:31:27,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:27,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:31:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:27,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:31:27,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:31:27,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 284 [2022-12-13 11:31:27,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 140 flow. Second operand has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:27,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:27,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 284 [2022-12-13 11:31:27,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:27,752 INFO L130 PetriNetUnfolder]: 1328/2127 cut-off events. [2022-12-13 11:31:27,752 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 11:31:27,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 2127 events. 1328/2127 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13620 event pairs, 1328 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 3308. Up to 1968 conditions per place. [2022-12-13 11:31:27,771 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 39 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2022-12-13 11:31:27,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 212 flow [2022-12-13 11:31:27,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:31:27,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 11:31:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 328 transitions. [2022-12-13 11:31:27,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5774647887323944 [2022-12-13 11:31:27,786 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 328 transitions. [2022-12-13 11:31:27,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 328 transitions. [2022-12-13 11:31:27,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:27,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 328 transitions. [2022-12-13 11:31:27,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 164.0) internal successors, (328), 2 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:27,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:27,799 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:27,801 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 140 flow. Second operand 2 states and 328 transitions. [2022-12-13 11:31:27,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 212 flow [2022-12-13 11:31:27,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 196 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 11:31:27,811 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 118 flow [2022-12-13 11:31:27,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2022-12-13 11:31:27,816 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2022-12-13 11:31:27,816 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 118 flow [2022-12-13 11:31:27,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:27,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:27,817 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:31:27,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:31:27,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:27,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash 579667, now seen corresponding path program 1 times [2022-12-13 11:31:27,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:27,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776215204] [2022-12-13 11:31:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:28,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:28,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776215204] [2022-12-13 11:31:28,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776215204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:28,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:28,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:31:28,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418276211] [2022-12-13 11:31:28,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:28,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:28,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:28,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 284 [2022-12-13 11:31:28,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:28,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 284 [2022-12-13 11:31:28,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:28,331 INFO L130 PetriNetUnfolder]: 1272/2041 cut-off events. [2022-12-13 11:31:28,332 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:28,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 2041 events. 1272/2041 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12953 event pairs, 1272 based on Foata normal form. 0/1457 useless extension candidates. Maximal degree in co-relation 3962. Up to 1881 conditions per place. [2022-12-13 11:31:28,342 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 36 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2022-12-13 11:31:28,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 188 flow [2022-12-13 11:31:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:28,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2022-12-13 11:31:28,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5316901408450704 [2022-12-13 11:31:28,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2022-12-13 11:31:28,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2022-12-13 11:31:28,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:28,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2022-12-13 11:31:28,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,348 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 118 flow. Second operand 3 states and 453 transitions. [2022-12-13 11:31:28,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 188 flow [2022-12-13 11:31:28,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:31:28,349 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 116 flow [2022-12-13 11:31:28,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2022-12-13 11:31:28,350 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2022-12-13 11:31:28,350 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 116 flow [2022-12-13 11:31:28,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:28,351 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:31:28,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:31:28,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:28,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:28,351 INFO L85 PathProgramCache]: Analyzing trace with hash 579665, now seen corresponding path program 1 times [2022-12-13 11:31:28,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:28,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632603615] [2022-12-13 11:31:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:28,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:28,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:28,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632603615] [2022-12-13 11:31:28,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632603615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:28,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:28,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:31:28,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380273840] [2022-12-13 11:31:28,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:28,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:28,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:28,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:28,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 284 [2022-12-13 11:31:28,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:28,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 284 [2022-12-13 11:31:28,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:28,682 INFO L130 PetriNetUnfolder]: 1216/1955 cut-off events. [2022-12-13 11:31:28,682 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:28,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1955 events. 1216/1955 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12359 event pairs, 1216 based on Foata normal form. 0/1403 useless extension candidates. Maximal degree in co-relation 3791. Up to 1795 conditions per place. [2022-12-13 11:31:28,691 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 34 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-12-13 11:31:28,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 182 flow [2022-12-13 11:31:28,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:28,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2022-12-13 11:31:28,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5082159624413145 [2022-12-13 11:31:28,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2022-12-13 11:31:28,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2022-12-13 11:31:28,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:28,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2022-12-13 11:31:28,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,702 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 116 flow. Second operand 3 states and 433 transitions. [2022-12-13 11:31:28,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 182 flow [2022-12-13 11:31:28,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:28,703 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 113 flow [2022-12-13 11:31:28,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2022-12-13 11:31:28,704 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2022-12-13 11:31:28,704 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 113 flow [2022-12-13 11:31:28,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:28,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:31:28,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:31:28,705 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:28,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:28,705 INFO L85 PathProgramCache]: Analyzing trace with hash 557072798, now seen corresponding path program 1 times [2022-12-13 11:31:28,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:28,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077824628] [2022-12-13 11:31:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:28,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:28,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:28,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077824628] [2022-12-13 11:31:28,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077824628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:28,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:28,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:31:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828557111] [2022-12-13 11:31:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:28,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:28,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 284 [2022-12-13 11:31:28,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:28,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:28,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 284 [2022-12-13 11:31:28,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:29,037 INFO L130 PetriNetUnfolder]: 1192/1913 cut-off events. [2022-12-13 11:31:29,037 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1913 events. 1192/1913 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12088 event pairs, 1192 based on Foata normal form. 0/1385 useless extension candidates. Maximal degree in co-relation 3708. Up to 1753 conditions per place. [2022-12-13 11:31:29,045 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 32 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2022-12-13 11:31:29,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 175 flow [2022-12-13 11:31:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:29,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-12-13 11:31:29,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5269953051643192 [2022-12-13 11:31:29,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-12-13 11:31:29,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-12-13 11:31:29,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:29,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-12-13 11:31:29,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,050 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,050 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 113 flow. Second operand 3 states and 449 transitions. [2022-12-13 11:31:29,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 175 flow [2022-12-13 11:31:29,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:29,051 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 110 flow [2022-12-13 11:31:29,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2022-12-13 11:31:29,052 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2022-12-13 11:31:29,052 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 110 flow [2022-12-13 11:31:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:29,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:31:29,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:31:29,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 557072797, now seen corresponding path program 1 times [2022-12-13 11:31:29,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:29,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933549544] [2022-12-13 11:31:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:29,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:29,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933549544] [2022-12-13 11:31:29,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933549544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:29,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:29,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:31:29,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051550810] [2022-12-13 11:31:29,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:29,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:29,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:29,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:29,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:29,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 284 [2022-12-13 11:31:29,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:29,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 284 [2022-12-13 11:31:29,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:29,352 INFO L130 PetriNetUnfolder]: 1168/1871 cut-off events. [2022-12-13 11:31:29,352 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:29,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 1871 events. 1168/1871 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11747 event pairs, 1168 based on Foata normal form. 0/1367 useless extension candidates. Maximal degree in co-relation 3625. Up to 1711 conditions per place. [2022-12-13 11:31:29,365 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 30 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2022-12-13 11:31:29,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 168 flow [2022-12-13 11:31:29,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2022-12-13 11:31:29,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5035211267605634 [2022-12-13 11:31:29,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2022-12-13 11:31:29,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2022-12-13 11:31:29,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:29,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2022-12-13 11:31:29,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,371 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 110 flow. Second operand 3 states and 429 transitions. [2022-12-13 11:31:29,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 168 flow [2022-12-13 11:31:29,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:29,373 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 107 flow [2022-12-13 11:31:29,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2022-12-13 11:31:29,374 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2022-12-13 11:31:29,374 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 107 flow [2022-12-13 11:31:29,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:29,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:31:29,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1523941337, now seen corresponding path program 1 times [2022-12-13 11:31:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:29,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352455147] [2022-12-13 11:31:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:29,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352455147] [2022-12-13 11:31:29,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352455147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:29,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:29,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:31:29,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680064583] [2022-12-13 11:31:29,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:29,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:29,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 284 [2022-12-13 11:31:29,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:29,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 284 [2022-12-13 11:31:29,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:29,613 INFO L130 PetriNetUnfolder]: 1112/1785 cut-off events. [2022-12-13 11:31:29,613 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:29,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3458 conditions, 1785 events. 1112/1785 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11114 event pairs, 1112 based on Foata normal form. 0/1332 useless extension candidates. Maximal degree in co-relation 3454. Up to 1625 conditions per place. [2022-12-13 11:31:29,621 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 28 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2022-12-13 11:31:29,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 161 flow [2022-12-13 11:31:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2022-12-13 11:31:29,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5011737089201878 [2022-12-13 11:31:29,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2022-12-13 11:31:29,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2022-12-13 11:31:29,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:29,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2022-12-13 11:31:29,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,625 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 107 flow. Second operand 3 states and 427 transitions. [2022-12-13 11:31:29,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 161 flow [2022-12-13 11:31:29,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:29,626 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 104 flow [2022-12-13 11:31:29,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2022-12-13 11:31:29,627 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -14 predicate places. [2022-12-13 11:31:29,627 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 104 flow [2022-12-13 11:31:29,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,627 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:29,627 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:29,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:31:29,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:29,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1523941338, now seen corresponding path program 1 times [2022-12-13 11:31:29,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:29,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416490403] [2022-12-13 11:31:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:29,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:29,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:29,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416490403] [2022-12-13 11:31:29,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416490403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:29,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:29,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:31:29,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153330766] [2022-12-13 11:31:29,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:29,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:29,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:29,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:29,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 284 [2022-12-13 11:31:29,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:29,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 284 [2022-12-13 11:31:29,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:29,839 INFO L130 PetriNetUnfolder]: 1056/1699 cut-off events. [2022-12-13 11:31:29,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:29,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3287 conditions, 1699 events. 1056/1699 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10489 event pairs, 1056 based on Foata normal form. 0/1297 useless extension candidates. Maximal degree in co-relation 3283. Up to 1539 conditions per place. [2022-12-13 11:31:29,845 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 26 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-12-13 11:31:29,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 154 flow [2022-12-13 11:31:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2022-12-13 11:31:29,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5199530516431925 [2022-12-13 11:31:29,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2022-12-13 11:31:29,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2022-12-13 11:31:29,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:29,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2022-12-13 11:31:29,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,850 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 104 flow. Second operand 3 states and 443 transitions. [2022-12-13 11:31:29,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 154 flow [2022-12-13 11:31:29,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 43 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:29,851 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 101 flow [2022-12-13 11:31:29,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2022-12-13 11:31:29,851 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2022-12-13 11:31:29,851 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 101 flow [2022-12-13 11:31:29,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:29,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:29,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:29,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:31:29,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash 76234958, now seen corresponding path program 1 times [2022-12-13 11:31:29,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:29,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216640953] [2022-12-13 11:31:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:29,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216640953] [2022-12-13 11:31:29,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216640953] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:29,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:29,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:31:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581637957] [2022-12-13 11:31:29,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:29,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:31:29,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:31:29,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:31:30,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 284 [2022-12-13 11:31:30,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 101 flow. Second operand has 6 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:30,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 284 [2022-12-13 11:31:30,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:30,210 INFO L130 PetriNetUnfolder]: 840/1402 cut-off events. [2022-12-13 11:31:30,211 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:30,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1402 events. 840/1402 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8562 event pairs, 840 based on Foata normal form. 0/1144 useless extension candidates. Maximal degree in co-relation 2690. Up to 1242 conditions per place. [2022-12-13 11:31:30,215 INFO L137 encePairwiseOnDemand]: 282/284 looper letters, 25 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 11:31:30,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 151 flow [2022-12-13 11:31:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-13 11:31:30,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45422535211267606 [2022-12-13 11:31:30,217 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-12-13 11:31:30,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-12-13 11:31:30,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:30,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-12-13 11:31:30,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,219 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 101 flow. Second operand 3 states and 387 transitions. [2022-12-13 11:31:30,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 151 flow [2022-12-13 11:31:30,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:30,220 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 100 flow [2022-12-13 11:31:30,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2022-12-13 11:31:30,220 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2022-12-13 11:31:30,221 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 100 flow [2022-12-13 11:31:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.5) internal successors, (729), 6 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:30,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:31:30,221 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash 76234957, now seen corresponding path program 1 times [2022-12-13 11:31:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:30,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048075552] [2022-12-13 11:31:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:30,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:30,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048075552] [2022-12-13 11:31:30,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048075552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:30,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:30,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:31:30,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991601225] [2022-12-13 11:31:30,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:30,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:30,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:30,286 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 284 [2022-12-13 11:31:30,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:30,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 284 [2022-12-13 11:31:30,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:30,382 INFO L130 PetriNetUnfolder]: 624/1105 cut-off events. [2022-12-13 11:31:30,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:31:30,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1105 events. 624/1105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6706 event pairs, 624 based on Foata normal form. 0/991 useless extension candidates. Maximal degree in co-relation 2097. Up to 945 conditions per place. [2022-12-13 11:31:30,388 INFO L137 encePairwiseOnDemand]: 282/284 looper letters, 24 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-12-13 11:31:30,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 41 transitions, 148 flow [2022-12-13 11:31:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:30,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2022-12-13 11:31:30,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4988262910798122 [2022-12-13 11:31:30,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2022-12-13 11:31:30,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2022-12-13 11:31:30,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:30,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2022-12-13 11:31:30,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,391 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 100 flow. Second operand 3 states and 425 transitions. [2022-12-13 11:31:30,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 41 transitions, 148 flow [2022-12-13 11:31:30,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:30,392 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 99 flow [2022-12-13 11:31:30,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2022-12-13 11:31:30,393 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -15 predicate places. [2022-12-13 11:31:30,393 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 99 flow [2022-12-13 11:31:30,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:30,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:30,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:31:30,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:30,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:30,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2000873880, now seen corresponding path program 1 times [2022-12-13 11:31:30,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:30,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934411647] [2022-12-13 11:31:30,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:30,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:30,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:30,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934411647] [2022-12-13 11:31:30,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934411647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:30,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:30,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:31:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555520282] [2022-12-13 11:31:30,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:30,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:30,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:30,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:30,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 284 [2022-12-13 11:31:30,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:30,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 284 [2022-12-13 11:31:30,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:30,772 INFO L130 PetriNetUnfolder]: 665/1143 cut-off events. [2022-12-13 11:31:30,772 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 11:31:30,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2205 conditions, 1143 events. 665/1143 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6174 event pairs, 492 based on Foata normal form. 26/1153 useless extension candidates. Maximal degree in co-relation 2201. Up to 960 conditions per place. [2022-12-13 11:31:30,776 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2022-12-13 11:31:30,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 189 flow [2022-12-13 11:31:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2022-12-13 11:31:30,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5387323943661971 [2022-12-13 11:31:30,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2022-12-13 11:31:30,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2022-12-13 11:31:30,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:30,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2022-12-13 11:31:30,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,784 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 99 flow. Second operand 3 states and 459 transitions. [2022-12-13 11:31:30,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 189 flow [2022-12-13 11:31:30,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:31:30,785 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 106 flow [2022-12-13 11:31:30,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2022-12-13 11:31:30,786 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -13 predicate places. [2022-12-13 11:31:30,786 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 106 flow [2022-12-13 11:31:30,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:30,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:30,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:31:30,786 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:30,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:30,787 INFO L85 PathProgramCache]: Analyzing trace with hash 213313696, now seen corresponding path program 2 times [2022-12-13 11:31:30,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:30,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294666345] [2022-12-13 11:31:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:30,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:30,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:30,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294666345] [2022-12-13 11:31:30,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294666345] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:30,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:30,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:31:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176189981] [2022-12-13 11:31:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:30,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:30,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 284 [2022-12-13 11:31:30,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:30,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:30,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 284 [2022-12-13 11:31:30,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:31,132 INFO L130 PetriNetUnfolder]: 667/1147 cut-off events. [2022-12-13 11:31:31,132 INFO L131 PetriNetUnfolder]: For 97/101 co-relation queries the response was YES. [2022-12-13 11:31:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 1147 events. 667/1147 cut-off events. For 97/101 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6264 event pairs, 492 based on Foata normal form. 24/1146 useless extension candidates. Maximal degree in co-relation 2291. Up to 964 conditions per place. [2022-12-13 11:31:31,138 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-13 11:31:31,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 205 flow [2022-12-13 11:31:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2022-12-13 11:31:31,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5410798122065728 [2022-12-13 11:31:31,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2022-12-13 11:31:31,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2022-12-13 11:31:31,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:31,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2022-12-13 11:31:31,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,142 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 106 flow. Second operand 3 states and 461 transitions. [2022-12-13 11:31:31,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 205 flow [2022-12-13 11:31:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:31:31,143 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 110 flow [2022-12-13 11:31:31,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2022-12-13 11:31:31,144 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2022-12-13 11:31:31,144 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 110 flow [2022-12-13 11:31:31,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:31,144 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:31,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:31:31,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:31,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:31,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1757932140, now seen corresponding path program 3 times [2022-12-13 11:31:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:31,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234230839] [2022-12-13 11:31:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:31,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:31,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:31,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234230839] [2022-12-13 11:31:31,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234230839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:31,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:31,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:31:31,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791147823] [2022-12-13 11:31:31,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:31,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:31,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:31,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:31,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:31,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 284 [2022-12-13 11:31:31,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:31,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 284 [2022-12-13 11:31:31,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:31,508 INFO L130 PetriNetUnfolder]: 707/1233 cut-off events. [2022-12-13 11:31:31,508 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2022-12-13 11:31:31,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 1233 events. 707/1233 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6758 event pairs, 176 based on Foata normal form. 13/1209 useless extension candidates. Maximal degree in co-relation 2560. Up to 936 conditions per place. [2022-12-13 11:31:31,513 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-13 11:31:31,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 213 flow [2022-12-13 11:31:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2022-12-13 11:31:31,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5410798122065728 [2022-12-13 11:31:31,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2022-12-13 11:31:31,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2022-12-13 11:31:31,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:31,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2022-12-13 11:31:31,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,517 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 110 flow. Second operand 3 states and 461 transitions. [2022-12-13 11:31:31,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 213 flow [2022-12-13 11:31:31,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:31:31,518 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 114 flow [2022-12-13 11:31:31,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2022-12-13 11:31:31,519 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -11 predicate places. [2022-12-13 11:31:31,519 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 114 flow [2022-12-13 11:31:31,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:31,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:31,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:31:31,520 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:31,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:31,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1038557740, now seen corresponding path program 4 times [2022-12-13 11:31:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:31,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354540701] [2022-12-13 11:31:31,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:31,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:31,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:31,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354540701] [2022-12-13 11:31:31,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354540701] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:31,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:31,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:31:31,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846715171] [2022-12-13 11:31:31,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:31,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:31:31,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:31,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:31:31,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:31:31,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 284 [2022-12-13 11:31:31,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:31,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 284 [2022-12-13 11:31:31,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:31,863 INFO L130 PetriNetUnfolder]: 581/1035 cut-off events. [2022-12-13 11:31:31,864 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-12-13 11:31:31,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2215 conditions, 1035 events. 581/1035 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5426 event pairs, 176 based on Foata normal form. 23/1012 useless extension candidates. Maximal degree in co-relation 2208. Up to 756 conditions per place. [2022-12-13 11:31:31,867 INFO L137 encePairwiseOnDemand]: 281/284 looper letters, 33 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2022-12-13 11:31:31,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 208 flow [2022-12-13 11:31:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:31:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:31:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2022-12-13 11:31:31,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5387323943661971 [2022-12-13 11:31:31,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2022-12-13 11:31:31,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2022-12-13 11:31:31,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:31,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2022-12-13 11:31:31,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,873 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 114 flow. Second operand 3 states and 459 transitions. [2022-12-13 11:31:31,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 208 flow [2022-12-13 11:31:31,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:31:31,874 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 118 flow [2022-12-13 11:31:31,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2022-12-13 11:31:31,875 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2022-12-13 11:31:31,875 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 118 flow [2022-12-13 11:31:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:31,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:31,876 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:31,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:31:31,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:31,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1069728340, now seen corresponding path program 5 times [2022-12-13 11:31:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:31,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773666181] [2022-12-13 11:31:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:33,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:33,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773666181] [2022-12-13 11:31:33,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773666181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:33,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:33,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:31:33,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489862903] [2022-12-13 11:31:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:33,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:31:33,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:33,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:31:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:31:33,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:31:33,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 118 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:33,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:33,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:31:33,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:35,850 INFO L130 PetriNetUnfolder]: 6960/10414 cut-off events. [2022-12-13 11:31:35,851 INFO L131 PetriNetUnfolder]: For 2039/2039 co-relation queries the response was YES. [2022-12-13 11:31:35,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22953 conditions, 10414 events. 6960/10414 cut-off events. For 2039/2039 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 56467 event pairs, 1297 based on Foata normal form. 1/10415 useless extension candidates. Maximal degree in co-relation 22945. Up to 3144 conditions per place. [2022-12-13 11:31:35,890 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 202 selfloop transitions, 13 changer transitions 16/235 dead transitions. [2022-12-13 11:31:35,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 235 transitions, 1055 flow [2022-12-13 11:31:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:31:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:31:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1842 transitions. [2022-12-13 11:31:35,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46327967806841047 [2022-12-13 11:31:35,894 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1842 transitions. [2022-12-13 11:31:35,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1842 transitions. [2022-12-13 11:31:35,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:35,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1842 transitions. [2022-12-13 11:31:35,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.57142857142858) internal successors, (1842), 14 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:35,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:35,903 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:35,903 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 118 flow. Second operand 14 states and 1842 transitions. [2022-12-13 11:31:35,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 235 transitions, 1055 flow [2022-12-13 11:31:35,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 235 transitions, 1051 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:31:35,907 INFO L231 Difference]: Finished difference. Result has 84 places, 53 transitions, 219 flow [2022-12-13 11:31:35,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=219, PETRI_PLACES=84, PETRI_TRANSITIONS=53} [2022-12-13 11:31:35,908 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-12-13 11:31:35,908 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 53 transitions, 219 flow [2022-12-13 11:31:35,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:35,908 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:35,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:31:35,909 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1439439884, now seen corresponding path program 6 times [2022-12-13 11:31:35,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:35,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595197018] [2022-12-13 11:31:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:37,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:37,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595197018] [2022-12-13 11:31:37,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595197018] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:37,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:37,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:31:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054324453] [2022-12-13 11:31:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:31:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:31:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:31:37,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:31:37,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 53 transitions, 219 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:37,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:37,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:31:37,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:41,031 INFO L130 PetriNetUnfolder]: 15410/23620 cut-off events. [2022-12-13 11:31:41,032 INFO L131 PetriNetUnfolder]: For 24205/24205 co-relation queries the response was YES. [2022-12-13 11:31:41,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70293 conditions, 23620 events. 15410/23620 cut-off events. For 24205/24205 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 154148 event pairs, 2457 based on Foata normal form. 1/23621 useless extension candidates. Maximal degree in co-relation 70273. Up to 7997 conditions per place. [2022-12-13 11:31:41,144 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 263 selfloop transitions, 24 changer transitions 9/300 dead transitions. [2022-12-13 11:31:41,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 300 transitions, 1776 flow [2022-12-13 11:31:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:31:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:31:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1848 transitions. [2022-12-13 11:31:41,148 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2022-12-13 11:31:41,148 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1848 transitions. [2022-12-13 11:31:41,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1848 transitions. [2022-12-13 11:31:41,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:41,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1848 transitions. [2022-12-13 11:31:41,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.0) internal successors, (1848), 14 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:41,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:41,155 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:41,156 INFO L175 Difference]: Start difference. First operand has 84 places, 53 transitions, 219 flow. Second operand 14 states and 1848 transitions. [2022-12-13 11:31:41,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 300 transitions, 1776 flow [2022-12-13 11:31:41,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 300 transitions, 1732 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-12-13 11:31:41,517 INFO L231 Difference]: Finished difference. Result has 104 places, 74 transitions, 458 flow [2022-12-13 11:31:41,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=458, PETRI_PLACES=104, PETRI_TRANSITIONS=74} [2022-12-13 11:31:41,518 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2022-12-13 11:31:41,518 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 74 transitions, 458 flow [2022-12-13 11:31:41,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:41,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:41,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:41,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:31:41,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:41,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1990147688, now seen corresponding path program 7 times [2022-12-13 11:31:41,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:41,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181502964] [2022-12-13 11:31:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:42,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:42,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181502964] [2022-12-13 11:31:42,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181502964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:42,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:42,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:31:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335807044] [2022-12-13 11:31:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:42,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:31:42,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:31:42,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:31:43,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:31:43,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 74 transitions, 458 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:43,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:43,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:31:43,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:47,785 INFO L130 PetriNetUnfolder]: 21569/33594 cut-off events. [2022-12-13 11:31:47,785 INFO L131 PetriNetUnfolder]: For 78507/78507 co-relation queries the response was YES. [2022-12-13 11:31:47,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120047 conditions, 33594 events. 21569/33594 cut-off events. For 78507/78507 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 237565 event pairs, 5085 based on Foata normal form. 1/33591 useless extension candidates. Maximal degree in co-relation 120017. Up to 9704 conditions per place. [2022-12-13 11:31:47,992 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 278 selfloop transitions, 42 changer transitions 10/334 dead transitions. [2022-12-13 11:31:47,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 334 transitions, 2423 flow [2022-12-13 11:31:47,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:31:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:31:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1844 transitions. [2022-12-13 11:31:47,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46378269617706236 [2022-12-13 11:31:47,997 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1844 transitions. [2022-12-13 11:31:47,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1844 transitions. [2022-12-13 11:31:47,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:47,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1844 transitions. [2022-12-13 11:31:48,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.71428571428572) internal successors, (1844), 14 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:48,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:48,008 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:48,008 INFO L175 Difference]: Start difference. First operand has 104 places, 74 transitions, 458 flow. Second operand 14 states and 1844 transitions. [2022-12-13 11:31:48,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 334 transitions, 2423 flow [2022-12-13 11:31:48,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 334 transitions, 2375 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-12-13 11:31:48,508 INFO L231 Difference]: Finished difference. Result has 126 places, 103 transitions, 903 flow [2022-12-13 11:31:48,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=903, PETRI_PLACES=126, PETRI_TRANSITIONS=103} [2022-12-13 11:31:48,508 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 55 predicate places. [2022-12-13 11:31:48,508 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 103 transitions, 903 flow [2022-12-13 11:31:48,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:48,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:31:48,509 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:48,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 11:31:48,509 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:31:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:48,510 INFO L85 PathProgramCache]: Analyzing trace with hash 815944000, now seen corresponding path program 8 times [2022-12-13 11:31:48,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:48,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139028598] [2022-12-13 11:31:48,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:48,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:31:49,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:49,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139028598] [2022-12-13 11:31:49,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139028598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:49,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:49,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:31:49,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679078372] [2022-12-13 11:31:49,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:49,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:31:49,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:31:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:31:50,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:31:50,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 103 transitions, 903 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:50,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:31:50,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:31:50,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:31:58,651 INFO L130 PetriNetUnfolder]: 39345/62741 cut-off events. [2022-12-13 11:31:58,651 INFO L131 PetriNetUnfolder]: For 321337/321337 co-relation queries the response was YES. [2022-12-13 11:31:59,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271108 conditions, 62741 events. 39345/62741 cut-off events. For 321337/321337 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 512502 event pairs, 8295 based on Foata normal form. 1/62742 useless extension candidates. Maximal degree in co-relation 271067. Up to 20347 conditions per place. [2022-12-13 11:31:59,308 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 346 selfloop transitions, 49 changer transitions 9/408 dead transitions. [2022-12-13 11:31:59,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 408 transitions, 3974 flow [2022-12-13 11:31:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:31:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:31:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1842 transitions. [2022-12-13 11:31:59,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46327967806841047 [2022-12-13 11:31:59,312 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1842 transitions. [2022-12-13 11:31:59,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1842 transitions. [2022-12-13 11:31:59,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:31:59,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1842 transitions. [2022-12-13 11:31:59,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.57142857142858) internal successors, (1842), 14 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:59,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:59,320 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:31:59,320 INFO L175 Difference]: Start difference. First operand has 126 places, 103 transitions, 903 flow. Second operand 14 states and 1842 transitions. [2022-12-13 11:31:59,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 408 transitions, 3974 flow [2022-12-13 11:32:03,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 408 transitions, 3886 flow, removed 39 selfloop flow, removed 3 redundant places. [2022-12-13 11:32:03,216 INFO L231 Difference]: Finished difference. Result has 147 places, 141 transitions, 1573 flow [2022-12-13 11:32:03,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1573, PETRI_PLACES=147, PETRI_TRANSITIONS=141} [2022-12-13 11:32:03,216 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 76 predicate places. [2022-12-13 11:32:03,216 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 141 transitions, 1573 flow [2022-12-13 11:32:03,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:03,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:32:03,217 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:03,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:32:03,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:32:03,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1702541702, now seen corresponding path program 9 times [2022-12-13 11:32:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:03,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207908199] [2022-12-13 11:32:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:03,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:04,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:04,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207908199] [2022-12-13 11:32:04,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207908199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:32:04,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:32:04,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:32:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115332510] [2022-12-13 11:32:04,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:32:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:32:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:04,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:32:04,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:32:04,632 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:32:04,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 141 transitions, 1573 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:04,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:32:04,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:32:04,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:32:15,848 INFO L130 PetriNetUnfolder]: 46502/76192 cut-off events. [2022-12-13 11:32:15,848 INFO L131 PetriNetUnfolder]: For 561830/561830 co-relation queries the response was YES. [2022-12-13 11:32:16,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365125 conditions, 76192 events. 46502/76192 cut-off events. For 561830/561830 co-relation queries the response was YES. Maximal size of possible extension queue 2991. Compared 666906 event pairs, 13911 based on Foata normal form. 1/76193 useless extension candidates. Maximal degree in co-relation 365074. Up to 27139 conditions per place. [2022-12-13 11:32:16,699 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 376 selfloop transitions, 65 changer transitions 9/454 dead transitions. [2022-12-13 11:32:16,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 454 transitions, 4998 flow [2022-12-13 11:32:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:32:16,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:32:16,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1843 transitions. [2022-12-13 11:32:16,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46353118712273644 [2022-12-13 11:32:16,703 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1843 transitions. [2022-12-13 11:32:16,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1843 transitions. [2022-12-13 11:32:16,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:32:16,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1843 transitions. [2022-12-13 11:32:16,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.64285714285714) internal successors, (1843), 14 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:16,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:16,710 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:16,710 INFO L175 Difference]: Start difference. First operand has 147 places, 141 transitions, 1573 flow. Second operand 14 states and 1843 transitions. [2022-12-13 11:32:16,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 454 transitions, 4998 flow [2022-12-13 11:32:20,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 454 transitions, 4820 flow, removed 81 selfloop flow, removed 2 redundant places. [2022-12-13 11:32:20,654 INFO L231 Difference]: Finished difference. Result has 169 places, 181 transitions, 2318 flow [2022-12-13 11:32:20,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2318, PETRI_PLACES=169, PETRI_TRANSITIONS=181} [2022-12-13 11:32:20,655 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 98 predicate places. [2022-12-13 11:32:20,655 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 181 transitions, 2318 flow [2022-12-13 11:32:20,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:20,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:32:20,656 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:20,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:32:20,656 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:32:20,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:20,656 INFO L85 PathProgramCache]: Analyzing trace with hash 789812890, now seen corresponding path program 10 times [2022-12-13 11:32:20,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:20,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258570863] [2022-12-13 11:32:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:20,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:21,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:21,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258570863] [2022-12-13 11:32:21,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258570863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:32:21,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:32:21,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:32:21,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787250847] [2022-12-13 11:32:21,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:32:21,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:32:21,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:21,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:32:21,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:32:22,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:32:22,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 181 transitions, 2318 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:22,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:32:22,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:32:22,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:32:37,811 INFO L130 PetriNetUnfolder]: 58295/100151 cut-off events. [2022-12-13 11:32:37,811 INFO L131 PetriNetUnfolder]: For 1049852/1049852 co-relation queries the response was YES. [2022-12-13 11:32:38,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527006 conditions, 100151 events. 58295/100151 cut-off events. For 1049852/1049852 co-relation queries the response was YES. Maximal size of possible extension queue 4137. Compared 970543 event pairs, 13835 based on Foata normal form. 1/100152 useless extension candidates. Maximal degree in co-relation 526944. Up to 30992 conditions per place. [2022-12-13 11:32:38,893 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 476 selfloop transitions, 89 changer transitions 10/579 dead transitions. [2022-12-13 11:32:38,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 579 transitions, 7534 flow [2022-12-13 11:32:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:32:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:32:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1857 transitions. [2022-12-13 11:32:38,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4670523138832998 [2022-12-13 11:32:38,897 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1857 transitions. [2022-12-13 11:32:38,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1857 transitions. [2022-12-13 11:32:38,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:32:38,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1857 transitions. [2022-12-13 11:32:38,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.64285714285714) internal successors, (1857), 14 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:38,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:38,904 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:38,904 INFO L175 Difference]: Start difference. First operand has 169 places, 181 transitions, 2318 flow. Second operand 14 states and 1857 transitions. [2022-12-13 11:32:38,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 579 transitions, 7534 flow [2022-12-13 11:32:57,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 579 transitions, 7266 flow, removed 125 selfloop flow, removed 2 redundant places. [2022-12-13 11:32:57,885 INFO L231 Difference]: Finished difference. Result has 191 places, 239 transitions, 3431 flow [2022-12-13 11:32:57,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3431, PETRI_PLACES=191, PETRI_TRANSITIONS=239} [2022-12-13 11:32:57,886 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 120 predicate places. [2022-12-13 11:32:57,886 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 239 transitions, 3431 flow [2022-12-13 11:32:57,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:57,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:32:57,886 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:57,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:32:57,886 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:32:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash 881286140, now seen corresponding path program 11 times [2022-12-13 11:32:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:57,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052561235] [2022-12-13 11:32:57,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:57,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:32:58,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052561235] [2022-12-13 11:32:58,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052561235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:32:58,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:32:58,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:32:58,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867611479] [2022-12-13 11:32:58,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:32:58,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:32:58,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:58,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:32:58,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:32:59,178 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:32:59,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 239 transitions, 3431 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:32:59,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:32:59,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:32:59,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:33:19,869 INFO L130 PetriNetUnfolder]: 66006/114452 cut-off events. [2022-12-13 11:33:19,869 INFO L131 PetriNetUnfolder]: For 1462661/1462661 co-relation queries the response was YES. [2022-12-13 11:33:21,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640046 conditions, 114452 events. 66006/114452 cut-off events. For 1462661/1462661 co-relation queries the response was YES. Maximal size of possible extension queue 4985. Compared 1148451 event pairs, 18991 based on Foata normal form. 1/114453 useless extension candidates. Maximal degree in co-relation 639973. Up to 34985 conditions per place. [2022-12-13 11:33:21,393 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 500 selfloop transitions, 117 changer transitions 19/640 dead transitions. [2022-12-13 11:33:21,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 640 transitions, 9122 flow [2022-12-13 11:33:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:33:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:33:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1856 transitions. [2022-12-13 11:33:21,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46680080482897385 [2022-12-13 11:33:21,397 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1856 transitions. [2022-12-13 11:33:21,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1856 transitions. [2022-12-13 11:33:21,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:33:21,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1856 transitions. [2022-12-13 11:33:21,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.57142857142858) internal successors, (1856), 14 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:21,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:21,404 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:21,405 INFO L175 Difference]: Start difference. First operand has 191 places, 239 transitions, 3431 flow. Second operand 14 states and 1856 transitions. [2022-12-13 11:33:21,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 640 transitions, 9122 flow [2022-12-13 11:33:49,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 640 transitions, 8979 flow, removed 71 selfloop flow, removed 2 redundant places. [2022-12-13 11:33:49,894 INFO L231 Difference]: Finished difference. Result has 212 places, 282 transitions, 4592 flow [2022-12-13 11:33:49,895 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4592, PETRI_PLACES=212, PETRI_TRANSITIONS=282} [2022-12-13 11:33:49,895 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 141 predicate places. [2022-12-13 11:33:49,895 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 282 transitions, 4592 flow [2022-12-13 11:33:49,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:49,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:33:49,896 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:49,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:33:49,896 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:33:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -873984446, now seen corresponding path program 12 times [2022-12-13 11:33:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:49,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547135049] [2022-12-13 11:33:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:49,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:33:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:51,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547135049] [2022-12-13 11:33:51,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547135049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:51,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:51,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:33:51,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889986868] [2022-12-13 11:33:51,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:51,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:33:51,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:33:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:33:51,333 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:33:51,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 282 transitions, 4592 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:33:51,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:33:51,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:33:51,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:34:14,439 INFO L130 PetriNetUnfolder]: 66167/115779 cut-off events. [2022-12-13 11:34:14,439 INFO L131 PetriNetUnfolder]: For 1739986/1739986 co-relation queries the response was YES. [2022-12-13 11:34:15,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685095 conditions, 115779 events. 66167/115779 cut-off events. For 1739986/1739986 co-relation queries the response was YES. Maximal size of possible extension queue 5051. Compared 1171250 event pairs, 18211 based on Foata normal form. 1/115780 useless extension candidates. Maximal degree in co-relation 685012. Up to 34044 conditions per place. [2022-12-13 11:34:16,215 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 552 selfloop transitions, 104 changer transitions 11/671 dead transitions. [2022-12-13 11:34:16,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 671 transitions, 10887 flow [2022-12-13 11:34:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:34:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:34:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1838 transitions. [2022-12-13 11:34:16,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46227364185110664 [2022-12-13 11:34:16,219 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1838 transitions. [2022-12-13 11:34:16,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1838 transitions. [2022-12-13 11:34:16,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:34:16,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1838 transitions. [2022-12-13 11:34:16,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.28571428571428) internal successors, (1838), 14 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:16,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:16,227 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:16,227 INFO L175 Difference]: Start difference. First operand has 212 places, 282 transitions, 4592 flow. Second operand 14 states and 1838 transitions. [2022-12-13 11:34:16,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 671 transitions, 10887 flow [2022-12-13 11:34:45,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 671 transitions, 10485 flow, removed 176 selfloop flow, removed 4 redundant places. [2022-12-13 11:34:45,753 INFO L231 Difference]: Finished difference. Result has 229 places, 314 transitions, 5361 flow [2022-12-13 11:34:45,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=4436, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5361, PETRI_PLACES=229, PETRI_TRANSITIONS=314} [2022-12-13 11:34:45,754 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 158 predicate places. [2022-12-13 11:34:45,754 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 314 transitions, 5361 flow [2022-12-13 11:34:45,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:45,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:34:45,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:34:45,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 11:34:45,755 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:34:45,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -828284460, now seen corresponding path program 13 times [2022-12-13 11:34:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:34:45,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081001282] [2022-12-13 11:34:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:34:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:34:46,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:34:46,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081001282] [2022-12-13 11:34:46,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081001282] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:34:46,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:34:46,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:34:46,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351031929] [2022-12-13 11:34:46,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:34:46,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:34:46,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:34:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:34:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:34:46,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:34:46,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 314 transitions, 5361 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:34:46,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:34:46,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:34:46,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:35:12,773 INFO L130 PetriNetUnfolder]: 67813/119576 cut-off events. [2022-12-13 11:35:12,773 INFO L131 PetriNetUnfolder]: For 1930997/1930997 co-relation queries the response was YES. [2022-12-13 11:35:14,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712934 conditions, 119576 events. 67813/119576 cut-off events. For 1930997/1930997 co-relation queries the response was YES. Maximal size of possible extension queue 5311. Compared 1238142 event pairs, 16555 based on Foata normal form. 1/119577 useless extension candidates. Maximal degree in co-relation 712843. Up to 46560 conditions per place. [2022-12-13 11:35:14,454 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 599 selfloop transitions, 114 changer transitions 17/734 dead transitions. [2022-12-13 11:35:14,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 734 transitions, 12309 flow [2022-12-13 11:35:14,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:35:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:35:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1850 transitions. [2022-12-13 11:35:14,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46529175050301813 [2022-12-13 11:35:14,457 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1850 transitions. [2022-12-13 11:35:14,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1850 transitions. [2022-12-13 11:35:14,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:35:14,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1850 transitions. [2022-12-13 11:35:14,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.14285714285714) internal successors, (1850), 14 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:14,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:14,463 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:14,463 INFO L175 Difference]: Start difference. First operand has 229 places, 314 transitions, 5361 flow. Second operand 14 states and 1850 transitions. [2022-12-13 11:35:14,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 734 transitions, 12309 flow [2022-12-13 11:35:46,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 734 transitions, 11737 flow, removed 181 selfloop flow, removed 5 redundant places. [2022-12-13 11:35:46,119 INFO L231 Difference]: Finished difference. Result has 247 places, 363 transitions, 6471 flow [2022-12-13 11:35:46,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=5068, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6471, PETRI_PLACES=247, PETRI_TRANSITIONS=363} [2022-12-13 11:35:46,120 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 176 predicate places. [2022-12-13 11:35:46,120 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 363 transitions, 6471 flow [2022-12-13 11:35:46,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:46,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:35:46,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:46,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 11:35:46,121 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:35:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:46,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2077329048, now seen corresponding path program 14 times [2022-12-13 11:35:46,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:46,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982851865] [2022-12-13 11:35:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:35:47,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:47,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982851865] [2022-12-13 11:35:47,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982851865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:35:47,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:35:47,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:35:47,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143466682] [2022-12-13 11:35:47,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:35:47,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:35:47,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:47,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:35:47,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:35:47,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:35:47,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 363 transitions, 6471 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:35:47,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:35:47,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:35:47,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:15,107 INFO L130 PetriNetUnfolder]: 67801/120255 cut-off events. [2022-12-13 11:36:15,107 INFO L131 PetriNetUnfolder]: For 2191482/2191482 co-relation queries the response was YES. [2022-12-13 11:36:16,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757696 conditions, 120255 events. 67801/120255 cut-off events. For 2191482/2191482 co-relation queries the response was YES. Maximal size of possible extension queue 5307. Compared 1244290 event pairs, 17283 based on Foata normal form. 1/120256 useless extension candidates. Maximal degree in co-relation 757596. Up to 35330 conditions per place. [2022-12-13 11:36:17,021 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 617 selfloop transitions, 147 changer transitions 17/785 dead transitions. [2022-12-13 11:36:17,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 785 transitions, 14339 flow [2022-12-13 11:36:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:36:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:36:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1830 transitions. [2022-12-13 11:36:17,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.460261569416499 [2022-12-13 11:36:17,023 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1830 transitions. [2022-12-13 11:36:17,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1830 transitions. [2022-12-13 11:36:17,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:17,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1830 transitions. [2022-12-13 11:36:17,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.71428571428572) internal successors, (1830), 14 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:17,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:17,027 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:36:17,028 INFO L175 Difference]: Start difference. First operand has 247 places, 363 transitions, 6471 flow. Second operand 14 states and 1830 transitions. [2022-12-13 11:36:17,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 785 transitions, 14339 flow [2022-12-13 11:37:01,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 785 transitions, 13788 flow, removed 249 selfloop flow, removed 4 redundant places. [2022-12-13 11:37:01,312 INFO L231 Difference]: Finished difference. Result has 263 places, 397 transitions, 7324 flow [2022-12-13 11:37:01,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=6170, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7324, PETRI_PLACES=263, PETRI_TRANSITIONS=397} [2022-12-13 11:37:01,312 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 192 predicate places. [2022-12-13 11:37:01,312 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 397 transitions, 7324 flow [2022-12-13 11:37:01,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:01,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:01,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:01,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 11:37:01,313 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:37:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash -465737802, now seen corresponding path program 15 times [2022-12-13 11:37:01,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:01,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250985033] [2022-12-13 11:37:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:02,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:02,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250985033] [2022-12-13 11:37:02,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250985033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:02,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:02,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:37:02,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678670870] [2022-12-13 11:37:02,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:02,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:37:02,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:37:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:37:02,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:37:02,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 397 transitions, 7324 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:02,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:02,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:37:02,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:32,815 INFO L130 PetriNetUnfolder]: 67988/120727 cut-off events. [2022-12-13 11:37:32,816 INFO L131 PetriNetUnfolder]: For 2494965/2494965 co-relation queries the response was YES. [2022-12-13 11:37:34,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783715 conditions, 120727 events. 67988/120727 cut-off events. For 2494965/2494965 co-relation queries the response was YES. Maximal size of possible extension queue 5388. Compared 1260127 event pairs, 17989 based on Foata normal form. 1/120728 useless extension candidates. Maximal degree in co-relation 783608. Up to 48585 conditions per place. [2022-12-13 11:37:34,884 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 640 selfloop transitions, 166 changer transitions 17/827 dead transitions. [2022-12-13 11:37:34,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 827 transitions, 15370 flow [2022-12-13 11:37:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:37:34,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:37:34,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1844 transitions. [2022-12-13 11:37:34,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46378269617706236 [2022-12-13 11:37:34,887 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1844 transitions. [2022-12-13 11:37:34,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1844 transitions. [2022-12-13 11:37:34,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:34,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1844 transitions. [2022-12-13 11:37:34,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.71428571428572) internal successors, (1844), 14 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:34,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:34,893 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:37:34,893 INFO L175 Difference]: Start difference. First operand has 263 places, 397 transitions, 7324 flow. Second operand 14 states and 1844 transitions. [2022-12-13 11:37:34,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 827 transitions, 15370 flow [2022-12-13 11:38:18,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 827 transitions, 14506 flow, removed 252 selfloop flow, removed 8 redundant places. [2022-12-13 11:38:18,087 INFO L231 Difference]: Finished difference. Result has 275 places, 444 transitions, 8384 flow [2022-12-13 11:38:18,087 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8384, PETRI_PLACES=275, PETRI_TRANSITIONS=444} [2022-12-13 11:38:18,087 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 204 predicate places. [2022-12-13 11:38:18,087 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 444 transitions, 8384 flow [2022-12-13 11:38:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:18,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:38:18,088 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:18,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 11:38:18,088 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:38:18,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:18,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1631080246, now seen corresponding path program 16 times [2022-12-13 11:38:18,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:18,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864129905] [2022-12-13 11:38:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:18,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:38:19,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:19,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864129905] [2022-12-13 11:38:19,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864129905] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:38:19,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:38:19,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:38:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849130448] [2022-12-13 11:38:19,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:38:19,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:38:19,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:38:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:38:19,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:38:19,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 444 transitions, 8384 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:19,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:38:19,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:38:19,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:38:50,899 INFO L130 PetriNetUnfolder]: 68455/122545 cut-off events. [2022-12-13 11:38:50,899 INFO L131 PetriNetUnfolder]: For 2609620/2609620 co-relation queries the response was YES. [2022-12-13 11:38:52,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809577 conditions, 122545 events. 68455/122545 cut-off events. For 2609620/2609620 co-relation queries the response was YES. Maximal size of possible extension queue 5485. Compared 1285657 event pairs, 17545 based on Foata normal form. 1/122546 useless extension candidates. Maximal degree in co-relation 809465. Up to 35330 conditions per place. [2022-12-13 11:38:53,092 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 660 selfloop transitions, 196 changer transitions 16/876 dead transitions. [2022-12-13 11:38:53,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 876 transitions, 17141 flow [2022-12-13 11:38:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:38:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:38:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1832 transitions. [2022-12-13 11:38:53,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4607645875251509 [2022-12-13 11:38:53,096 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1832 transitions. [2022-12-13 11:38:53,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1832 transitions. [2022-12-13 11:38:53,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:38:53,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1832 transitions. [2022-12-13 11:38:53,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.85714285714286) internal successors, (1832), 14 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:53,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:53,101 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:38:53,101 INFO L175 Difference]: Start difference. First operand has 275 places, 444 transitions, 8384 flow. Second operand 14 states and 1832 transitions. [2022-12-13 11:38:53,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 876 transitions, 17141 flow [2022-12-13 11:39:53,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 876 transitions, 16451 flow, removed 199 selfloop flow, removed 6 redundant places. [2022-12-13 11:39:53,836 INFO L231 Difference]: Finished difference. Result has 287 places, 477 transitions, 9302 flow [2022-12-13 11:39:53,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=7955, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9302, PETRI_PLACES=287, PETRI_TRANSITIONS=477} [2022-12-13 11:39:53,837 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 216 predicate places. [2022-12-13 11:39:53,837 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 477 transitions, 9302 flow [2022-12-13 11:39:53,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:39:53,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:39:53,837 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:39:53,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 11:39:53,838 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:39:53,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1541608616, now seen corresponding path program 17 times [2022-12-13 11:39:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:53,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857393069] [2022-12-13 11:39:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:53,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:39:54,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:39:54,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857393069] [2022-12-13 11:39:54,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857393069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:39:54,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:39:54,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:39:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84176135] [2022-12-13 11:39:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:39:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:39:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:39:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:39:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:39:55,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:39:55,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 477 transitions, 9302 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:39:55,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:39:55,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:39:55,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:40:29,253 INFO L130 PetriNetUnfolder]: 70341/126170 cut-off events. [2022-12-13 11:40:29,253 INFO L131 PetriNetUnfolder]: For 2931049/2931049 co-relation queries the response was YES. [2022-12-13 11:40:30,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849738 conditions, 126170 events. 70341/126170 cut-off events. For 2931049/2931049 co-relation queries the response was YES. Maximal size of possible extension queue 5815. Compared 1341054 event pairs, 18733 based on Foata normal form. 1/126171 useless extension candidates. Maximal degree in co-relation 849622. Up to 49432 conditions per place. [2022-12-13 11:40:31,405 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 622 selfloop transitions, 232 changer transitions 16/874 dead transitions. [2022-12-13 11:40:31,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 874 transitions, 16964 flow [2022-12-13 11:40:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:40:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:40:31,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1843 transitions. [2022-12-13 11:40:31,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46353118712273644 [2022-12-13 11:40:31,407 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1843 transitions. [2022-12-13 11:40:31,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1843 transitions. [2022-12-13 11:40:31,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:40:31,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1843 transitions. [2022-12-13 11:40:31,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 131.64285714285714) internal successors, (1843), 14 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:40:31,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:40:31,412 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:40:31,412 INFO L175 Difference]: Start difference. First operand has 287 places, 477 transitions, 9302 flow. Second operand 14 states and 1843 transitions. [2022-12-13 11:40:31,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 874 transitions, 16964 flow [2022-12-13 11:41:25,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 874 transitions, 16334 flow, removed 128 selfloop flow, removed 7 redundant places. [2022-12-13 11:41:25,464 INFO L231 Difference]: Finished difference. Result has 299 places, 522 transitions, 10549 flow [2022-12-13 11:41:25,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10549, PETRI_PLACES=299, PETRI_TRANSITIONS=522} [2022-12-13 11:41:25,464 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 228 predicate places. [2022-12-13 11:41:25,464 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 522 transitions, 10549 flow [2022-12-13 11:41:25,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:25,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:41:25,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:25,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 11:41:25,465 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-13 11:41:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash -694007542, now seen corresponding path program 18 times [2022-12-13 11:41:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:25,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567598239] [2022-12-13 11:41:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:26,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567598239] [2022-12-13 11:41:26,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567598239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:26,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:26,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 11:41:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075265426] [2022-12-13 11:41:26,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:26,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:41:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:26,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:41:26,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:41:26,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 284 [2022-12-13 11:41:26,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 522 transitions, 10549 flow. Second operand has 14 states, 14 states have (on average 117.64285714285714) internal successors, (1647), 14 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:26,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:41:26,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 284 [2022-12-13 11:41:26,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:42:04,711 INFO L130 PetriNetUnfolder]: 72881/134071 cut-off events. [2022-12-13 11:42:04,711 INFO L131 PetriNetUnfolder]: For 3200921/3200921 co-relation queries the response was YES. [2022-12-13 11:42:06,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916716 conditions, 134071 events. 72881/134071 cut-off events. For 3200921/3200921 co-relation queries the response was YES. Maximal size of possible extension queue 6390. Compared 1470073 event pairs, 19511 based on Foata normal form. 1/134072 useless extension candidates. Maximal degree in co-relation 916594. Up to 35330 conditions per place. [2022-12-13 11:42:07,376 INFO L137 encePairwiseOnDemand]: 271/284 looper letters, 638 selfloop transitions, 321 changer transitions 16/979 dead transitions. [2022-12-13 11:42:07,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 979 transitions, 20399 flow [2022-12-13 11:42:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:42:07,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:42:07,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1829 transitions. [2022-12-13 11:42:07,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.460010060362173 [2022-12-13 11:42:07,380 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1829 transitions. [2022-12-13 11:42:07,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1829 transitions. [2022-12-13 11:42:07,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:42:07,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1829 transitions. [2022-12-13 11:42:07,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.64285714285714) internal successors, (1829), 14 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:07,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:07,385 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 284.0) internal successors, (4260), 15 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:07,385 INFO L175 Difference]: Start difference. First operand has 299 places, 522 transitions, 10549 flow. Second operand 14 states and 1829 transitions. [2022-12-13 11:42:07,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 979 transitions, 20399 flow