./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:20:56,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:20:56,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:20:56,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:20:56,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:20:56,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:20:56,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:20:56,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:20:56,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:20:56,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:20:56,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:20:56,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:20:56,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:20:56,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:20:56,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:20:56,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:20:56,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:20:56,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:20:56,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:20:56,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:20:56,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:20:56,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:20:56,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:20:56,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:20:56,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:20:56,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:20:56,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:20:56,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:20:56,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:20:56,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:20:56,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:20:56,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:20:56,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:20:56,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:20:56,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:20:56,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:20:56,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:20:56,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:20:56,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:20:56,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:20:56,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:20:56,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:20:56,747 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:20:56,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:20:56,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:20:56,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:20:56,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:20:56,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:20:56,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:20:56,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:20:56,751 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:20:56,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:20:56,752 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:20:56,753 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:20:56,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:20:56,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:20:56,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:20:56,754 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:20:56,754 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:20:56,754 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:20:56,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:20:56,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:20:56,755 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:20:56,755 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:20:56,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:20:56,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:20:56,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:20:56,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:20:56,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:20:56,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:20:56,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:20:56,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:20:56,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:20:56,758 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:20:56,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:20:56,758 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_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-11-25 17:20:57,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:20:57,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:20:57,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:20:57,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:20:57,128 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:20:57,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-25 17:21:00,355 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:21:00,569 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:21:00,570 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-25 17:21:00,578 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/data/f5778b56e/932c434e1943452791694a3f190e2e57/FLAG58125b881 [2022-11-25 17:21:00,593 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/data/f5778b56e/932c434e1943452791694a3f190e2e57 [2022-11-25 17:21:00,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:21:00,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:21:00,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:00,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:21:00,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:21:00,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b2349de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00, skipping insertion in model container [2022-11-25 17:21:00,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:21:00,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:21:00,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,799 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,800 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,801 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,808 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,809 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,810 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,811 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,822 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_70c8113e-a5c9-481f-9b76-28f1cf208b5e/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-25 17:21:00,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:00,838 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:21:00,852 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,853 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,854 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,855 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,856 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,857 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,858 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,859 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,860 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,862 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,863 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,864 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:21:00,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:21:00,875 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-25 17:21:00,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:21:00,892 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:21:00,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00 WrapperNode [2022-11-25 17:21:00,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:21:00,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:00,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:21:00,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:21:00,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,947 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-25 17:21:00,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:21:00,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:21:00,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:21:00,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:21:00,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,974 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:21:00,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:21:00,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:21:00,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:21:00,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (1/1) ... [2022-11-25 17:21:00,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:21:01,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:21:01,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:21:01,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:21:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:21:01,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:21:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:21:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:21:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:21:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:21:01,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:21:01,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:21:01,077 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:21:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:21:01,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:21:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:21:01,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:21:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:21:01,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:21:01,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:21:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:21:01,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:21:01,083 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:21:01,238 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:21:01,241 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:21:01,670 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:21:01,774 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:21:01,775 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:21:01,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:01 BoogieIcfgContainer [2022-11-25 17:21:01,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:21:01,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:21:01,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:21:01,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:21:01,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:21:00" (1/3) ... [2022-11-25 17:21:01,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58705134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:21:01, skipping insertion in model container [2022-11-25 17:21:01,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:21:00" (2/3) ... [2022-11-25 17:21:01,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58705134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:21:01, skipping insertion in model container [2022-11-25 17:21:01,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:01" (3/3) ... [2022-11-25 17:21:01,788 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-11-25 17:21:01,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:21:01,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-25 17:21:01,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:21:01,956 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:21:02,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 162 transitions, 356 flow [2022-11-25 17:21:02,160 INFO L130 PetriNetUnfolder]: 2/158 cut-off events. [2022-11-25 17:21:02,160 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:21:02,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 158 events. 2/158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-11-25 17:21:02,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 162 transitions, 356 flow [2022-11-25 17:21:02,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 153 transitions, 330 flow [2022-11-25 17:21:02,179 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:21:02,210 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 153 transitions, 330 flow [2022-11-25 17:21:02,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 153 transitions, 330 flow [2022-11-25 17:21:02,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 153 transitions, 330 flow [2022-11-25 17:21:02,278 INFO L130 PetriNetUnfolder]: 2/153 cut-off events. [2022-11-25 17:21:02,285 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:21:02,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 153 events. 2/153 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-11-25 17:21:02,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 1702 [2022-11-25 17:21:11,252 INFO L134 LiptonReduction]: Checked pairs total: 4642 [2022-11-25 17:21:11,252 INFO L136 LiptonReduction]: Total number of compositions: 143 [2022-11-25 17:21:11,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:21:11,290 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;@1b1e80eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:21:11,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-25 17:21:11,300 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:21:11,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:21:11,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:11,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:21:11,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash 648, now seen corresponding path program 1 times [2022-11-25 17:21:11,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:11,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759983769] [2022-11-25 17:21:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:11,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:11,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:11,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759983769] [2022-11-25 17:21:11,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759983769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:11,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:11,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:21:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746246087] [2022-11-25 17:21:11,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:11,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:21:11,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:21:11,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:21:11,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 305 [2022-11-25 17:21:11,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:11,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:11,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 305 [2022-11-25 17:21:11,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:11,951 INFO L130 PetriNetUnfolder]: 1733/2532 cut-off events. [2022-11-25 17:21:11,951 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-11-25 17:21:11,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5216 conditions, 2532 events. 1733/2532 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10309 event pairs, 1733 based on Foata normal form. 0/2134 useless extension candidates. Maximal degree in co-relation 4304. Up to 2533 conditions per place. [2022-11-25 17:21:11,977 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 40 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2022-11-25 17:21:11,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 184 flow [2022-11-25 17:21:11,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:21:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:21:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 321 transitions. [2022-11-25 17:21:12,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5262295081967213 [2022-11-25 17:21:12,004 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 321 transitions. [2022-11-25 17:21:12,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 321 transitions. [2022-11-25 17:21:12,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:12,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 321 transitions. [2022-11-25 17:21:12,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 160.5) internal successors, (321), 2 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,029 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,031 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 110 flow. Second operand 2 states and 321 transitions. [2022-11-25 17:21:12,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 184 flow [2022-11-25 17:21:12,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 40 transitions, 168 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 17:21:12,041 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 88 flow [2022-11-25 17:21:12,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2022-11-25 17:21:12,048 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2022-11-25 17:21:12,049 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 88 flow [2022-11-25 17:21:12,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:12,050 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:21:12,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:21:12,051 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)] === [2022-11-25 17:21:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash 636868, now seen corresponding path program 1 times [2022-11-25 17:21:12,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:12,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198039214] [2022-11-25 17:21:12,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:12,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:12,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:12,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:12,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198039214] [2022-11-25 17:21:12,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198039214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:12,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:12,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:21:12,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274068870] [2022-11-25 17:21:12,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:12,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:12,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:12,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 305 [2022-11-25 17:21:12,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:12,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 305 [2022-11-25 17:21:12,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:12,877 INFO L130 PetriNetUnfolder]: 1676/2444 cut-off events. [2022-11-25 17:21:12,878 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:12,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 2444 events. 1676/2444 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9901 event pairs, 1676 based on Foata normal form. 0/2077 useless extension candidates. Maximal degree in co-relation 4941. Up to 2444 conditions per place. [2022-11-25 17:21:12,894 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-11-25 17:21:12,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 160 flow [2022-11-25 17:21:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-11-25 17:21:12,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4830601092896175 [2022-11-25 17:21:12,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-11-25 17:21:12,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-11-25 17:21:12,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:12,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-11-25 17:21:12,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,904 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 88 flow. Second operand 3 states and 442 transitions. [2022-11-25 17:21:12,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 160 flow [2022-11-25 17:21:12,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:21:12,906 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 86 flow [2022-11-25 17:21:12,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2022-11-25 17:21:12,908 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2022-11-25 17:21:12,908 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 86 flow [2022-11-25 17:21:12,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:12,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:12,909 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:21:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:21:12,909 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)] === [2022-11-25 17:21:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 636867, now seen corresponding path program 1 times [2022-11-25 17:21:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:12,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722190849] [2022-11-25 17:21:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:12,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:13,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:13,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722190849] [2022-11-25 17:21:13,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722190849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:13,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:13,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:21:13,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810633264] [2022-11-25 17:21:13,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:13,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:13,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:13,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:13,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:13,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:21:13,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 86 flow. Second operand has 3 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) [2022-11-25 17:21:13,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:13,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:21:13,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:13,478 INFO L130 PetriNetUnfolder]: 1619/2356 cut-off events. [2022-11-25 17:21:13,479 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:13,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 2356 events. 1619/2356 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9464 event pairs, 1619 based on Foata normal form. 0/2020 useless extension candidates. Maximal degree in co-relation 4766. Up to 2356 conditions per place. [2022-11-25 17:21:13,495 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-11-25 17:21:13,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 154 flow [2022-11-25 17:21:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-11-25 17:21:13,498 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46120218579234973 [2022-11-25 17:21:13,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-11-25 17:21:13,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-11-25 17:21:13,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:13,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-11-25 17:21:13,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,504 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 86 flow. Second operand 3 states and 422 transitions. [2022-11-25 17:21:13,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 154 flow [2022-11-25 17:21:13,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:13,505 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 83 flow [2022-11-25 17:21:13,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2022-11-25 17:21:13,507 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2022-11-25 17:21:13,507 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 83 flow [2022-11-25 17:21:13,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-25 17:21:13,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:13,508 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:21:13,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:21:13,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:13,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash 612043184, now seen corresponding path program 1 times [2022-11-25 17:21:13,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:13,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963631204] [2022-11-25 17:21:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:13,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:13,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:13,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963631204] [2022-11-25 17:21:13,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963631204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:13,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:13,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:21:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783569271] [2022-11-25 17:21:13,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:13,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:13,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:13,671 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:21:13,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:13,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:21:13,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:13,938 INFO L130 PetriNetUnfolder]: 1590/2306 cut-off events. [2022-11-25 17:21:13,939 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:13,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 2306 events. 1590/2306 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9231 event pairs, 1590 based on Foata normal form. 0/1991 useless extension candidates. Maximal degree in co-relation 4667. Up to 2306 conditions per place. [2022-11-25 17:21:13,954 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-11-25 17:21:13,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 147 flow [2022-11-25 17:21:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:13,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2022-11-25 17:21:13,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2022-11-25 17:21:13,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2022-11-25 17:21:13,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2022-11-25 17:21:13,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:13,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2022-11-25 17:21:13,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,961 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 83 flow. Second operand 3 states and 420 transitions. [2022-11-25 17:21:13,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 147 flow [2022-11-25 17:21:13,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:13,963 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 80 flow [2022-11-25 17:21:13,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2022-11-25 17:21:13,964 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2022-11-25 17:21:13,964 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 80 flow [2022-11-25 17:21:13,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:13,965 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:13,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:21:13,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:21:13,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 612043183, now seen corresponding path program 1 times [2022-11-25 17:21:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:13,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058338481] [2022-11-25 17:21:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:14,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:14,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058338481] [2022-11-25 17:21:14,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058338481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:14,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:14,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:21:14,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424578393] [2022-11-25 17:21:14,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:14,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:14,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:14,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:14,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:14,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 305 [2022-11-25 17:21:14,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:14,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 305 [2022-11-25 17:21:14,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:14,382 INFO L130 PetriNetUnfolder]: 1561/2256 cut-off events. [2022-11-25 17:21:14,382 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:14,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4572 conditions, 2256 events. 1561/2256 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8991 event pairs, 1561 based on Foata normal form. 0/1962 useless extension candidates. Maximal degree in co-relation 4568. Up to 2256 conditions per place. [2022-11-25 17:21:14,395 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-11-25 17:21:14,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 140 flow [2022-11-25 17:21:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2022-11-25 17:21:14,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47650273224043715 [2022-11-25 17:21:14,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2022-11-25 17:21:14,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2022-11-25 17:21:14,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:14,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2022-11-25 17:21:14,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,407 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 80 flow. Second operand 3 states and 436 transitions. [2022-11-25 17:21:14,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 140 flow [2022-11-25 17:21:14,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 139 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:14,412 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 77 flow [2022-11-25 17:21:14,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2022-11-25 17:21:14,416 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -13 predicate places. [2022-11-25 17:21:14,416 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 77 flow [2022-11-25 17:21:14,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,417 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:14,417 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:14,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:21:14,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:14,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:14,418 INFO L85 PathProgramCache]: Analyzing trace with hash -237003612, now seen corresponding path program 1 times [2022-11-25 17:21:14,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:14,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457145198] [2022-11-25 17:21:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:14,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:14,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:14,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457145198] [2022-11-25 17:21:14,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457145198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:14,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:14,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:21:14,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949707810] [2022-11-25 17:21:14,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:14,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:14,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:14,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:14,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:14,583 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 305 [2022-11-25 17:21:14,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:14,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 305 [2022-11-25 17:21:14,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:14,806 INFO L130 PetriNetUnfolder]: 1484/2140 cut-off events. [2022-11-25 17:21:14,806 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:14,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4341 conditions, 2140 events. 1484/2140 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8406 event pairs, 1484 based on Foata normal form. 0/1885 useless extension candidates. Maximal degree in co-relation 4337. Up to 2140 conditions per place. [2022-11-25 17:21:14,818 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2022-11-25 17:21:14,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 30 transitions, 133 flow [2022-11-25 17:21:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2022-11-25 17:21:14,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45792349726775955 [2022-11-25 17:21:14,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2022-11-25 17:21:14,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2022-11-25 17:21:14,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:14,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2022-11-25 17:21:14,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-25 17:21:14,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,825 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,825 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 77 flow. Second operand 3 states and 419 transitions. [2022-11-25 17:21:14,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 30 transitions, 133 flow [2022-11-25 17:21:14,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:14,826 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 74 flow [2022-11-25 17:21:14,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2022-11-25 17:21:14,827 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -14 predicate places. [2022-11-25 17:21:14,827 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 74 flow [2022-11-25 17:21:14,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:14,828 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:14,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:21:14,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:14,829 INFO L85 PathProgramCache]: Analyzing trace with hash -237003613, now seen corresponding path program 1 times [2022-11-25 17:21:14,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:14,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188940607] [2022-11-25 17:21:14,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:14,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:14,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188940607] [2022-11-25 17:21:14,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188940607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:14,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:14,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:21:14,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152085593] [2022-11-25 17:21:14,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:14,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:14,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:14,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:21:14,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:14,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:14,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:21:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:15,161 INFO L130 PetriNetUnfolder]: 1407/2024 cut-off events. [2022-11-25 17:21:15,162 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:15,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 2024 events. 1407/2024 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7840 event pairs, 1407 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 4106. Up to 2024 conditions per place. [2022-11-25 17:21:15,175 INFO L137 encePairwiseOnDemand]: 302/305 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-11-25 17:21:15,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 126 flow [2022-11-25 17:21:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:15,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:15,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2022-11-25 17:21:15,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4524590163934426 [2022-11-25 17:21:15,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2022-11-25 17:21:15,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2022-11-25 17:21:15,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:15,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2022-11-25 17:21:15,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,182 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 74 flow. Second operand 3 states and 414 transitions. [2022-11-25 17:21:15,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 126 flow [2022-11-25 17:21:15,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 28 transitions, 125 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:15,183 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 71 flow [2022-11-25 17:21:15,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2022-11-25 17:21:15,184 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -15 predicate places. [2022-11-25 17:21:15,184 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 71 flow [2022-11-25 17:21:15,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:15,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:15,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:21:15,185 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)] === [2022-11-25 17:21:15,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash -127188497, now seen corresponding path program 1 times [2022-11-25 17:21:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:15,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449882399] [2022-11-25 17:21:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:15,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:15,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:15,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449882399] [2022-11-25 17:21:15,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449882399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:15,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:15,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:21:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152326980] [2022-11-25 17:21:15,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:15,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:21:15,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:21:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:21:15,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 305 [2022-11-25 17:21:15,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:15,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 305 [2022-11-25 17:21:15,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:15,735 INFO L130 PetriNetUnfolder]: 1110/1619 cut-off events. [2022-11-25 17:21:15,736 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:15,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1619 events. 1110/1619 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6021 event pairs, 1110 based on Foata normal form. 0/1511 useless extension candidates. Maximal degree in co-relation 3297. Up to 1619 conditions per place. [2022-11-25 17:21:15,753 INFO L137 encePairwiseOnDemand]: 303/305 looper letters, 26 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2022-11-25 17:21:15,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 123 flow [2022-11-25 17:21:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2022-11-25 17:21:15,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41092896174863386 [2022-11-25 17:21:15,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2022-11-25 17:21:15,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2022-11-25 17:21:15,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:15,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2022-11-25 17:21:15,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,759 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,760 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 71 flow. Second operand 3 states and 376 transitions. [2022-11-25 17:21:15,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 123 flow [2022-11-25 17:21:15,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 27 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:15,762 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 70 flow [2022-11-25 17:21:15,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2022-11-25 17:21:15,764 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -15 predicate places. [2022-11-25 17:21:15,765 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 70 flow [2022-11-25 17:21:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:15,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:15,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:21:15,766 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)] === [2022-11-25 17:21:15,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash -127188495, now seen corresponding path program 1 times [2022-11-25 17:21:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:15,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067132441] [2022-11-25 17:21:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:15,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:15,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067132441] [2022-11-25 17:21:15,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067132441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:15,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:15,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:21:15,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656524728] [2022-11-25 17:21:15,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:15,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:21:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:15,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:21:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:21:15,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 305 [2022-11-25 17:21:15,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:15,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:15,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 305 [2022-11-25 17:21:15,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:16,092 INFO L130 PetriNetUnfolder]: 813/1214 cut-off events. [2022-11-25 17:21:16,093 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 17:21:16,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 1214 events. 813/1214 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4312 event pairs, 813 based on Foata normal form. 0/1214 useless extension candidates. Maximal degree in co-relation 2488. Up to 1214 conditions per place. [2022-11-25 17:21:16,099 INFO L137 encePairwiseOnDemand]: 303/305 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2022-11-25 17:21:16,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 120 flow [2022-11-25 17:21:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:21:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:21:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2022-11-25 17:21:16,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4524590163934426 [2022-11-25 17:21:16,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2022-11-25 17:21:16,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2022-11-25 17:21:16,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:16,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2022-11-25 17:21:16,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:16,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:16,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:16,105 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 70 flow. Second operand 3 states and 414 transitions. [2022-11-25 17:21:16,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 120 flow [2022-11-25 17:21:16,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 26 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:16,106 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 69 flow [2022-11-25 17:21:16,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2022-11-25 17:21:16,107 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -15 predicate places. [2022-11-25 17:21:16,107 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 69 flow [2022-11-25 17:21:16,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:16,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:16,108 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] [2022-11-25 17:21:16,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:21:16,109 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)] === [2022-11-25 17:21:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1719127048, now seen corresponding path program 1 times [2022-11-25 17:21:16,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:16,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251602563] [2022-11-25 17:21:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:16,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:16,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251602563] [2022-11-25 17:21:16,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251602563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:16,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:16,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:21:16,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099643720] [2022-11-25 17:21:16,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:16,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:21:16,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:16,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:21:16,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:21:16,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 305 [2022-11-25 17:21:16,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 69 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:16,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:16,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 305 [2022-11-25 17:21:16,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:17,203 INFO L130 PetriNetUnfolder]: 1049/1613 cut-off events. [2022-11-25 17:21:17,203 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-25 17:21:17,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3303 conditions, 1613 events. 1049/1613 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6790 event pairs, 235 based on Foata normal form. 1/1614 useless extension candidates. Maximal degree in co-relation 3299. Up to 674 conditions per place. [2022-11-25 17:21:17,211 INFO L137 encePairwiseOnDemand]: 298/305 looper letters, 62 selfloop transitions, 12 changer transitions 11/85 dead transitions. [2022-11-25 17:21:17,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 85 transitions, 371 flow [2022-11-25 17:21:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:21:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:21:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 866 transitions. [2022-11-25 17:21:17,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.473224043715847 [2022-11-25 17:21:17,214 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 866 transitions. [2022-11-25 17:21:17,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 866 transitions. [2022-11-25 17:21:17,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:17,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 866 transitions. [2022-11-25 17:21:17,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.33333333333334) internal successors, (866), 6 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:17,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:17,221 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 305.0) internal successors, (2135), 7 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:17,221 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 69 flow. Second operand 6 states and 866 transitions. [2022-11-25 17:21:17,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 85 transitions, 371 flow [2022-11-25 17:21:17,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:17,223 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 148 flow [2022-11-25 17:21:17,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2022-11-25 17:21:17,224 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2022-11-25 17:21:17,224 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 148 flow [2022-11-25 17:21:17,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:17,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:17,225 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] [2022-11-25 17:21:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:21:17,225 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)] === [2022-11-25 17:21:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1950349244, now seen corresponding path program 2 times [2022-11-25 17:21:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:17,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254195924] [2022-11-25 17:21:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:17,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:17,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254195924] [2022-11-25 17:21:17,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254195924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:17,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:17,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:21:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813854572] [2022-11-25 17:21:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:17,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:21:17,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:17,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:21:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:21:17,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:17,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:17,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:17,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:17,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:17,851 INFO L130 PetriNetUnfolder]: 816/1265 cut-off events. [2022-11-25 17:21:17,852 INFO L131 PetriNetUnfolder]: For 581/581 co-relation queries the response was YES. [2022-11-25 17:21:17,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3303 conditions, 1265 events. 816/1265 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5128 event pairs, 172 based on Foata normal form. 28/1293 useless extension candidates. Maximal degree in co-relation 3296. Up to 1107 conditions per place. [2022-11-25 17:21:17,860 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 61 selfloop transitions, 14 changer transitions 0/75 dead transitions. [2022-11-25 17:21:17,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 407 flow [2022-11-25 17:21:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:21:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:21:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2022-11-25 17:21:17,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47147540983606556 [2022-11-25 17:21:17,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2022-11-25 17:21:17,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2022-11-25 17:21:17,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:17,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2022-11-25 17:21:17,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:17,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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) [2022-11-25 17:21:17,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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) [2022-11-25 17:21:17,868 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 148 flow. Second operand 5 states and 719 transitions. [2022-11-25 17:21:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 407 flow [2022-11-25 17:21:17,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 397 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:17,875 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 246 flow [2022-11-25 17:21:17,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2022-11-25 17:21:17,876 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2022-11-25 17:21:17,876 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 246 flow [2022-11-25 17:21:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.33333333333334) internal successors, (818), 6 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:17,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:17,877 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] [2022-11-25 17:21:17,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:21:17,877 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)] === [2022-11-25 17:21:17,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -285291970, now seen corresponding path program 3 times [2022-11-25 17:21:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:17,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29451360] [2022-11-25 17:21:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:18,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29451360] [2022-11-25 17:21:18,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29451360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:18,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:18,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:21:18,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572544839] [2022-11-25 17:21:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:18,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:21:18,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:21:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:21:18,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:18,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:18,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:18,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:18,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:18,583 INFO L130 PetriNetUnfolder]: 841/1314 cut-off events. [2022-11-25 17:21:18,583 INFO L131 PetriNetUnfolder]: For 1067/1067 co-relation queries the response was YES. [2022-11-25 17:21:18,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4004 conditions, 1314 events. 841/1314 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5550 event pairs, 80 based on Foata normal form. 48/1362 useless extension candidates. Maximal degree in co-relation 3995. Up to 946 conditions per place. [2022-11-25 17:21:18,593 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 68 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2022-11-25 17:21:18,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 93 transitions, 573 flow [2022-11-25 17:21:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:21:18,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:21:18,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 995 transitions. [2022-11-25 17:21:18,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2022-11-25 17:21:18,596 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 995 transitions. [2022-11-25 17:21:18,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 995 transitions. [2022-11-25 17:21:18,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:18,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 995 transitions. [2022-11-25 17:21:18,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 142.14285714285714) internal successors, (995), 7 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:18,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:18,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:18,604 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 246 flow. Second operand 7 states and 995 transitions. [2022-11-25 17:21:18,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 93 transitions, 573 flow [2022-11-25 17:21:18,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 573 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:21:18,613 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 332 flow [2022-11-25 17:21:18,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2022-11-25 17:21:18,614 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2022-11-25 17:21:18,614 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 332 flow [2022-11-25 17:21:18,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:18,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:18,615 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] [2022-11-25 17:21:18,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:21:18,615 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)] === [2022-11-25 17:21:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash 777760474, now seen corresponding path program 4 times [2022-11-25 17:21:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:18,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4629781] [2022-11-25 17:21:18,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:18,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:18,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:18,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4629781] [2022-11-25 17:21:18,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4629781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:18,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:18,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541195572] [2022-11-25 17:21:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:18,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:19,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:19,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:19,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:19,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:19,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:19,487 INFO L130 PetriNetUnfolder]: 885/1390 cut-off events. [2022-11-25 17:21:19,488 INFO L131 PetriNetUnfolder]: For 1765/1765 co-relation queries the response was YES. [2022-11-25 17:21:19,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 1390 events. 885/1390 cut-off events. For 1765/1765 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5957 event pairs, 128 based on Foata normal form. 32/1422 useless extension candidates. Maximal degree in co-relation 4570. Up to 972 conditions per place. [2022-11-25 17:21:19,498 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 67 selfloop transitions, 38 changer transitions 11/116 dead transitions. [2022-11-25 17:21:19,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 116 transitions, 802 flow [2022-11-25 17:21:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:21:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:21:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1282 transitions. [2022-11-25 17:21:19,502 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46703096539162114 [2022-11-25 17:21:19,502 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1282 transitions. [2022-11-25 17:21:19,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1282 transitions. [2022-11-25 17:21:19,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:19,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1282 transitions. [2022-11-25 17:21:19,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.44444444444446) internal successors, (1282), 9 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:19,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:19,511 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:19,512 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 332 flow. Second operand 9 states and 1282 transitions. [2022-11-25 17:21:19,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 116 transitions, 802 flow [2022-11-25 17:21:19,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 116 transitions, 772 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-11-25 17:21:19,524 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 505 flow [2022-11-25 17:21:19,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=505, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2022-11-25 17:21:19,525 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2022-11-25 17:21:19,525 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 505 flow [2022-11-25 17:21:19,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:19,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:19,526 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] [2022-11-25 17:21:19,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:21:19,527 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)] === [2022-11-25 17:21:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2107651802, now seen corresponding path program 5 times [2022-11-25 17:21:19,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:19,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580749291] [2022-11-25 17:21:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:19,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:20,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:20,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580749291] [2022-11-25 17:21:20,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580749291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:20,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:20,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143154463] [2022-11-25 17:21:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:20,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:20,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:20,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 305 [2022-11-25 17:21:20,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 505 flow. Second operand has 7 states, 7 states have (on average 130.71428571428572) internal successors, (915), 7 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:20,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:20,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 305 [2022-11-25 17:21:20,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:20,852 INFO L130 PetriNetUnfolder]: 813/1290 cut-off events. [2022-11-25 17:21:20,852 INFO L131 PetriNetUnfolder]: For 2096/2096 co-relation queries the response was YES. [2022-11-25 17:21:20,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 1290 events. 813/1290 cut-off events. For 2096/2096 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5488 event pairs, 126 based on Foata normal form. 40/1330 useless extension candidates. Maximal degree in co-relation 4694. Up to 956 conditions per place. [2022-11-25 17:21:20,862 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 53 selfloop transitions, 31 changer transitions 14/98 dead transitions. [2022-11-25 17:21:20,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 98 transitions, 764 flow [2022-11-25 17:21:20,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:21:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:21:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 959 transitions. [2022-11-25 17:21:20,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4491803278688525 [2022-11-25 17:21:20,866 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 959 transitions. [2022-11-25 17:21:20,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 959 transitions. [2022-11-25 17:21:20,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:20,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 959 transitions. [2022-11-25 17:21:20,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:20,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:20,874 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 305.0) internal successors, (2440), 8 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:20,874 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 505 flow. Second operand 7 states and 959 transitions. [2022-11-25 17:21:20,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 98 transitions, 764 flow [2022-11-25 17:21:20,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 745 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:20,884 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 492 flow [2022-11-25 17:21:20,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2022-11-25 17:21:20,885 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2022-11-25 17:21:20,885 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 492 flow [2022-11-25 17:21:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.71428571428572) internal successors, (915), 7 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:20,886 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:20,886 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] [2022-11-25 17:21:20,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:21:20,887 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)] === [2022-11-25 17:21:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:20,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1448458432, now seen corresponding path program 6 times [2022-11-25 17:21:20,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:20,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452858641] [2022-11-25 17:21:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:20,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:21,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:21,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452858641] [2022-11-25 17:21:21,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452858641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:21,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:21,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086402348] [2022-11-25 17:21:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:21,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:21,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:21,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:21,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 492 flow. Second operand has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:21,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:21,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:21,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:21,657 INFO L130 PetriNetUnfolder]: 884/1393 cut-off events. [2022-11-25 17:21:21,657 INFO L131 PetriNetUnfolder]: For 2481/2481 co-relation queries the response was YES. [2022-11-25 17:21:21,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5174 conditions, 1393 events. 884/1393 cut-off events. For 2481/2481 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6047 event pairs, 164 based on Foata normal form. 20/1413 useless extension candidates. Maximal degree in co-relation 5161. Up to 961 conditions per place. [2022-11-25 17:21:21,668 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 77 selfloop transitions, 55 changer transitions 0/132 dead transitions. [2022-11-25 17:21:21,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 132 transitions, 1075 flow [2022-11-25 17:21:21,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1133 transitions. [2022-11-25 17:21:21,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46434426229508197 [2022-11-25 17:21:21,672 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1133 transitions. [2022-11-25 17:21:21,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1133 transitions. [2022-11-25 17:21:21,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:21,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1133 transitions. [2022-11-25 17:21:21,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.625) internal successors, (1133), 8 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:21,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:21,680 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:21,680 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 492 flow. Second operand 8 states and 1133 transitions. [2022-11-25 17:21:21,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 132 transitions, 1075 flow [2022-11-25 17:21:21,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 132 transitions, 1037 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:21:21,692 INFO L231 Difference]: Finished difference. Result has 71 places, 91 transitions, 814 flow [2022-11-25 17:21:21,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=71, PETRI_TRANSITIONS=91} [2022-11-25 17:21:21,694 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2022-11-25 17:21:21,694 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 91 transitions, 814 flow [2022-11-25 17:21:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:21,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:21,695 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] [2022-11-25 17:21:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:21:21,695 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)] === [2022-11-25 17:21:21,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1768319294, now seen corresponding path program 7 times [2022-11-25 17:21:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:21,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617174704] [2022-11-25 17:21:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:21,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:21,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617174704] [2022-11-25 17:21:21,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617174704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:21,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:21,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:21,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874357] [2022-11-25 17:21:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:21,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:21,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:22,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:22,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 91 transitions, 814 flow. Second operand has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:22,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:22,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:22,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:22,476 INFO L130 PetriNetUnfolder]: 902/1431 cut-off events. [2022-11-25 17:21:22,476 INFO L131 PetriNetUnfolder]: For 4006/4006 co-relation queries the response was YES. [2022-11-25 17:21:22,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6047 conditions, 1431 events. 902/1431 cut-off events. For 4006/4006 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6353 event pairs, 206 based on Foata normal form. 20/1451 useless extension candidates. Maximal degree in co-relation 6031. Up to 975 conditions per place. [2022-11-25 17:21:22,490 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 73 selfloop transitions, 59 changer transitions 1/133 dead transitions. [2022-11-25 17:21:22,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 133 transitions, 1267 flow [2022-11-25 17:21:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:22,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1129 transitions. [2022-11-25 17:21:22,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4627049180327869 [2022-11-25 17:21:22,495 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1129 transitions. [2022-11-25 17:21:22,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1129 transitions. [2022-11-25 17:21:22,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:22,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1129 transitions. [2022-11-25 17:21:22,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.125) internal successors, (1129), 8 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:22,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:22,515 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:22,523 INFO L175 Difference]: Start difference. First operand has 71 places, 91 transitions, 814 flow. Second operand 8 states and 1129 transitions. [2022-11-25 17:21:22,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 133 transitions, 1267 flow [2022-11-25 17:21:22,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 133 transitions, 1261 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:21:22,543 INFO L231 Difference]: Finished difference. Result has 78 places, 97 transitions, 1009 flow [2022-11-25 17:21:22,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1009, PETRI_PLACES=78, PETRI_TRANSITIONS=97} [2022-11-25 17:21:22,544 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2022-11-25 17:21:22,544 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 97 transitions, 1009 flow [2022-11-25 17:21:22,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:22,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:22,546 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] [2022-11-25 17:21:22,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:21:22,546 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)] === [2022-11-25 17:21:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:22,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1915463888, now seen corresponding path program 8 times [2022-11-25 17:21:22,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:22,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974289126] [2022-11-25 17:21:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:22,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:22,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:22,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974289126] [2022-11-25 17:21:22,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974289126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:22,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:22,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:21:22,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473892650] [2022-11-25 17:21:22,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:21:22,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:21:22,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:21:22,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 305 [2022-11-25 17:21:22,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 97 transitions, 1009 flow. Second operand has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:22,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:22,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 305 [2022-11-25 17:21:22,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:23,128 INFO L130 PetriNetUnfolder]: 538/877 cut-off events. [2022-11-25 17:21:23,129 INFO L131 PetriNetUnfolder]: For 2806/2806 co-relation queries the response was YES. [2022-11-25 17:21:23,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4004 conditions, 877 events. 538/877 cut-off events. For 2806/2806 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3570 event pairs, 94 based on Foata normal form. 42/919 useless extension candidates. Maximal degree in co-relation 3986. Up to 709 conditions per place. [2022-11-25 17:21:23,137 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 71 selfloop transitions, 37 changer transitions 0/108 dead transitions. [2022-11-25 17:21:23,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 108 transitions, 1187 flow [2022-11-25 17:21:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:21:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:21:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2022-11-25 17:21:23,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47737704918032786 [2022-11-25 17:21:23,140 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2022-11-25 17:21:23,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2022-11-25 17:21:23,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:23,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2022-11-25 17:21:23,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:23,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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) [2022-11-25 17:21:23,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 305.0) internal successors, (1830), 6 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) [2022-11-25 17:21:23,145 INFO L175 Difference]: Start difference. First operand has 78 places, 97 transitions, 1009 flow. Second operand 5 states and 728 transitions. [2022-11-25 17:21:23,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 108 transitions, 1187 flow [2022-11-25 17:21:23,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 108 transitions, 1115 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 17:21:23,161 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 906 flow [2022-11-25 17:21:23,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=906, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2022-11-25 17:21:23,162 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2022-11-25 17:21:23,162 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 906 flow [2022-11-25 17:21:23,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:23,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:23,163 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] [2022-11-25 17:21:23,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:21:23,164 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)] === [2022-11-25 17:21:23,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1291695234, now seen corresponding path program 9 times [2022-11-25 17:21:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:23,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517841479] [2022-11-25 17:21:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:23,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:23,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517841479] [2022-11-25 17:21:23,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517841479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:23,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:23,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:23,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189901355] [2022-11-25 17:21:23,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:23,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:23,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:23,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:23,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 906 flow. Second operand has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:23,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:23,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:23,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:23,819 INFO L130 PetriNetUnfolder]: 558/923 cut-off events. [2022-11-25 17:21:23,820 INFO L131 PetriNetUnfolder]: For 3151/3151 co-relation queries the response was YES. [2022-11-25 17:21:23,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 923 events. 558/923 cut-off events. For 3151/3151 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3927 event pairs, 92 based on Foata normal form. 18/941 useless extension candidates. Maximal degree in co-relation 4358. Up to 806 conditions per place. [2022-11-25 17:21:23,829 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 96 selfloop transitions, 24 changer transitions 4/124 dead transitions. [2022-11-25 17:21:23,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 1347 flow [2022-11-25 17:21:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1120 transitions. [2022-11-25 17:21:23,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2022-11-25 17:21:23,833 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1120 transitions. [2022-11-25 17:21:23,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1120 transitions. [2022-11-25 17:21:23,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:23,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1120 transitions. [2022-11-25 17:21:23,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:23,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:23,839 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:23,840 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 906 flow. Second operand 8 states and 1120 transitions. [2022-11-25 17:21:23,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 1347 flow [2022-11-25 17:21:23,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 124 transitions, 1309 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:21:23,852 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 1014 flow [2022-11-25 17:21:23,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1014, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2022-11-25 17:21:23,853 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2022-11-25 17:21:23,854 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 1014 flow [2022-11-25 17:21:23,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:23,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:23,854 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] [2022-11-25 17:21:23,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:21:23,855 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)] === [2022-11-25 17:21:23,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1653702592, now seen corresponding path program 10 times [2022-11-25 17:21:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:23,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706143762] [2022-11-25 17:21:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:24,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:24,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706143762] [2022-11-25 17:21:24,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706143762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:24,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:24,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:24,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873859753] [2022-11-25 17:21:24,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:24,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:24,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:24,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:24,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:21:24,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 1014 flow. Second operand has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:24,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:24,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:21:24,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:24,601 INFO L130 PetriNetUnfolder]: 553/912 cut-off events. [2022-11-25 17:21:24,602 INFO L131 PetriNetUnfolder]: For 3457/3457 co-relation queries the response was YES. [2022-11-25 17:21:24,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4401 conditions, 912 events. 553/912 cut-off events. For 3457/3457 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3836 event pairs, 128 based on Foata normal form. 4/916 useless extension candidates. Maximal degree in co-relation 4380. Up to 808 conditions per place. [2022-11-25 17:21:24,611 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 98 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2022-11-25 17:21:24,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 123 transitions, 1399 flow [2022-11-25 17:21:24,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1093 transitions. [2022-11-25 17:21:24,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44795081967213113 [2022-11-25 17:21:24,614 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1093 transitions. [2022-11-25 17:21:24,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1093 transitions. [2022-11-25 17:21:24,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:24,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1093 transitions. [2022-11-25 17:21:24,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.625) internal successors, (1093), 8 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:24,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:24,622 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:24,622 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 1014 flow. Second operand 8 states and 1093 transitions. [2022-11-25 17:21:24,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 123 transitions, 1399 flow [2022-11-25 17:21:24,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 1348 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-25 17:21:24,641 INFO L231 Difference]: Finished difference. Result has 88 places, 96 transitions, 1070 flow [2022-11-25 17:21:24,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1070, PETRI_PLACES=88, PETRI_TRANSITIONS=96} [2022-11-25 17:21:24,642 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2022-11-25 17:21:24,642 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 96 transitions, 1070 flow [2022-11-25 17:21:24,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:24,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:24,642 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] [2022-11-25 17:21:24,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:21:24,643 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)] === [2022-11-25 17:21:24,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1816502980, now seen corresponding path program 11 times [2022-11-25 17:21:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:24,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684734691] [2022-11-25 17:21:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:24,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:24,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684734691] [2022-11-25 17:21:24,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684734691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:24,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:24,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749553687] [2022-11-25 17:21:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:24,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:24,921 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:24,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 96 transitions, 1070 flow. Second operand has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:24,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:24,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:24,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:25,412 INFO L130 PetriNetUnfolder]: 901/1516 cut-off events. [2022-11-25 17:21:25,413 INFO L131 PetriNetUnfolder]: For 4752/4752 co-relation queries the response was YES. [2022-11-25 17:21:25,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1516 events. 901/1516 cut-off events. For 4752/4752 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7638 event pairs, 46 based on Foata normal form. 28/1544 useless extension candidates. Maximal degree in co-relation 6740. Up to 492 conditions per place. [2022-11-25 17:21:25,431 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 82 selfloop transitions, 93 changer transitions 3/178 dead transitions. [2022-11-25 17:21:25,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 178 transitions, 1905 flow [2022-11-25 17:21:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1139 transitions. [2022-11-25 17:21:25,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4668032786885246 [2022-11-25 17:21:25,439 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1139 transitions. [2022-11-25 17:21:25,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1139 transitions. [2022-11-25 17:21:25,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:25,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1139 transitions. [2022-11-25 17:21:25,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,450 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,450 INFO L175 Difference]: Start difference. First operand has 88 places, 96 transitions, 1070 flow. Second operand 8 states and 1139 transitions. [2022-11-25 17:21:25,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 178 transitions, 1905 flow [2022-11-25 17:21:25,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 178 transitions, 1857 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-25 17:21:25,486 INFO L231 Difference]: Finished difference. Result has 92 places, 132 transitions, 1600 flow [2022-11-25 17:21:25,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1600, PETRI_PLACES=92, PETRI_TRANSITIONS=132} [2022-11-25 17:21:25,487 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2022-11-25 17:21:25,487 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 132 transitions, 1600 flow [2022-11-25 17:21:25,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:25,488 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] [2022-11-25 17:21:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:21:25,488 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)] === [2022-11-25 17:21:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1607738662, now seen corresponding path program 12 times [2022-11-25 17:21:25,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:25,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937722] [2022-11-25 17:21:25,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:25,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:25,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:25,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937722] [2022-11-25 17:21:25,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:25,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:25,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:25,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789435367] [2022-11-25 17:21:25,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:25,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:25,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:21:25,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 132 transitions, 1600 flow. Second operand has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:25,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:25,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:21:25,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:26,393 INFO L130 PetriNetUnfolder]: 883/1514 cut-off events. [2022-11-25 17:21:26,394 INFO L131 PetriNetUnfolder]: For 6657/6657 co-relation queries the response was YES. [2022-11-25 17:21:26,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7845 conditions, 1514 events. 883/1514 cut-off events. For 6657/6657 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7877 event pairs, 82 based on Foata normal form. 26/1540 useless extension candidates. Maximal degree in co-relation 7822. Up to 1390 conditions per place. [2022-11-25 17:21:26,413 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 131 selfloop transitions, 21 changer transitions 10/162 dead transitions. [2022-11-25 17:21:26,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 162 transitions, 2114 flow [2022-11-25 17:21:26,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1090 transitions. [2022-11-25 17:21:26,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44672131147540983 [2022-11-25 17:21:26,419 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1090 transitions. [2022-11-25 17:21:26,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1090 transitions. [2022-11-25 17:21:26,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:26,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1090 transitions. [2022-11-25 17:21:26,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.25) internal successors, (1090), 8 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,427 INFO L175 Difference]: Start difference. First operand has 92 places, 132 transitions, 1600 flow. Second operand 8 states and 1090 transitions. [2022-11-25 17:21:26,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 162 transitions, 2114 flow [2022-11-25 17:21:26,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 162 transitions, 2032 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-11-25 17:21:26,474 INFO L231 Difference]: Finished difference. Result has 97 places, 131 transitions, 1583 flow [2022-11-25 17:21:26,474 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1583, PETRI_PLACES=97, PETRI_TRANSITIONS=131} [2022-11-25 17:21:26,475 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2022-11-25 17:21:26,475 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 131 transitions, 1583 flow [2022-11-25 17:21:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 131.71428571428572) internal successors, (922), 7 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:26,476 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] [2022-11-25 17:21:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 17:21:26,476 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)] === [2022-11-25 17:21:26,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1026526108, now seen corresponding path program 13 times [2022-11-25 17:21:26,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:26,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599038944] [2022-11-25 17:21:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:26,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:26,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599038944] [2022-11-25 17:21:26,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599038944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:26,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:26,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:21:26,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991948459] [2022-11-25 17:21:26,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:26,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:21:26,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:21:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:21:26,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:26,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 131 transitions, 1583 flow. Second operand has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:26,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:26,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:26,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:27,417 INFO L130 PetriNetUnfolder]: 888/1519 cut-off events. [2022-11-25 17:21:27,417 INFO L131 PetriNetUnfolder]: For 6101/6101 co-relation queries the response was YES. [2022-11-25 17:21:27,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7398 conditions, 1519 events. 888/1519 cut-off events. For 6101/6101 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7876 event pairs, 33 based on Foata normal form. 28/1547 useless extension candidates. Maximal degree in co-relation 7373. Up to 529 conditions per place. [2022-11-25 17:21:27,437 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 72 selfloop transitions, 100 changer transitions 3/175 dead transitions. [2022-11-25 17:21:27,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 175 transitions, 2160 flow [2022-11-25 17:21:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1143 transitions. [2022-11-25 17:21:27,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4684426229508197 [2022-11-25 17:21:27,441 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1143 transitions. [2022-11-25 17:21:27,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1143 transitions. [2022-11-25 17:21:27,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:27,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1143 transitions. [2022-11-25 17:21:27,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 142.875) internal successors, (1143), 8 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,449 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,449 INFO L175 Difference]: Start difference. First operand has 97 places, 131 transitions, 1583 flow. Second operand 8 states and 1143 transitions. [2022-11-25 17:21:27,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 175 transitions, 2160 flow [2022-11-25 17:21:27,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 175 transitions, 2093 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-25 17:21:27,486 INFO L231 Difference]: Finished difference. Result has 98 places, 138 transitions, 1841 flow [2022-11-25 17:21:27,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1841, PETRI_PLACES=98, PETRI_TRANSITIONS=138} [2022-11-25 17:21:27,487 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2022-11-25 17:21:27,487 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 138 transitions, 1841 flow [2022-11-25 17:21:27,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.71428571428572) internal successors, (950), 7 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:27,488 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] [2022-11-25 17:21:27,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 17:21:27,488 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)] === [2022-11-25 17:21:27,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:27,489 INFO L85 PathProgramCache]: Analyzing trace with hash 788528670, now seen corresponding path program 14 times [2022-11-25 17:21:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:27,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905588785] [2022-11-25 17:21:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:27,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:27,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:27,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905588785] [2022-11-25 17:21:27,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905588785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:27,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:27,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:21:27,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260606335] [2022-11-25 17:21:27,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:27,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:21:27,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:27,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:21:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:21:27,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:27,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 138 transitions, 1841 flow. Second operand has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:27,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:27,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:27,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:28,521 INFO L130 PetriNetUnfolder]: 953/1722 cut-off events. [2022-11-25 17:21:28,521 INFO L131 PetriNetUnfolder]: For 7201/7201 co-relation queries the response was YES. [2022-11-25 17:21:28,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8903 conditions, 1722 events. 953/1722 cut-off events. For 7201/7201 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9593 event pairs, 16 based on Foata normal form. 60/1782 useless extension candidates. Maximal degree in co-relation 8877. Up to 661 conditions per place. [2022-11-25 17:21:28,541 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 84 selfloop transitions, 136 changer transitions 5/225 dead transitions. [2022-11-25 17:21:28,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 225 transitions, 2742 flow [2022-11-25 17:21:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:28,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1425 transitions. [2022-11-25 17:21:28,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4672131147540984 [2022-11-25 17:21:28,547 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1425 transitions. [2022-11-25 17:21:28,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1425 transitions. [2022-11-25 17:21:28,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:28,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1425 transitions. [2022-11-25 17:21:28,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.5) internal successors, (1425), 10 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:28,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:28,561 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:28,561 INFO L175 Difference]: Start difference. First operand has 98 places, 138 transitions, 1841 flow. Second operand 10 states and 1425 transitions. [2022-11-25 17:21:28,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 225 transitions, 2742 flow [2022-11-25 17:21:28,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 225 transitions, 2598 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-11-25 17:21:28,612 INFO L231 Difference]: Finished difference. Result has 105 places, 168 transitions, 2401 flow [2022-11-25 17:21:28,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2401, PETRI_PLACES=105, PETRI_TRANSITIONS=168} [2022-11-25 17:21:28,614 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 49 predicate places. [2022-11-25 17:21:28,614 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 168 transitions, 2401 flow [2022-11-25 17:21:28,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:28,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:28,615 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] [2022-11-25 17:21:28,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 17:21:28,616 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)] === [2022-11-25 17:21:28,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2077832450, now seen corresponding path program 15 times [2022-11-25 17:21:28,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:28,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383622909] [2022-11-25 17:21:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:29,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:29,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383622909] [2022-11-25 17:21:29,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383622909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:29,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:29,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:21:29,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610789823] [2022-11-25 17:21:29,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:29,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:21:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:29,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:21:29,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:21:30,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 305 [2022-11-25 17:21:30,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 168 transitions, 2401 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:30,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:30,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 305 [2022-11-25 17:21:30,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:31,101 INFO L130 PetriNetUnfolder]: 945/1730 cut-off events. [2022-11-25 17:21:31,101 INFO L131 PetriNetUnfolder]: For 9784/9784 co-relation queries the response was YES. [2022-11-25 17:21:31,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10414 conditions, 1730 events. 945/1730 cut-off events. For 9784/9784 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9830 event pairs, 12 based on Foata normal form. 28/1758 useless extension candidates. Maximal degree in co-relation 10385. Up to 661 conditions per place. [2022-11-25 17:21:31,121 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 78 selfloop transitions, 139 changer transitions 5/222 dead transitions. [2022-11-25 17:21:31,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 222 transitions, 3116 flow [2022-11-25 17:21:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1301 transitions. [2022-11-25 17:21:31,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42655737704918034 [2022-11-25 17:21:31,125 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1301 transitions. [2022-11-25 17:21:31,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1301 transitions. [2022-11-25 17:21:31,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:31,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1301 transitions. [2022-11-25 17:21:31,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 130.1) internal successors, (1301), 10 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:31,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:31,136 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:31,136 INFO L175 Difference]: Start difference. First operand has 105 places, 168 transitions, 2401 flow. Second operand 10 states and 1301 transitions. [2022-11-25 17:21:31,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 222 transitions, 3116 flow [2022-11-25 17:21:31,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 222 transitions, 3030 flow, removed 37 selfloop flow, removed 3 redundant places. [2022-11-25 17:21:31,220 INFO L231 Difference]: Finished difference. Result has 111 places, 171 transitions, 2638 flow [2022-11-25 17:21:31,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2638, PETRI_PLACES=111, PETRI_TRANSITIONS=171} [2022-11-25 17:21:31,221 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2022-11-25 17:21:31,221 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 171 transitions, 2638 flow [2022-11-25 17:21:31,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:31,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:31,222 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] [2022-11-25 17:21:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 17:21:31,222 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)] === [2022-11-25 17:21:31,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1864699638, now seen corresponding path program 16 times [2022-11-25 17:21:31,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:31,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766110166] [2022-11-25 17:21:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:31,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:31,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:31,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766110166] [2022-11-25 17:21:31,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766110166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:31,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:31,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:21:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877175322] [2022-11-25 17:21:31,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:21:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:21:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:21:32,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 305 [2022-11-25 17:21:32,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 171 transitions, 2638 flow. Second operand has 10 states, 10 states have (on average 126.6) internal successors, (1266), 10 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:32,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:32,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 305 [2022-11-25 17:21:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:33,124 INFO L130 PetriNetUnfolder]: 968/1791 cut-off events. [2022-11-25 17:21:33,124 INFO L131 PetriNetUnfolder]: For 10483/10483 co-relation queries the response was YES. [2022-11-25 17:21:33,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11254 conditions, 1791 events. 968/1791 cut-off events. For 10483/10483 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10523 event pairs, 12 based on Foata normal form. 30/1821 useless extension candidates. Maximal degree in co-relation 11225. Up to 644 conditions per place. [2022-11-25 17:21:33,154 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 86 selfloop transitions, 149 changer transitions 8/243 dead transitions. [2022-11-25 17:21:33,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 243 transitions, 3590 flow [2022-11-25 17:21:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:21:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:21:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1740 transitions. [2022-11-25 17:21:33,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43883984867591425 [2022-11-25 17:21:33,159 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1740 transitions. [2022-11-25 17:21:33,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1740 transitions. [2022-11-25 17:21:33,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:33,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1740 transitions. [2022-11-25 17:21:33,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 133.84615384615384) internal successors, (1740), 13 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:33,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:33,172 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:33,172 INFO L175 Difference]: Start difference. First operand has 111 places, 171 transitions, 2638 flow. Second operand 13 states and 1740 transitions. [2022-11-25 17:21:33,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 243 transitions, 3590 flow [2022-11-25 17:21:33,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 243 transitions, 3295 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-25 17:21:33,266 INFO L231 Difference]: Finished difference. Result has 115 places, 181 transitions, 2787 flow [2022-11-25 17:21:33,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2787, PETRI_PLACES=115, PETRI_TRANSITIONS=181} [2022-11-25 17:21:33,267 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2022-11-25 17:21:33,267 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 181 transitions, 2787 flow [2022-11-25 17:21:33,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 126.6) internal successors, (1266), 10 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:33,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:33,268 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] [2022-11-25 17:21:33,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 17:21:33,269 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)] === [2022-11-25 17:21:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1600689084, now seen corresponding path program 17 times [2022-11-25 17:21:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:33,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149890290] [2022-11-25 17:21:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:33,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:33,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:33,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149890290] [2022-11-25 17:21:33,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149890290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:33,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:33,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:33,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144917887] [2022-11-25 17:21:33,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:33,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:33,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:33,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:33,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:33,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 181 transitions, 2787 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:33,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:33,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:33,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:34,523 INFO L130 PetriNetUnfolder]: 987/1840 cut-off events. [2022-11-25 17:21:34,523 INFO L131 PetriNetUnfolder]: For 12058/12058 co-relation queries the response was YES. [2022-11-25 17:21:34,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 1840 events. 987/1840 cut-off events. For 12058/12058 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10981 event pairs, 16 based on Foata normal form. 58/1898 useless extension candidates. Maximal degree in co-relation 11627. Up to 620 conditions per place. [2022-11-25 17:21:34,551 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 91 selfloop transitions, 157 changer transitions 22/270 dead transitions. [2022-11-25 17:21:34,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 270 transitions, 4070 flow [2022-11-25 17:21:34,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:21:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:21:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1718 transitions. [2022-11-25 17:21:34,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46939890710382515 [2022-11-25 17:21:34,556 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1718 transitions. [2022-11-25 17:21:34,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1718 transitions. [2022-11-25 17:21:34,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:34,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1718 transitions. [2022-11-25 17:21:34,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 143.16666666666666) internal successors, (1718), 12 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:34,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:34,567 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:34,567 INFO L175 Difference]: Start difference. First operand has 115 places, 181 transitions, 2787 flow. Second operand 12 states and 1718 transitions. [2022-11-25 17:21:34,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 270 transitions, 4070 flow [2022-11-25 17:21:34,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 270 transitions, 3786 flow, removed 16 selfloop flow, removed 9 redundant places. [2022-11-25 17:21:34,655 INFO L231 Difference]: Finished difference. Result has 119 places, 188 transitions, 3024 flow [2022-11-25 17:21:34,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3024, PETRI_PLACES=119, PETRI_TRANSITIONS=188} [2022-11-25 17:21:34,656 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2022-11-25 17:21:34,657 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 188 transitions, 3024 flow [2022-11-25 17:21:34,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:34,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:34,658 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] [2022-11-25 17:21:34,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 17:21:34,658 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)] === [2022-11-25 17:21:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1828880900, now seen corresponding path program 18 times [2022-11-25 17:21:34,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:34,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581442920] [2022-11-25 17:21:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:34,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:34,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581442920] [2022-11-25 17:21:34,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581442920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:34,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:34,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:21:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004226033] [2022-11-25 17:21:34,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:34,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:21:34,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:21:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:21:35,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:35,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 188 transitions, 3024 flow. Second operand has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:35,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:35,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:35,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:35,759 INFO L130 PetriNetUnfolder]: 886/1685 cut-off events. [2022-11-25 17:21:35,760 INFO L131 PetriNetUnfolder]: For 12421/12421 co-relation queries the response was YES. [2022-11-25 17:21:35,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11225 conditions, 1685 events. 886/1685 cut-off events. For 12421/12421 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 10017 event pairs, 24 based on Foata normal form. 28/1713 useless extension candidates. Maximal degree in co-relation 11196. Up to 635 conditions per place. [2022-11-25 17:21:35,787 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 75 selfloop transitions, 156 changer transitions 9/240 dead transitions. [2022-11-25 17:21:35,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 240 transitions, 3745 flow [2022-11-25 17:21:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1423 transitions. [2022-11-25 17:21:35,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4665573770491803 [2022-11-25 17:21:35,792 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1423 transitions. [2022-11-25 17:21:35,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1423 transitions. [2022-11-25 17:21:35,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:35,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1423 transitions. [2022-11-25 17:21:35,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.3) internal successors, (1423), 10 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:35,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:35,809 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:35,809 INFO L175 Difference]: Start difference. First operand has 119 places, 188 transitions, 3024 flow. Second operand 10 states and 1423 transitions. [2022-11-25 17:21:35,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 240 transitions, 3745 flow [2022-11-25 17:21:35,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 240 transitions, 3652 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-11-25 17:21:35,908 INFO L231 Difference]: Finished difference. Result has 123 places, 186 transitions, 3209 flow [2022-11-25 17:21:35,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3209, PETRI_PLACES=123, PETRI_TRANSITIONS=186} [2022-11-25 17:21:35,909 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2022-11-25 17:21:35,909 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 186 transitions, 3209 flow [2022-11-25 17:21:35,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:35,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:35,910 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] [2022-11-25 17:21:35,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 17:21:35,910 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:35,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:35,911 INFO L85 PathProgramCache]: Analyzing trace with hash 413311050, now seen corresponding path program 19 times [2022-11-25 17:21:35,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:35,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816644962] [2022-11-25 17:21:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:35,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:36,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:36,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816644962] [2022-11-25 17:21:36,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816644962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:36,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:36,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:36,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859127751] [2022-11-25 17:21:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:36,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:36,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:36,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:36,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:36,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 186 transitions, 3209 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:36,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:36,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:36,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:37,153 INFO L130 PetriNetUnfolder]: 862/1663 cut-off events. [2022-11-25 17:21:37,153 INFO L131 PetriNetUnfolder]: For 15031/15031 co-relation queries the response was YES. [2022-11-25 17:21:37,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11681 conditions, 1663 events. 862/1663 cut-off events. For 15031/15031 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10107 event pairs, 26 based on Foata normal form. 34/1697 useless extension candidates. Maximal degree in co-relation 11652. Up to 594 conditions per place. [2022-11-25 17:21:37,177 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 78 selfloop transitions, 159 changer transitions 19/256 dead transitions. [2022-11-25 17:21:37,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 256 transitions, 4269 flow [2022-11-25 17:21:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:21:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:21:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1844 transitions. [2022-11-25 17:21:37,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46506935687263556 [2022-11-25 17:21:37,182 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1844 transitions. [2022-11-25 17:21:37,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1844 transitions. [2022-11-25 17:21:37,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:37,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1844 transitions. [2022-11-25 17:21:37,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.84615384615384) internal successors, (1844), 13 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) [2022-11-25 17:21:37,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:37,194 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:37,195 INFO L175 Difference]: Start difference. First operand has 123 places, 186 transitions, 3209 flow. Second operand 13 states and 1844 transitions. [2022-11-25 17:21:37,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 256 transitions, 4269 flow [2022-11-25 17:21:37,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 256 transitions, 3943 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-25 17:21:37,274 INFO L231 Difference]: Finished difference. Result has 126 places, 188 transitions, 3282 flow [2022-11-25 17:21:37,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3282, PETRI_PLACES=126, PETRI_TRANSITIONS=188} [2022-11-25 17:21:37,275 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 70 predicate places. [2022-11-25 17:21:37,275 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 188 transitions, 3282 flow [2022-11-25 17:21:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:37,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:37,276 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] [2022-11-25 17:21:37,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 17:21:37,277 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash 282635492, now seen corresponding path program 20 times [2022-11-25 17:21:37,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:37,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258928627] [2022-11-25 17:21:37,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:37,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:37,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:37,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258928627] [2022-11-25 17:21:37,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258928627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:37,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:37,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413711771] [2022-11-25 17:21:37,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:37,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:37,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:37,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 188 transitions, 3282 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:37,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:37,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:37,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:38,225 INFO L130 PetriNetUnfolder]: 763/1480 cut-off events. [2022-11-25 17:21:38,225 INFO L131 PetriNetUnfolder]: For 14700/14700 co-relation queries the response was YES. [2022-11-25 17:21:38,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10176 conditions, 1480 events. 763/1480 cut-off events. For 14700/14700 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 8596 event pairs, 60 based on Foata normal form. 2/1482 useless extension candidates. Maximal degree in co-relation 10148. Up to 726 conditions per place. [2022-11-25 17:21:38,248 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 118 selfloop transitions, 138 changer transitions 5/261 dead transitions. [2022-11-25 17:21:38,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 261 transitions, 4542 flow [2022-11-25 17:21:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:21:38,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:21:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1535 transitions. [2022-11-25 17:21:38,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45752608047690013 [2022-11-25 17:21:38,253 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1535 transitions. [2022-11-25 17:21:38,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1535 transitions. [2022-11-25 17:21:38,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:38,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1535 transitions. [2022-11-25 17:21:38,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 139.54545454545453) internal successors, (1535), 11 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:38,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:38,265 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:38,265 INFO L175 Difference]: Start difference. First operand has 126 places, 188 transitions, 3282 flow. Second operand 11 states and 1535 transitions. [2022-11-25 17:21:38,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 261 transitions, 4542 flow [2022-11-25 17:21:38,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 261 transitions, 4426 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-25 17:21:38,335 INFO L231 Difference]: Finished difference. Result has 132 places, 220 transitions, 4244 flow [2022-11-25 17:21:38,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3190, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4244, PETRI_PLACES=132, PETRI_TRANSITIONS=220} [2022-11-25 17:21:38,336 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2022-11-25 17:21:38,336 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 220 transitions, 4244 flow [2022-11-25 17:21:38,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:38,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:38,337 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] [2022-11-25 17:21:38,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 17:21:38,338 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:38,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:38,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1543876464, now seen corresponding path program 21 times [2022-11-25 17:21:38,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:38,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953111] [2022-11-25 17:21:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:39,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:39,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953111] [2022-11-25 17:21:39,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:39,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:39,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:21:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510088884] [2022-11-25 17:21:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:39,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:21:39,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:21:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:21:39,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 305 [2022-11-25 17:21:39,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 220 transitions, 4244 flow. Second operand has 10 states, 10 states have (on average 128.6) internal successors, (1286), 10 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:39,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:39,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 305 [2022-11-25 17:21:39,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:40,352 INFO L130 PetriNetUnfolder]: 747/1456 cut-off events. [2022-11-25 17:21:40,352 INFO L131 PetriNetUnfolder]: For 17706/17706 co-relation queries the response was YES. [2022-11-25 17:21:40,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10835 conditions, 1456 events. 747/1456 cut-off events. For 17706/17706 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8444 event pairs, 98 based on Foata normal form. 4/1460 useless extension candidates. Maximal degree in co-relation 10804. Up to 1357 conditions per place. [2022-11-25 17:21:40,371 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 210 selfloop transitions, 26 changer transitions 8/244 dead transitions. [2022-11-25 17:21:40,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 244 transitions, 4795 flow [2022-11-25 17:21:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:21:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:21:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1712 transitions. [2022-11-25 17:21:40,376 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4317780580075662 [2022-11-25 17:21:40,376 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1712 transitions. [2022-11-25 17:21:40,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1712 transitions. [2022-11-25 17:21:40,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:40,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1712 transitions. [2022-11-25 17:21:40,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 131.69230769230768) internal successors, (1712), 13 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:40,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:40,388 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:40,388 INFO L175 Difference]: Start difference. First operand has 132 places, 220 transitions, 4244 flow. Second operand 13 states and 1712 transitions. [2022-11-25 17:21:40,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 244 transitions, 4795 flow [2022-11-25 17:21:40,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 244 transitions, 4726 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-11-25 17:21:40,475 INFO L231 Difference]: Finished difference. Result has 141 places, 217 transitions, 4155 flow [2022-11-25 17:21:40,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=4175, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4155, PETRI_PLACES=141, PETRI_TRANSITIONS=217} [2022-11-25 17:21:40,476 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2022-11-25 17:21:40,477 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 217 transitions, 4155 flow [2022-11-25 17:21:40,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.6) internal successors, (1286), 10 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:40,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:40,478 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] [2022-11-25 17:21:40,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-25 17:21:40,478 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:40,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2119016634, now seen corresponding path program 22 times [2022-11-25 17:21:40,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:40,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457045453] [2022-11-25 17:21:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:40,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:40,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457045453] [2022-11-25 17:21:40,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457045453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:40,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:40,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612356887] [2022-11-25 17:21:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:40,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:40,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:40,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:40,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:40,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 217 transitions, 4155 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:40,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:40,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:40,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:41,396 INFO L130 PetriNetUnfolder]: 743/1450 cut-off events. [2022-11-25 17:21:41,397 INFO L131 PetriNetUnfolder]: For 17682/17682 co-relation queries the response was YES. [2022-11-25 17:21:41,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10655 conditions, 1450 events. 743/1450 cut-off events. For 17682/17682 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8428 event pairs, 98 based on Foata normal form. 2/1452 useless extension candidates. Maximal degree in co-relation 10623. Up to 1375 conditions per place. [2022-11-25 17:21:41,418 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 212 selfloop transitions, 18 changer transitions 10/240 dead transitions. [2022-11-25 17:21:41,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 240 transitions, 4743 flow [2022-11-25 17:21:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:21:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:21:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1639 transitions. [2022-11-25 17:21:41,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44781420765027324 [2022-11-25 17:21:41,423 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1639 transitions. [2022-11-25 17:21:41,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1639 transitions. [2022-11-25 17:21:41,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:41,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1639 transitions. [2022-11-25 17:21:41,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.58333333333334) internal successors, (1639), 12 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:41,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:41,434 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:41,435 INFO L175 Difference]: Start difference. First operand has 141 places, 217 transitions, 4155 flow. Second operand 12 states and 1639 transitions. [2022-11-25 17:21:41,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 240 transitions, 4743 flow [2022-11-25 17:21:41,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 240 transitions, 4667 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-25 17:21:41,522 INFO L231 Difference]: Finished difference. Result has 141 places, 215 transitions, 4109 flow [2022-11-25 17:21:41,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=4084, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4109, PETRI_PLACES=141, PETRI_TRANSITIONS=215} [2022-11-25 17:21:41,523 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2022-11-25 17:21:41,524 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 215 transitions, 4109 flow [2022-11-25 17:21:41,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:41,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:41,525 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:21:41,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-25 17:21:41,525 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1770343244, now seen corresponding path program 23 times [2022-11-25 17:21:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:41,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530112544] [2022-11-25 17:21:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:41,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530112544] [2022-11-25 17:21:41,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530112544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:41,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:41,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:41,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723785677] [2022-11-25 17:21:41,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:41,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:41,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:41,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 215 transitions, 4109 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:41,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:41,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:41,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:42,504 INFO L130 PetriNetUnfolder]: 732/1427 cut-off events. [2022-11-25 17:21:42,505 INFO L131 PetriNetUnfolder]: For 17264/17264 co-relation queries the response was YES. [2022-11-25 17:21:42,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10474 conditions, 1427 events. 732/1427 cut-off events. For 17264/17264 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8296 event pairs, 98 based on Foata normal form. 4/1431 useless extension candidates. Maximal degree in co-relation 10442. Up to 1359 conditions per place. [2022-11-25 17:21:42,525 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 206 selfloop transitions, 16 changer transitions 8/230 dead transitions. [2022-11-25 17:21:42,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 230 transitions, 4591 flow [2022-11-25 17:21:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:42,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1370 transitions. [2022-11-25 17:21:42,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4491803278688525 [2022-11-25 17:21:42,532 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1370 transitions. [2022-11-25 17:21:42,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1370 transitions. [2022-11-25 17:21:42,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:42,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1370 transitions. [2022-11-25 17:21:42,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:42,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:42,540 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:42,541 INFO L175 Difference]: Start difference. First operand has 141 places, 215 transitions, 4109 flow. Second operand 10 states and 1370 transitions. [2022-11-25 17:21:42,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 230 transitions, 4591 flow [2022-11-25 17:21:42,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 230 transitions, 4550 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-25 17:21:42,620 INFO L231 Difference]: Finished difference. Result has 138 places, 208 transitions, 3971 flow [2022-11-25 17:21:42,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3971, PETRI_PLACES=138, PETRI_TRANSITIONS=208} [2022-11-25 17:21:42,621 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2022-11-25 17:21:42,622 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 208 transitions, 3971 flow [2022-11-25 17:21:42,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:42,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:42,623 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] [2022-11-25 17:21:42,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-25 17:21:42,623 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:42,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:42,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1685473328, now seen corresponding path program 24 times [2022-11-25 17:21:42,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:42,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651953770] [2022-11-25 17:21:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:42,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:42,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:42,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651953770] [2022-11-25 17:21:42,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651953770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:42,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:42,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:42,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202015668] [2022-11-25 17:21:42,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:42,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:42,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 305 [2022-11-25 17:21:42,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 208 transitions, 3971 flow. Second operand has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:42,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:42,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 305 [2022-11-25 17:21:42,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:43,729 INFO L130 PetriNetUnfolder]: 743/1444 cut-off events. [2022-11-25 17:21:43,729 INFO L131 PetriNetUnfolder]: For 18638/18638 co-relation queries the response was YES. [2022-11-25 17:21:43,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10718 conditions, 1444 events. 743/1444 cut-off events. For 18638/18638 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8392 event pairs, 80 based on Foata normal form. 6/1450 useless extension candidates. Maximal degree in co-relation 10686. Up to 1010 conditions per place. [2022-11-25 17:21:43,746 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 150 selfloop transitions, 102 changer transitions 20/272 dead transitions. [2022-11-25 17:21:43,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 272 transitions, 5279 flow [2022-11-25 17:21:43,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:21:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:21:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1841 transitions. [2022-11-25 17:21:43,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.464312736443884 [2022-11-25 17:21:43,761 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1841 transitions. [2022-11-25 17:21:43,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1841 transitions. [2022-11-25 17:21:43,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:43,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1841 transitions. [2022-11-25 17:21:43,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 141.6153846153846) internal successors, (1841), 13 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:43,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:43,774 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:43,775 INFO L175 Difference]: Start difference. First operand has 138 places, 208 transitions, 3971 flow. Second operand 13 states and 1841 transitions. [2022-11-25 17:21:43,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 272 transitions, 5279 flow [2022-11-25 17:21:43,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 272 transitions, 5206 flow, removed 0 selfloop flow, removed 15 redundant places. [2022-11-25 17:21:43,867 INFO L231 Difference]: Finished difference. Result has 138 places, 218 transitions, 4393 flow [2022-11-25 17:21:43,868 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3898, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4393, PETRI_PLACES=138, PETRI_TRANSITIONS=218} [2022-11-25 17:21:43,868 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2022-11-25 17:21:43,869 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 218 transitions, 4393 flow [2022-11-25 17:21:43,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:43,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:43,869 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] [2022-11-25 17:21:43,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-25 17:21:43,870 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:43,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash 703744426, now seen corresponding path program 25 times [2022-11-25 17:21:43,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:43,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710407006] [2022-11-25 17:21:43,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:44,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710407006] [2022-11-25 17:21:44,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710407006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:44,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:44,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79813786] [2022-11-25 17:21:44,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:44,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:44,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 218 transitions, 4393 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:44,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:44,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:44,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:44,920 INFO L130 PetriNetUnfolder]: 701/1378 cut-off events. [2022-11-25 17:21:44,920 INFO L131 PetriNetUnfolder]: For 21517/21517 co-relation queries the response was YES. [2022-11-25 17:21:44,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10711 conditions, 1378 events. 701/1378 cut-off events. For 21517/21517 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7956 event pairs, 46 based on Foata normal form. 4/1382 useless extension candidates. Maximal degree in co-relation 10676. Up to 716 conditions per place. [2022-11-25 17:21:44,934 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 115 selfloop transitions, 124 changer transitions 11/250 dead transitions. [2022-11-25 17:21:44,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 250 transitions, 5019 flow [2022-11-25 17:21:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1410 transitions. [2022-11-25 17:21:44,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46229508196721314 [2022-11-25 17:21:44,947 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1410 transitions. [2022-11-25 17:21:44,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1410 transitions. [2022-11-25 17:21:44,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:44,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1410 transitions. [2022-11-25 17:21:44,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:44,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:44,957 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:44,957 INFO L175 Difference]: Start difference. First operand has 138 places, 218 transitions, 4393 flow. Second operand 10 states and 1410 transitions. [2022-11-25 17:21:44,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 250 transitions, 5019 flow [2022-11-25 17:21:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 250 transitions, 4803 flow, removed 43 selfloop flow, removed 8 redundant places. [2022-11-25 17:21:45,066 INFO L231 Difference]: Finished difference. Result has 138 places, 209 transitions, 4297 flow [2022-11-25 17:21:45,067 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=4164, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4297, PETRI_PLACES=138, PETRI_TRANSITIONS=209} [2022-11-25 17:21:45,067 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2022-11-25 17:21:45,067 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 209 transitions, 4297 flow [2022-11-25 17:21:45,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:45,068 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:45,068 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] [2022-11-25 17:21:45,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-25 17:21:45,069 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:45,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:45,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2086653562, now seen corresponding path program 26 times [2022-11-25 17:21:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:45,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048412191] [2022-11-25 17:21:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:45,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:45,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048412191] [2022-11-25 17:21:45,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048412191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:45,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:45,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794395451] [2022-11-25 17:21:45,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:45,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:45,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 209 transitions, 4297 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:45,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:45,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:45,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:46,023 INFO L130 PetriNetUnfolder]: 688/1345 cut-off events. [2022-11-25 17:21:46,023 INFO L131 PetriNetUnfolder]: For 22196/22196 co-relation queries the response was YES. [2022-11-25 17:21:46,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10611 conditions, 1345 events. 688/1345 cut-off events. For 22196/22196 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7674 event pairs, 80 based on Foata normal form. 2/1347 useless extension candidates. Maximal degree in co-relation 10577. Up to 1308 conditions per place. [2022-11-25 17:21:46,042 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 208 selfloop transitions, 7 changer transitions 7/222 dead transitions. [2022-11-25 17:21:46,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 222 transitions, 4771 flow [2022-11-25 17:21:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:21:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:21:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1229 transitions. [2022-11-25 17:21:46,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4477231329690346 [2022-11-25 17:21:46,047 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1229 transitions. [2022-11-25 17:21:46,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1229 transitions. [2022-11-25 17:21:46,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:46,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1229 transitions. [2022-11-25 17:21:46,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.55555555555554) internal successors, (1229), 9 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:46,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:46,058 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:46,058 INFO L175 Difference]: Start difference. First operand has 138 places, 209 transitions, 4297 flow. Second operand 9 states and 1229 transitions. [2022-11-25 17:21:46,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 222 transitions, 4771 flow [2022-11-25 17:21:46,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 222 transitions, 4563 flow, removed 10 selfloop flow, removed 7 redundant places. [2022-11-25 17:21:46,167 INFO L231 Difference]: Finished difference. Result has 134 places, 205 transitions, 4031 flow [2022-11-25 17:21:46,167 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4031, PETRI_PLACES=134, PETRI_TRANSITIONS=205} [2022-11-25 17:21:46,168 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2022-11-25 17:21:46,168 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 205 transitions, 4031 flow [2022-11-25 17:21:46,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:46,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:46,169 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] [2022-11-25 17:21:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-25 17:21:46,170 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:46,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1368877250, now seen corresponding path program 27 times [2022-11-25 17:21:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:46,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292447730] [2022-11-25 17:21:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:46,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292447730] [2022-11-25 17:21:46,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292447730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:46,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:46,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:21:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501218637] [2022-11-25 17:21:46,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:46,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:21:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:21:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:21:47,175 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 305 [2022-11-25 17:21:47,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 205 transitions, 4031 flow. Second operand has 10 states, 10 states have (on average 127.6) internal successors, (1276), 10 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:47,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:47,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 305 [2022-11-25 17:21:47,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:47,726 INFO L130 PetriNetUnfolder]: 681/1328 cut-off events. [2022-11-25 17:21:47,726 INFO L131 PetriNetUnfolder]: For 20054/20054 co-relation queries the response was YES. [2022-11-25 17:21:47,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9936 conditions, 1328 events. 681/1328 cut-off events. For 20054/20054 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7533 event pairs, 46 based on Foata normal form. 2/1330 useless extension candidates. Maximal degree in co-relation 9903. Up to 712 conditions per place. [2022-11-25 17:21:47,736 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 113 selfloop transitions, 120 changer transitions 2/235 dead transitions. [2022-11-25 17:21:47,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 235 transitions, 4640 flow [2022-11-25 17:21:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:21:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:21:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1205 transitions. [2022-11-25 17:21:47,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43897996357012753 [2022-11-25 17:21:47,745 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1205 transitions. [2022-11-25 17:21:47,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1205 transitions. [2022-11-25 17:21:47,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:47,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1205 transitions. [2022-11-25 17:21:47,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:47,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:47,753 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:47,753 INFO L175 Difference]: Start difference. First operand has 134 places, 205 transitions, 4031 flow. Second operand 9 states and 1205 transitions. [2022-11-25 17:21:47,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 235 transitions, 4640 flow [2022-11-25 17:21:47,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 235 transitions, 4616 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-25 17:21:47,832 INFO L231 Difference]: Finished difference. Result has 131 places, 202 transitions, 4252 flow [2022-11-25 17:21:47,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=3978, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4252, PETRI_PLACES=131, PETRI_TRANSITIONS=202} [2022-11-25 17:21:47,833 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 75 predicate places. [2022-11-25 17:21:47,833 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 202 transitions, 4252 flow [2022-11-25 17:21:47,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.6) internal successors, (1276), 10 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:47,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:47,834 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] [2022-11-25 17:21:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-25 17:21:47,834 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1510520196, now seen corresponding path program 28 times [2022-11-25 17:21:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:47,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041756901] [2022-11-25 17:21:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:48,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041756901] [2022-11-25 17:21:48,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041756901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:48,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:48,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470333811] [2022-11-25 17:21:48,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:48,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:48,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:48,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 202 transitions, 4252 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:48,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:48,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:48,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:48,671 INFO L130 PetriNetUnfolder]: 675/1318 cut-off events. [2022-11-25 17:21:48,672 INFO L131 PetriNetUnfolder]: For 22083/22083 co-relation queries the response was YES. [2022-11-25 17:21:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10384 conditions, 1318 events. 675/1318 cut-off events. For 22083/22083 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7455 event pairs, 84 based on Foata normal form. 4/1322 useless extension candidates. Maximal degree in co-relation 10351. Up to 1281 conditions per place. [2022-11-25 17:21:48,687 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 196 selfloop transitions, 3 changer transitions 17/216 dead transitions. [2022-11-25 17:21:48,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 216 transitions, 4726 flow [2022-11-25 17:21:48,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:21:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:21:48,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1237 transitions. [2022-11-25 17:21:48,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4506375227686703 [2022-11-25 17:21:48,690 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1237 transitions. [2022-11-25 17:21:48,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1237 transitions. [2022-11-25 17:21:48,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:48,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1237 transitions. [2022-11-25 17:21:48,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.44444444444446) internal successors, (1237), 9 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:48,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:48,699 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:48,699 INFO L175 Difference]: Start difference. First operand has 131 places, 202 transitions, 4252 flow. Second operand 9 states and 1237 transitions. [2022-11-25 17:21:48,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 216 transitions, 4726 flow [2022-11-25 17:21:48,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 216 transitions, 4556 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-25 17:21:48,790 INFO L231 Difference]: Finished difference. Result has 134 places, 196 transitions, 3984 flow [2022-11-25 17:21:48,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3984, PETRI_PLACES=134, PETRI_TRANSITIONS=196} [2022-11-25 17:21:48,791 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2022-11-25 17:21:48,791 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 196 transitions, 3984 flow [2022-11-25 17:21:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:48,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:48,792 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] [2022-11-25 17:21:48,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-25 17:21:48,792 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash -916006492, now seen corresponding path program 29 times [2022-11-25 17:21:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:48,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959275567] [2022-11-25 17:21:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:49,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:49,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959275567] [2022-11-25 17:21:49,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959275567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:49,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:49,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:21:49,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767590593] [2022-11-25 17:21:49,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:49,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:21:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:49,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:21:49,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:21:49,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 305 [2022-11-25 17:21:49,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 196 transitions, 3984 flow. Second operand has 8 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:49,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:49,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 305 [2022-11-25 17:21:49,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:50,073 INFO L130 PetriNetUnfolder]: 506/1045 cut-off events. [2022-11-25 17:21:50,073 INFO L131 PetriNetUnfolder]: For 21991/21991 co-relation queries the response was YES. [2022-11-25 17:21:50,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7667 conditions, 1045 events. 506/1045 cut-off events. For 21991/21991 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5938 event pairs, 28 based on Foata normal form. 68/1113 useless extension candidates. Maximal degree in co-relation 7633. Up to 404 conditions per place. [2022-11-25 17:21:50,085 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 83 selfloop transitions, 99 changer transitions 12/194 dead transitions. [2022-11-25 17:21:50,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 194 transitions, 3717 flow [2022-11-25 17:21:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:21:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:21:50,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1085 transitions. [2022-11-25 17:21:50,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.444672131147541 [2022-11-25 17:21:50,088 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1085 transitions. [2022-11-25 17:21:50,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1085 transitions. [2022-11-25 17:21:50,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:50,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1085 transitions. [2022-11-25 17:21:50,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,095 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,095 INFO L175 Difference]: Start difference. First operand has 134 places, 196 transitions, 3984 flow. Second operand 8 states and 1085 transitions. [2022-11-25 17:21:50,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 194 transitions, 3717 flow [2022-11-25 17:21:50,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 194 transitions, 3348 flow, removed 21 selfloop flow, removed 15 redundant places. [2022-11-25 17:21:50,162 INFO L231 Difference]: Finished difference. Result has 117 places, 153 transitions, 2911 flow [2022-11-25 17:21:50,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2911, PETRI_PLACES=117, PETRI_TRANSITIONS=153} [2022-11-25 17:21:50,163 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2022-11-25 17:21:50,163 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 153 transitions, 2911 flow [2022-11-25 17:21:50,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:50,164 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] [2022-11-25 17:21:50,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-25 17:21:50,164 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:50,164 INFO L85 PathProgramCache]: Analyzing trace with hash -28296260, now seen corresponding path program 30 times [2022-11-25 17:21:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:50,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489680136] [2022-11-25 17:21:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:50,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:50,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:50,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489680136] [2022-11-25 17:21:50,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489680136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:50,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:50,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:21:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100820627] [2022-11-25 17:21:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:50,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:21:50,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:50,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:21:50,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:21:50,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:50,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 153 transitions, 2911 flow. Second operand has 8 states, 8 states have (on average 135.25) internal successors, (1082), 8 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:50,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:50,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:50,885 INFO L130 PetriNetUnfolder]: 371/774 cut-off events. [2022-11-25 17:21:50,885 INFO L131 PetriNetUnfolder]: For 9481/9481 co-relation queries the response was YES. [2022-11-25 17:21:50,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5733 conditions, 774 events. 371/774 cut-off events. For 9481/9481 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4184 event pairs, 10 based on Foata normal form. 28/802 useless extension candidates. Maximal degree in co-relation 5701. Up to 222 conditions per place. [2022-11-25 17:21:50,890 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 62 selfloop transitions, 92 changer transitions 20/174 dead transitions. [2022-11-25 17:21:50,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 174 transitions, 3088 flow [2022-11-25 17:21:50,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1415 transitions. [2022-11-25 17:21:50,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4639344262295082 [2022-11-25 17:21:50,893 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1415 transitions. [2022-11-25 17:21:50,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1415 transitions. [2022-11-25 17:21:50,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:50,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1415 transitions. [2022-11-25 17:21:50,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 141.5) internal successors, (1415), 10 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,899 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,899 INFO L175 Difference]: Start difference. First operand has 117 places, 153 transitions, 2911 flow. Second operand 10 states and 1415 transitions. [2022-11-25 17:21:50,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 174 transitions, 3088 flow [2022-11-25 17:21:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 174 transitions, 2799 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-11-25 17:21:50,945 INFO L231 Difference]: Finished difference. Result has 117 places, 122 transitions, 2110 flow [2022-11-25 17:21:50,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2110, PETRI_PLACES=117, PETRI_TRANSITIONS=122} [2022-11-25 17:21:50,945 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 61 predicate places. [2022-11-25 17:21:50,946 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 122 transitions, 2110 flow [2022-11-25 17:21:50,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.25) internal successors, (1082), 8 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:50,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:50,946 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] [2022-11-25 17:21:50,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-25 17:21:50,947 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2017673354, now seen corresponding path program 31 times [2022-11-25 17:21:50,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:50,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006481791] [2022-11-25 17:21:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:51,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006481791] [2022-11-25 17:21:51,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006481791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:51,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:51,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456766711] [2022-11-25 17:21:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:51,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:51,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:51,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 122 transitions, 2110 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:51,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:51,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:51,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:51,605 INFO L130 PetriNetUnfolder]: 180/423 cut-off events. [2022-11-25 17:21:51,605 INFO L131 PetriNetUnfolder]: For 6529/6529 co-relation queries the response was YES. [2022-11-25 17:21:51,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 423 events. 180/423 cut-off events. For 6529/6529 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2191 event pairs, 0 based on Foata normal form. 40/463 useless extension candidates. Maximal degree in co-relation 3145. Up to 103 conditions per place. [2022-11-25 17:21:51,609 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 50 selfloop transitions, 55 changer transitions 34/139 dead transitions. [2022-11-25 17:21:51,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 139 transitions, 2294 flow [2022-11-25 17:21:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:21:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:21:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1800 transitions. [2022-11-25 17:21:51,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45397225725094575 [2022-11-25 17:21:51,613 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1800 transitions. [2022-11-25 17:21:51,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1800 transitions. [2022-11-25 17:21:51,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:51,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1800 transitions. [2022-11-25 17:21:51,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 138.46153846153845) internal successors, (1800), 13 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:51,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:51,622 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:51,622 INFO L175 Difference]: Start difference. First operand has 117 places, 122 transitions, 2110 flow. Second operand 13 states and 1800 transitions. [2022-11-25 17:21:51,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 139 transitions, 2294 flow [2022-11-25 17:21:51,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 139 transitions, 1854 flow, removed 7 selfloop flow, removed 19 redundant places. [2022-11-25 17:21:51,649 INFO L231 Difference]: Finished difference. Result has 110 places, 79 transitions, 1071 flow [2022-11-25 17:21:51,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1071, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2022-11-25 17:21:51,649 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2022-11-25 17:21:51,650 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 1071 flow [2022-11-25 17:21:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:51,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:51,650 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] [2022-11-25 17:21:51,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-25 17:21:51,651 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:51,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1048274994, now seen corresponding path program 32 times [2022-11-25 17:21:51,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:51,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733545537] [2022-11-25 17:21:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:52,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:52,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733545537] [2022-11-25 17:21:52,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733545537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:52,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:52,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:21:52,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047234863] [2022-11-25 17:21:52,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:52,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:21:52,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:52,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:21:52,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:21:52,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 305 [2022-11-25 17:21:52,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 128.6) internal successors, (1286), 10 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:52,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:52,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 305 [2022-11-25 17:21:52,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:52,713 INFO L130 PetriNetUnfolder]: 130/307 cut-off events. [2022-11-25 17:21:52,713 INFO L131 PetriNetUnfolder]: For 2570/2570 co-relation queries the response was YES. [2022-11-25 17:21:52,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 307 events. 130/307 cut-off events. For 2570/2570 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1373 event pairs, 2 based on Foata normal form. 2/309 useless extension candidates. Maximal degree in co-relation 1842. Up to 86 conditions per place. [2022-11-25 17:21:52,715 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 54 selfloop transitions, 52 changer transitions 5/111 dead transitions. [2022-11-25 17:21:52,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 111 transitions, 1487 flow [2022-11-25 17:21:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:21:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:21:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1462 transitions. [2022-11-25 17:21:52,718 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43576751117734724 [2022-11-25 17:21:52,718 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1462 transitions. [2022-11-25 17:21:52,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1462 transitions. [2022-11-25 17:21:52,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:52,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1462 transitions. [2022-11-25 17:21:52,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.9090909090909) internal successors, (1462), 11 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:52,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:52,725 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:52,726 INFO L175 Difference]: Start difference. First operand has 110 places, 79 transitions, 1071 flow. Second operand 11 states and 1462 transitions. [2022-11-25 17:21:52,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 111 transitions, 1487 flow [2022-11-25 17:21:52,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 111 transitions, 1084 flow, removed 28 selfloop flow, removed 22 redundant places. [2022-11-25 17:21:52,739 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 955 flow [2022-11-25 17:21:52,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=955, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2022-11-25 17:21:52,740 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2022-11-25 17:21:52,740 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 955 flow [2022-11-25 17:21:52,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.6) internal successors, (1286), 10 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:52,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:52,741 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] [2022-11-25 17:21:52,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-25 17:21:52,741 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:52,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1683893532, now seen corresponding path program 33 times [2022-11-25 17:21:52,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:52,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528233543] [2022-11-25 17:21:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:52,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528233543] [2022-11-25 17:21:52,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528233543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:52,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:52,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761682597] [2022-11-25 17:21:52,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:52,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:53,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:21:53,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 955 flow. Second operand has 9 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:53,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:53,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:21:53,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:53,407 INFO L130 PetriNetUnfolder]: 118/283 cut-off events. [2022-11-25 17:21:53,407 INFO L131 PetriNetUnfolder]: For 1571/1571 co-relation queries the response was YES. [2022-11-25 17:21:53,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 283 events. 118/283 cut-off events. For 1571/1571 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1230 event pairs, 4 based on Foata normal form. 2/285 useless extension candidates. Maximal degree in co-relation 1456. Up to 198 conditions per place. [2022-11-25 17:21:53,410 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 78 selfloop transitions, 21 changer transitions 8/107 dead transitions. [2022-11-25 17:21:53,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 107 transitions, 1215 flow [2022-11-25 17:21:53,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:21:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-25 17:21:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1730 transitions. [2022-11-25 17:21:53,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43631778058007564 [2022-11-25 17:21:53,413 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1730 transitions. [2022-11-25 17:21:53,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1730 transitions. [2022-11-25 17:21:53,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:53,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1730 transitions. [2022-11-25 17:21:53,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 133.07692307692307) internal successors, (1730), 13 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:53,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:53,421 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 305.0) internal successors, (4270), 14 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:53,421 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 955 flow. Second operand 13 states and 1730 transitions. [2022-11-25 17:21:53,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 107 transitions, 1215 flow [2022-11-25 17:21:53,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 1133 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-25 17:21:53,431 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 855 flow [2022-11-25 17:21:53,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=855, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2022-11-25 17:21:53,432 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2022-11-25 17:21:53,432 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 855 flow [2022-11-25 17:21:53,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:53,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:53,433 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] [2022-11-25 17:21:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-25 17:21:53,433 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 896597744, now seen corresponding path program 34 times [2022-11-25 17:21:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:53,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097170682] [2022-11-25 17:21:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:53,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:53,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097170682] [2022-11-25 17:21:53,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097170682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:53,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:53,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:53,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516137763] [2022-11-25 17:21:53,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:53,755 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:53,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 855 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:53,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:53,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:53,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:54,015 INFO L130 PetriNetUnfolder]: 114/277 cut-off events. [2022-11-25 17:21:54,015 INFO L131 PetriNetUnfolder]: For 1021/1021 co-relation queries the response was YES. [2022-11-25 17:21:54,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 277 events. 114/277 cut-off events. For 1021/1021 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1210 event pairs, 4 based on Foata normal form. 2/279 useless extension candidates. Maximal degree in co-relation 1391. Up to 210 conditions per place. [2022-11-25 17:21:54,017 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 78 selfloop transitions, 15 changer transitions 10/103 dead transitions. [2022-11-25 17:21:54,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 1146 flow [2022-11-25 17:21:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:21:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:21:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1644 transitions. [2022-11-25 17:21:54,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4491803278688525 [2022-11-25 17:21:54,021 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1644 transitions. [2022-11-25 17:21:54,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1644 transitions. [2022-11-25 17:21:54,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:54,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1644 transitions. [2022-11-25 17:21:54,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,029 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,029 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 855 flow. Second operand 12 states and 1644 transitions. [2022-11-25 17:21:54,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 1146 flow [2022-11-25 17:21:54,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 1075 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-25 17:21:54,037 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 815 flow [2022-11-25 17:21:54,038 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=815, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2022-11-25 17:21:54,038 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2022-11-25 17:21:54,038 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 815 flow [2022-11-25 17:21:54,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:54,039 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] [2022-11-25 17:21:54,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-25 17:21:54,039 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:54,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:54,040 INFO L85 PathProgramCache]: Analyzing trace with hash 490990326, now seen corresponding path program 35 times [2022-11-25 17:21:54,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:54,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858472564] [2022-11-25 17:21:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:54,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:54,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:54,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858472564] [2022-11-25 17:21:54,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858472564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:54,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:54,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724463445] [2022-11-25 17:21:54,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:54,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:54,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:54,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:54,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:54,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:54,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 815 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:54,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:54,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:54,622 INFO L130 PetriNetUnfolder]: 105/260 cut-off events. [2022-11-25 17:21:54,622 INFO L131 PetriNetUnfolder]: For 865/865 co-relation queries the response was YES. [2022-11-25 17:21:54,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 260 events. 105/260 cut-off events. For 865/865 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1126 event pairs, 6 based on Foata normal form. 4/264 useless extension candidates. Maximal degree in co-relation 1294. Up to 196 conditions per place. [2022-11-25 17:21:54,624 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 72 selfloop transitions, 15 changer transitions 7/94 dead transitions. [2022-11-25 17:21:54,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 1056 flow [2022-11-25 17:21:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1374 transitions. [2022-11-25 17:21:54,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45049180327868854 [2022-11-25 17:21:54,628 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1374 transitions. [2022-11-25 17:21:54,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1374 transitions. [2022-11-25 17:21:54,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:54,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1374 transitions. [2022-11-25 17:21:54,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 137.4) internal successors, (1374), 10 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,634 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,634 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 815 flow. Second operand 10 states and 1374 transitions. [2022-11-25 17:21:54,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 1056 flow [2022-11-25 17:21:54,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 1020 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-25 17:21:54,642 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 788 flow [2022-11-25 17:21:54,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=788, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2022-11-25 17:21:54,642 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2022-11-25 17:21:54,643 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 788 flow [2022-11-25 17:21:54,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:54,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:54,643 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] [2022-11-25 17:21:54,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-25 17:21:54,644 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash -785938600, now seen corresponding path program 36 times [2022-11-25 17:21:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:54,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430033768] [2022-11-25 17:21:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:55,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:55,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430033768] [2022-11-25 17:21:55,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430033768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:55,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:55,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:21:55,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900233602] [2022-11-25 17:21:55,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:55,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:21:55,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:21:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:21:55,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 305 [2022-11-25 17:21:55,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 788 flow. Second operand has 10 states, 10 states have (on average 128.6) internal successors, (1286), 10 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:55,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:55,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 305 [2022-11-25 17:21:55,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:55,738 INFO L130 PetriNetUnfolder]: 95/238 cut-off events. [2022-11-25 17:21:55,738 INFO L131 PetriNetUnfolder]: For 801/801 co-relation queries the response was YES. [2022-11-25 17:21:55,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 238 events. 95/238 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 997 event pairs, 4 based on Foata normal form. 4/242 useless extension candidates. Maximal degree in co-relation 1220. Up to 82 conditions per place. [2022-11-25 17:21:55,740 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 43 selfloop transitions, 36 changer transitions 11/90 dead transitions. [2022-11-25 17:21:55,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 90 transitions, 1002 flow [2022-11-25 17:21:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1324 transitions. [2022-11-25 17:21:55,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4340983606557377 [2022-11-25 17:21:55,743 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1324 transitions. [2022-11-25 17:21:55,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1324 transitions. [2022-11-25 17:21:55,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:55,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1324 transitions. [2022-11-25 17:21:55,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 132.4) internal successors, (1324), 10 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:55,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:55,749 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:55,749 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 788 flow. Second operand 10 states and 1324 transitions. [2022-11-25 17:21:55,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 90 transitions, 1002 flow [2022-11-25 17:21:55,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 90 transitions, 966 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:21:55,756 INFO L231 Difference]: Finished difference. Result has 98 places, 68 transitions, 719 flow [2022-11-25 17:21:55,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=719, PETRI_PLACES=98, PETRI_TRANSITIONS=68} [2022-11-25 17:21:55,757 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 42 predicate places. [2022-11-25 17:21:55,757 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 68 transitions, 719 flow [2022-11-25 17:21:55,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.6) internal successors, (1286), 10 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:55,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:55,758 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] [2022-11-25 17:21:55,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-25 17:21:55,758 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash 573511280, now seen corresponding path program 37 times [2022-11-25 17:21:55,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:55,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770496065] [2022-11-25 17:21:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:55,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:55,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770496065] [2022-11-25 17:21:55,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770496065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:55,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:55,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:55,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932286218] [2022-11-25 17:21:55,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:55,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:55,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:56,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:56,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 68 transitions, 719 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:56,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:56,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:56,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:56,255 INFO L130 PetriNetUnfolder]: 82/205 cut-off events. [2022-11-25 17:21:56,255 INFO L131 PetriNetUnfolder]: For 945/945 co-relation queries the response was YES. [2022-11-25 17:21:56,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 205 events. 82/205 cut-off events. For 945/945 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 783 event pairs, 6 based on Foata normal form. 2/207 useless extension candidates. Maximal degree in co-relation 1127. Up to 172 conditions per place. [2022-11-25 17:21:56,257 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 64 selfloop transitions, 6 changer transitions 7/77 dead transitions. [2022-11-25 17:21:56,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 77 transitions, 896 flow [2022-11-25 17:21:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:21:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:21:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1223 transitions. [2022-11-25 17:21:56,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44553734061930783 [2022-11-25 17:21:56,260 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1223 transitions. [2022-11-25 17:21:56,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1223 transitions. [2022-11-25 17:21:56,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:56,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1223 transitions. [2022-11-25 17:21:56,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:56,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:56,265 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:56,265 INFO L175 Difference]: Start difference. First operand has 98 places, 68 transitions, 719 flow. Second operand 9 states and 1223 transitions. [2022-11-25 17:21:56,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 77 transitions, 896 flow [2022-11-25 17:21:56,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 77 transitions, 766 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-11-25 17:21:56,272 INFO L231 Difference]: Finished difference. Result has 89 places, 64 transitions, 560 flow [2022-11-25 17:21:56,272 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=560, PETRI_PLACES=89, PETRI_TRANSITIONS=64} [2022-11-25 17:21:56,272 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2022-11-25 17:21:56,272 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 64 transitions, 560 flow [2022-11-25 17:21:56,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:56,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:56,273 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] [2022-11-25 17:21:56,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-25 17:21:56,274 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1185060348, now seen corresponding path program 38 times [2022-11-25 17:21:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:56,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929496668] [2022-11-25 17:21:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:56,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:56,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:56,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929496668] [2022-11-25 17:21:56,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929496668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:56,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:56,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:21:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202457350] [2022-11-25 17:21:56,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:56,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:21:56,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:21:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:21:57,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 305 [2022-11-25 17:21:57,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 64 transitions, 560 flow. Second operand has 10 states, 10 states have (on average 127.6) internal successors, (1276), 10 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:57,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 305 [2022-11-25 17:21:57,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:57,505 INFO L130 PetriNetUnfolder]: 78/197 cut-off events. [2022-11-25 17:21:57,505 INFO L131 PetriNetUnfolder]: For 633/633 co-relation queries the response was YES. [2022-11-25 17:21:57,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 197 events. 78/197 cut-off events. For 633/633 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 735 event pairs, 4 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 933. Up to 164 conditions per place. [2022-11-25 17:21:57,506 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 62 selfloop transitions, 7 changer transitions 5/74 dead transitions. [2022-11-25 17:21:57,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 74 transitions, 738 flow [2022-11-25 17:21:57,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:21:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:21:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1169 transitions. [2022-11-25 17:21:57,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42586520947176687 [2022-11-25 17:21:57,513 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1169 transitions. [2022-11-25 17:21:57,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1169 transitions. [2022-11-25 17:21:57,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:57,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1169 transitions. [2022-11-25 17:21:57,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.88888888888889) internal successors, (1169), 9 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,524 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,524 INFO L175 Difference]: Start difference. First operand has 89 places, 64 transitions, 560 flow. Second operand 9 states and 1169 transitions. [2022-11-25 17:21:57,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 74 transitions, 738 flow [2022-11-25 17:21:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 74 transitions, 724 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 17:21:57,529 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 533 flow [2022-11-25 17:21:57,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=533, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2022-11-25 17:21:57,530 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 32 predicate places. [2022-11-25 17:21:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 533 flow [2022-11-25 17:21:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.6) internal successors, (1276), 10 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:57,531 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] [2022-11-25 17:21:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-25 17:21:57,531 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:57,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1063937334, now seen corresponding path program 39 times [2022-11-25 17:21:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:57,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033764963] [2022-11-25 17:21:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:57,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033764963] [2022-11-25 17:21:57,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033764963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:57,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:57,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718480911] [2022-11-25 17:21:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:57,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:57,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:57,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:57,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 533 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:57,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:57,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:57,977 INFO L130 PetriNetUnfolder]: 72/183 cut-off events. [2022-11-25 17:21:57,977 INFO L131 PetriNetUnfolder]: For 543/543 co-relation queries the response was YES. [2022-11-25 17:21:57,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 183 events. 72/183 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 653 event pairs, 2 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 859. Up to 78 conditions per place. [2022-11-25 17:21:57,979 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 36 selfloop transitions, 24 changer transitions 12/72 dead transitions. [2022-11-25 17:21:57,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 72 transitions, 703 flow [2022-11-25 17:21:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:21:57,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:21:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1232 transitions. [2022-11-25 17:21:57,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.448816029143898 [2022-11-25 17:21:57,982 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1232 transitions. [2022-11-25 17:21:57,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1232 transitions. [2022-11-25 17:21:57,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:57,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1232 transitions. [2022-11-25 17:21:57,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.88888888888889) internal successors, (1232), 9 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,989 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,989 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 533 flow. Second operand 9 states and 1232 transitions. [2022-11-25 17:21:57,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 72 transitions, 703 flow [2022-11-25 17:21:57,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 72 transitions, 679 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-25 17:21:57,996 INFO L231 Difference]: Finished difference. Result has 86 places, 54 transitions, 482 flow [2022-11-25 17:21:57,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=86, PETRI_TRANSITIONS=54} [2022-11-25 17:21:57,996 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2022-11-25 17:21:57,997 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 54 transitions, 482 flow [2022-11-25 17:21:57,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:57,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:57,998 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] [2022-11-25 17:21:57,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-25 17:21:57,998 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:57,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:57,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1275890928, now seen corresponding path program 40 times [2022-11-25 17:21:57,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:57,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211493179] [2022-11-25 17:21:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:57,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:58,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211493179] [2022-11-25 17:21:58,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211493179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:58,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:58,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:58,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029167074] [2022-11-25 17:21:58,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:58,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:58,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 305 [2022-11-25 17:21:58,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 54 transitions, 482 flow. Second operand has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:58,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:58,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 305 [2022-11-25 17:21:58,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:58,512 INFO L130 PetriNetUnfolder]: 62/167 cut-off events. [2022-11-25 17:21:58,512 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2022-11-25 17:21:58,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 167 events. 62/167 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 621 event pairs, 4 based on Foata normal form. 4/171 useless extension candidates. Maximal degree in co-relation 798. Up to 96 conditions per place. [2022-11-25 17:21:58,513 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 40 selfloop transitions, 19 changer transitions 7/66 dead transitions. [2022-11-25 17:21:58,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 66 transitions, 685 flow [2022-11-25 17:21:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1361 transitions. [2022-11-25 17:21:58,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4462295081967213 [2022-11-25 17:21:58,516 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1361 transitions. [2022-11-25 17:21:58,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1361 transitions. [2022-11-25 17:21:58,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:58,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1361 transitions. [2022-11-25 17:21:58,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.1) internal successors, (1361), 10 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:58,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:58,521 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:58,522 INFO L175 Difference]: Start difference. First operand has 86 places, 54 transitions, 482 flow. Second operand 10 states and 1361 transitions. [2022-11-25 17:21:58,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 66 transitions, 685 flow [2022-11-25 17:21:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 527 flow, removed 5 selfloop flow, removed 12 redundant places. [2022-11-25 17:21:58,526 INFO L231 Difference]: Finished difference. Result has 77 places, 53 transitions, 389 flow [2022-11-25 17:21:58,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=389, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2022-11-25 17:21:58,527 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2022-11-25 17:21:58,527 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 389 flow [2022-11-25 17:21:58,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.88888888888889) internal successors, (1205), 9 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:58,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:58,528 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] [2022-11-25 17:21:58,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-25 17:21:58,528 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:58,529 INFO L85 PathProgramCache]: Analyzing trace with hash 69019778, now seen corresponding path program 41 times [2022-11-25 17:21:58,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:58,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474860977] [2022-11-25 17:21:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:58,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:58,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:58,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474860977] [2022-11-25 17:21:58,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474860977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:58,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:58,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443301766] [2022-11-25 17:21:58,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:58,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:58,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:58,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:58,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:58,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:58,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 53 transitions, 389 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:58,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:58,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:58,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:59,092 INFO L130 PetriNetUnfolder]: 54/147 cut-off events. [2022-11-25 17:21:59,092 INFO L131 PetriNetUnfolder]: For 287/287 co-relation queries the response was YES. [2022-11-25 17:21:59,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 147 events. 54/147 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 490 event pairs, 2 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 637. Up to 100 conditions per place. [2022-11-25 17:21:59,093 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 44 selfloop transitions, 14 changer transitions 6/64 dead transitions. [2022-11-25 17:21:59,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 64 transitions, 550 flow [2022-11-25 17:21:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:21:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-25 17:21:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1635 transitions. [2022-11-25 17:21:59,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44672131147540983 [2022-11-25 17:21:59,096 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1635 transitions. [2022-11-25 17:21:59,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1635 transitions. [2022-11-25 17:21:59,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:59,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1635 transitions. [2022-11-25 17:21:59,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.25) internal successors, (1635), 12 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,104 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 305.0) internal successors, (3965), 13 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,104 INFO L175 Difference]: Start difference. First operand has 77 places, 53 transitions, 389 flow. Second operand 12 states and 1635 transitions. [2022-11-25 17:21:59,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 64 transitions, 550 flow [2022-11-25 17:21:59,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 64 transitions, 488 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-25 17:21:59,107 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 336 flow [2022-11-25 17:21:59,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=336, PETRI_PLACES=77, PETRI_TRANSITIONS=50} [2022-11-25 17:21:59,108 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2022-11-25 17:21:59,108 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 336 flow [2022-11-25 17:21:59,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:59,109 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] [2022-11-25 17:21:59,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-25 17:21:59,109 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1988772008, now seen corresponding path program 42 times [2022-11-25 17:21:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052504962] [2022-11-25 17:21:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:59,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:59,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:59,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052504962] [2022-11-25 17:21:59,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052504962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:59,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:59,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:59,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845609777] [2022-11-25 17:21:59,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:59,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:59,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:21:59,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:21:59,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 50 transitions, 336 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:21:59,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:21:59,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:21:59,639 INFO L130 PetriNetUnfolder]: 49/140 cut-off events. [2022-11-25 17:21:59,639 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-25 17:21:59,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 140 events. 49/140 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 467 event pairs, 0 based on Foata normal form. 4/144 useless extension candidates. Maximal degree in co-relation 545. Up to 41 conditions per place. [2022-11-25 17:21:59,640 INFO L137 encePairwiseOnDemand]: 295/305 looper letters, 29 selfloop transitions, 22 changer transitions 9/60 dead transitions. [2022-11-25 17:21:59,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 60 transitions, 485 flow [2022-11-25 17:21:59,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:21:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 17:21:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1368 transitions. [2022-11-25 17:21:59,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4485245901639344 [2022-11-25 17:21:59,643 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1368 transitions. [2022-11-25 17:21:59,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1368 transitions. [2022-11-25 17:21:59,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:21:59,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1368 transitions. [2022-11-25 17:21:59,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 136.8) internal successors, (1368), 10 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,647 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 305.0) internal successors, (3355), 11 states have internal predecessors, (3355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,648 INFO L175 Difference]: Start difference. First operand has 77 places, 50 transitions, 336 flow. Second operand 10 states and 1368 transitions. [2022-11-25 17:21:59,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 60 transitions, 485 flow [2022-11-25 17:21:59,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 60 transitions, 451 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 17:21:59,650 INFO L231 Difference]: Finished difference. Result has 78 places, 44 transitions, 314 flow [2022-11-25 17:21:59,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=314, PETRI_PLACES=78, PETRI_TRANSITIONS=44} [2022-11-25 17:21:59,651 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2022-11-25 17:21:59,651 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 44 transitions, 314 flow [2022-11-25 17:21:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:21:59,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:21:59,652 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] [2022-11-25 17:21:59,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-25 17:21:59,652 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:21:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:21:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 424469314, now seen corresponding path program 43 times [2022-11-25 17:21:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:21:59,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163899031] [2022-11-25 17:21:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:21:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:21:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:21:59,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:21:59,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:21:59,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163899031] [2022-11-25 17:21:59,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163899031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:21:59,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:21:59,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:21:59,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515836587] [2022-11-25 17:21:59,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:21:59,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:21:59,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:21:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:21:59,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:22:00,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 305 [2022-11-25 17:22:00,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 44 transitions, 314 flow. Second operand has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:22:00,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 305 [2022-11-25 17:22:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:22:00,202 INFO L130 PetriNetUnfolder]: 38/111 cut-off events. [2022-11-25 17:22:00,202 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2022-11-25 17:22:00,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 111 events. 38/111 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 306 event pairs, 4 based on Foata normal form. 2/113 useless extension candidates. Maximal degree in co-relation 477. Up to 76 conditions per place. [2022-11-25 17:22:00,203 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 37 selfloop transitions, 8 changer transitions 7/52 dead transitions. [2022-11-25 17:22:00,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 52 transitions, 433 flow [2022-11-25 17:22:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:22:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:22:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1496 transitions. [2022-11-25 17:22:00,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4459016393442623 [2022-11-25 17:22:00,206 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1496 transitions. [2022-11-25 17:22:00,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1496 transitions. [2022-11-25 17:22:00,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:22:00,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1496 transitions. [2022-11-25 17:22:00,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,212 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,213 INFO L175 Difference]: Start difference. First operand has 78 places, 44 transitions, 314 flow. Second operand 11 states and 1496 transitions. [2022-11-25 17:22:00,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 52 transitions, 433 flow [2022-11-25 17:22:00,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 52 transitions, 377 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-25 17:22:00,216 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 240 flow [2022-11-25 17:22:00,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=240, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2022-11-25 17:22:00,216 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2022-11-25 17:22:00,217 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 240 flow [2022-11-25 17:22:00,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.88888888888889) internal successors, (1214), 9 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,217 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:22:00,217 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] [2022-11-25 17:22:00,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-25 17:22:00,218 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:22:00,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:22:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1565966302, now seen corresponding path program 44 times [2022-11-25 17:22:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:22:00,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904903236] [2022-11-25 17:22:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:22:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:22:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:22:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:22:00,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:22:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904903236] [2022-11-25 17:22:00,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904903236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:22:00,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:22:00,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:22:00,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805524818] [2022-11-25 17:22:00,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:22:00,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:22:00,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:22:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:22:00,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:22:00,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 305 [2022-11-25 17:22:00,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:22:00,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 305 [2022-11-25 17:22:00,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:22:00,639 INFO L130 PetriNetUnfolder]: 32/97 cut-off events. [2022-11-25 17:22:00,639 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2022-11-25 17:22:00,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 97 events. 32/97 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 237 event pairs, 0 based on Foata normal form. 2/99 useless extension candidates. Maximal degree in co-relation 372. Up to 27 conditions per place. [2022-11-25 17:22:00,640 INFO L137 encePairwiseOnDemand]: 296/305 looper letters, 29 selfloop transitions, 17 changer transitions 3/49 dead transitions. [2022-11-25 17:22:00,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 49 transitions, 357 flow [2022-11-25 17:22:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:22:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:22:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1511 transitions. [2022-11-25 17:22:00,643 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4503725782414307 [2022-11-25 17:22:00,643 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1511 transitions. [2022-11-25 17:22:00,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1511 transitions. [2022-11-25 17:22:00,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:22:00,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1511 transitions. [2022-11-25 17:22:00,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 137.36363636363637) internal successors, (1511), 11 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,650 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,651 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 240 flow. Second operand 11 states and 1511 transitions. [2022-11-25 17:22:00,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 49 transitions, 357 flow [2022-11-25 17:22:00,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 49 transitions, 318 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-25 17:22:00,653 INFO L231 Difference]: Finished difference. Result has 66 places, 36 transitions, 208 flow [2022-11-25 17:22:00,653 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=208, PETRI_PLACES=66, PETRI_TRANSITIONS=36} [2022-11-25 17:22:00,654 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2022-11-25 17:22:00,654 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 36 transitions, 208 flow [2022-11-25 17:22:00,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:00,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:22:00,655 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] [2022-11-25 17:22:00,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-25 17:22:00,655 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:22:00,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:22:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1598112868, now seen corresponding path program 45 times [2022-11-25 17:22:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:22:00,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753873425] [2022-11-25 17:22:00,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:22:00,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:22:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:22:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:22:00,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:22:00,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753873425] [2022-11-25 17:22:00,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753873425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:22:00,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:22:00,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:22:00,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887962238] [2022-11-25 17:22:00,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:22:00,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:22:00,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:22:00,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:22:00,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:22:01,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:22:01,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 36 transitions, 208 flow. Second operand has 9 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:22:01,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:22:01,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:22:01,210 INFO L130 PetriNetUnfolder]: 24/81 cut-off events. [2022-11-25 17:22:01,210 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-11-25 17:22:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 81 events. 24/81 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 164 event pairs, 2 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 302. Up to 40 conditions per place. [2022-11-25 17:22:01,211 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 28 selfloop transitions, 7 changer transitions 10/45 dead transitions. [2022-11-25 17:22:01,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 45 transitions, 311 flow [2022-11-25 17:22:01,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:22:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:22:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1451 transitions. [2022-11-25 17:22:01,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43248882265275707 [2022-11-25 17:22:01,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1451 transitions. [2022-11-25 17:22:01,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1451 transitions. [2022-11-25 17:22:01,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:22:01,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1451 transitions. [2022-11-25 17:22:01,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.9090909090909) internal successors, (1451), 11 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,219 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 305.0) internal successors, (3660), 12 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,219 INFO L175 Difference]: Start difference. First operand has 66 places, 36 transitions, 208 flow. Second operand 11 states and 1451 transitions. [2022-11-25 17:22:01,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 45 transitions, 311 flow [2022-11-25 17:22:01,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 45 transitions, 277 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-25 17:22:01,221 INFO L231 Difference]: Finished difference. Result has 66 places, 30 transitions, 147 flow [2022-11-25 17:22:01,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=147, PETRI_PLACES=66, PETRI_TRANSITIONS=30} [2022-11-25 17:22:01,221 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2022-11-25 17:22:01,221 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 30 transitions, 147 flow [2022-11-25 17:22:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:22:01,222 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] [2022-11-25 17:22:01,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-25 17:22:01,222 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:22:01,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:22:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1068471184, now seen corresponding path program 46 times [2022-11-25 17:22:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:22:01,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890542104] [2022-11-25 17:22:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:22:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:22:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:22:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:22:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:22:01,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890542104] [2022-11-25 17:22:01,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890542104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:22:01,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:22:01,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:22:01,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003118227] [2022-11-25 17:22:01,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:22:01,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:22:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:22:01,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:22:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:22:01,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 305 [2022-11-25 17:22:01,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 30 transitions, 147 flow. Second operand has 9 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:22:01,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 305 [2022-11-25 17:22:01,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:22:01,718 INFO L130 PetriNetUnfolder]: 15/58 cut-off events. [2022-11-25 17:22:01,719 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-25 17:22:01,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 58 events. 15/58 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 2 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 200. Up to 29 conditions per place. [2022-11-25 17:22:01,719 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 25 selfloop transitions, 6 changer transitions 5/36 dead transitions. [2022-11-25 17:22:01,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 36 transitions, 223 flow [2022-11-25 17:22:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:22:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:22:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1189 transitions. [2022-11-25 17:22:01,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4331511839708561 [2022-11-25 17:22:01,721 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1189 transitions. [2022-11-25 17:22:01,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1189 transitions. [2022-11-25 17:22:01,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:22:01,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1189 transitions. [2022-11-25 17:22:01,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.11111111111111) internal successors, (1189), 9 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,726 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,726 INFO L175 Difference]: Start difference. First operand has 66 places, 30 transitions, 147 flow. Second operand 9 states and 1189 transitions. [2022-11-25 17:22:01,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 36 transitions, 223 flow [2022-11-25 17:22:01,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 36 transitions, 188 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-25 17:22:01,728 INFO L231 Difference]: Finished difference. Result has 55 places, 26 transitions, 100 flow [2022-11-25 17:22:01,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=100, PETRI_PLACES=55, PETRI_TRANSITIONS=26} [2022-11-25 17:22:01,728 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2022-11-25 17:22:01,728 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 26 transitions, 100 flow [2022-11-25 17:22:01,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 130.88888888888889) internal successors, (1178), 9 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:22:01,729 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] [2022-11-25 17:22:01,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-25 17:22:01,729 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-11-25 17:22:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:22:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1718049412, now seen corresponding path program 47 times [2022-11-25 17:22:01,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:22:01,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418541815] [2022-11-25 17:22:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:22:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:22:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:22:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:22:01,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:22:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418541815] [2022-11-25 17:22:01,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418541815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:22:01,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:22:01,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:22:01,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872934099] [2022-11-25 17:22:01,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:22:01,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:22:01,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:22:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:22:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:22:01,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 305 [2022-11-25 17:22:01,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 26 transitions, 100 flow. Second operand has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:01,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:22:01,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 305 [2022-11-25 17:22:01,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:22:02,094 INFO L130 PetriNetUnfolder]: 10/35 cut-off events. [2022-11-25 17:22:02,095 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-25 17:22:02,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 35 events. 10/35 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 117. Up to 9 conditions per place. [2022-11-25 17:22:02,095 INFO L137 encePairwiseOnDemand]: 297/305 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2022-11-25 17:22:02,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 23 transitions, 134 flow [2022-11-25 17:22:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:22:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 17:22:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1221 transitions. [2022-11-25 17:22:02,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4448087431693989 [2022-11-25 17:22:02,098 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1221 transitions. [2022-11-25 17:22:02,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1221 transitions. [2022-11-25 17:22:02,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:22:02,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1221 transitions. [2022-11-25 17:22:02,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.66666666666666) internal successors, (1221), 9 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:02,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:02,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 305.0) internal successors, (3050), 10 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:02,104 INFO L175 Difference]: Start difference. First operand has 55 places, 26 transitions, 100 flow. Second operand 9 states and 1221 transitions. [2022-11-25 17:22:02,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 23 transitions, 134 flow [2022-11-25 17:22:02,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 23 transitions, 110 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-25 17:22:02,105 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2022-11-25 17:22:02,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2022-11-25 17:22:02,105 INFO L288 CegarLoopForPetriNet]: 56 programPoint places, -16 predicate places. [2022-11-25 17:22:02,106 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2022-11-25 17:22:02,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:22:02,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2022-11-25 17:22:02,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2022-11-25 17:22:02,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2022-11-25 17:22:02,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2022-11-25 17:22:02,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2022-11-25 17:22:02,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2022-11-25 17:22:02,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2022-11-25 17:22:02,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2022-11-25 17:22:02,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2022-11-25 17:22:02,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2022-11-25 17:22:02,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2022-11-25 17:22:02,112 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2022-11-25 17:22:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2022-11-25 17:22:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2022-11-25 17:22:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2022-11-25 17:22:02,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2022-11-25 17:22:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2022-11-25 17:22:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2022-11-25 17:22:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2022-11-25 17:22:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2022-11-25 17:22:02,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2022-11-25 17:22:02,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2022-11-25 17:22:02,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-25 17:22:02,115 INFO L445 BasicCegarLoop]: Path program histogram: [47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:22:02,119 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:22:02,120 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:22:02,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:22:02 BasicIcfg [2022-11-25 17:22:02,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:22:02,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:22:02,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:22:02,125 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:22:02,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:21:01" (3/4) ... [2022-11-25 17:22:02,130 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:22:02,137 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:22:02,137 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:22:02,138 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 17:22:02,138 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-11-25 17:22:02,144 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-25 17:22:02,144 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:22:02,145 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 17:22:02,145 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:22:02,199 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:22:02,199 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:22:02,200 INFO L158 Benchmark]: Toolchain (without parser) took 61602.59ms. Allocated memory was 190.8MB in the beginning and 750.8MB in the end (delta: 559.9MB). Free memory was 145.9MB in the beginning and 275.7MB in the end (delta: -129.8MB). Peak memory consumption was 431.7MB. Max. memory is 16.1GB. [2022-11-25 17:22:02,200 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:22:02,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.81ms. Allocated memory is still 190.8MB. Free memory was 145.9MB in the beginning and 130.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:22:02,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.22ms. Allocated memory is still 190.8MB. Free memory was 130.6MB in the beginning and 128.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:22:02,202 INFO L158 Benchmark]: Boogie Preprocessor took 30.27ms. Allocated memory is still 190.8MB. Free memory was 128.5MB in the beginning and 127.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:22:02,202 INFO L158 Benchmark]: RCFGBuilder took 798.40ms. Allocated memory is still 190.8MB. Free memory was 127.1MB in the beginning and 102.5MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-25 17:22:02,203 INFO L158 Benchmark]: TraceAbstraction took 60343.38ms. Allocated memory was 190.8MB in the beginning and 750.8MB in the end (delta: 559.9MB). Free memory was 101.3MB in the beginning and 278.9MB in the end (delta: -177.6MB). Peak memory consumption was 383.5MB. Max. memory is 16.1GB. [2022-11-25 17:22:02,203 INFO L158 Benchmark]: Witness Printer took 74.92ms. Allocated memory is still 750.8MB. Free memory was 278.9MB in the beginning and 275.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:22:02,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.81ms. Allocated memory is still 190.8MB. Free memory was 145.9MB in the beginning and 130.6MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.22ms. Allocated memory is still 190.8MB. Free memory was 130.6MB in the beginning and 128.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.27ms. Allocated memory is still 190.8MB. Free memory was 128.5MB in the beginning and 127.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 798.40ms. Allocated memory is still 190.8MB. Free memory was 127.1MB in the beginning and 102.5MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 60343.38ms. Allocated memory was 190.8MB in the beginning and 750.8MB in the end (delta: 559.9MB). Free memory was 101.3MB in the beginning and 278.9MB in the end (delta: -177.6MB). Peak memory consumption was 383.5MB. Max. memory is 16.1GB. * Witness Printer took 74.92ms. Allocated memory is still 750.8MB. Free memory was 278.9MB in the beginning and 275.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.0s, 164 PlacesBefore, 56 PlacesAfterwards, 153 TransitionsBefore, 43 TransitionsAfterwards, 1702 CoEnabledTransitionPairs, 8 FixpointIterations, 82 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 143 TotalNumberOfCompositions, 4642 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2716, independent: 2603, independent conditional: 0, independent unconditional: 2603, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1232, independent: 1198, independent conditional: 0, independent unconditional: 1198, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1232, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 68, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 229, independent: 99, independent conditional: 0, independent unconditional: 99, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2716, independent: 1405, independent conditional: 0, independent unconditional: 1405, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 1232, unknown conditional: 0, unknown unconditional: 1232] , Statistics on independence cache: Total cache size (in pairs): 187, Positive cache size: 172, Positive conditional cache size: 0, Positive unconditional cache size: 172, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 146]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 120]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 194 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 60.1s, OverallIterations: 56, TraceHistogramMax: 1, PathProgramHistogramMax: 47, EmptinessCheckTime: 0.0s, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5767 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4429 mSDsluCounter, 5718 SdHoareTripleChecker+Invalid, 12.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5188 mSDsCounter, 1006 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16765 IncrementalHoareTripleChecker+Invalid, 17771 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1006 mSolverCounterUnsat, 530 mSDtfsCounter, 16765 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 496 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 434 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4393occurred in iteration=33, InterpolantAutomatonStates: 482, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 1271 NumberOfCodeBlocks, 1271 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 1215 ConstructedInterpolants, 0 QuantifiedInterpolants, 6824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 56 InterpolantComputations, 56 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:22:02,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c8113e-a5c9-481f-9b76-28f1cf208b5e/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE