./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:29:46,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:29:46,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:29:46,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:29:46,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:29:46,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:29:46,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:29:46,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:29:46,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:29:46,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:29:46,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:29:46,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:29:46,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:29:46,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:29:46,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:29:46,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:29:46,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:29:46,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:29:46,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:29:46,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:29:46,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:29:46,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:29:46,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:29:46,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:29:46,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:29:46,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:29:46,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:29:46,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:29:46,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:29:46,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:29:46,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:29:46,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:29:46,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:29:46,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:29:46,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:29:46,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:29:46,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:29:46,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:29:46,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:29:46,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:29:46,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:29:46,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 19:29:46,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:29:46,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:29:46,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:29:46,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:29:46,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:29:46,628 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:29:46,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:29:46,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 19:29:46,629 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:29:46,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:29:46,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:29:46,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:29:46,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:29:46,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:29:46,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:29:46,631 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:29:46,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:29:46,631 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:29:46,631 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_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-12-13 19:29:46,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:29:46,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:29:46,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:29:46,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:29:46,813 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:29:46,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-12-13 19:29:49,285 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:29:49,456 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:29:49,456 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-12-13 19:29:49,463 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/data/e152f7cdd/282b93a65cc747ebbc187d28d9c0cc23/FLAG9502c6ded [2022-12-13 19:29:49,856 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/data/e152f7cdd/282b93a65cc747ebbc187d28d9c0cc23 [2022-12-13 19:29:49,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:29:49,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:29:49,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:29:49,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:29:49,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:29:49,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:29:49" (1/1) ... [2022-12-13 19:29:49,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103e69be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:49, skipping insertion in model container [2022-12-13 19:29:49,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:29:49" (1/1) ... [2022-12-13 19:29:49,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:29:49,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:29:49,990 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:49,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:49,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:49,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:49,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:49,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:49,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:49,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:49,999 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,000 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,001 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,027 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_0afb7c32-710d-4c8c-a3da-7b17586b77ca/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-12-13 19:29:50,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:29:50,042 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:29:50,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:29:50,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:29:50,069 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_0afb7c32-710d-4c8c-a3da-7b17586b77ca/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-12-13 19:29:50,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:29:50,080 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:29:50,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50 WrapperNode [2022-12-13 19:29:50,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:29:50,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:29:50,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:29:50,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:29:50,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,113 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-12-13 19:29:50,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:29:50,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:29:50,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:29:50,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:29:50,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:29:50,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:29:50,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:29:50,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:29:50,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (1/1) ... [2022-12-13 19:29:50,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:29:50,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:29:50,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:29:50,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afb7c32-710d-4c8c-a3da-7b17586b77ca/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:29:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:29:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:29:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:29:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:29:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 19:29:50,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 19:29:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 19:29:50,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 19:29:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 19:29:50,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 19:29:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 19:29:50,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 19:29:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:29:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 19:29:50,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 19:29:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-13 19:29:50,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-13 19:29:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:29:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:29:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:29:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:29:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:29:50,197 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:29:50,298 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:29:50,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:29:50,625 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:29:50,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:29:50,715 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:29:50,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:29:50 BoogieIcfgContainer [2022-12-13 19:29:50,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:29:50,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:29:50,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:29:50,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:29:50,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:29:49" (1/3) ... [2022-12-13 19:29:50,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f23b996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:29:50, skipping insertion in model container [2022-12-13 19:29:50,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:29:50" (2/3) ... [2022-12-13 19:29:50,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f23b996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:29:50, skipping insertion in model container [2022-12-13 19:29:50,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:29:50" (3/3) ... [2022-12-13 19:29:50,727 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-12-13 19:29:50,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:29:50,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-13 19:29:50,747 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:29:50,826 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-12-13 19:29:50,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 233 places, 216 transitions, 480 flow [2022-12-13 19:29:50,947 INFO L130 PetriNetUnfolder]: 2/210 cut-off events. [2022-12-13 19:29:50,947 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:29:50,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 210 events. 2/210 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 161 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-12-13 19:29:50,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 216 transitions, 480 flow [2022-12-13 19:29:50,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 205 transitions, 446 flow [2022-12-13 19:29:50,961 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:29:50,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 205 transitions, 446 flow [2022-12-13 19:29:50,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 205 transitions, 446 flow [2022-12-13 19:29:50,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 205 transitions, 446 flow [2022-12-13 19:29:51,015 INFO L130 PetriNetUnfolder]: 2/205 cut-off events. [2022-12-13 19:29:51,015 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:29:51,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 205 events. 2/205 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 162 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-12-13 19:29:51,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 3930 [2022-12-13 19:29:59,878 INFO L134 LiptonReduction]: Checked pairs total: 22505 [2022-12-13 19:29:59,878 INFO L136 LiptonReduction]: Total number of compositions: 174 [2022-12-13 19:29:59,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:29:59,892 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;@3e8b2c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:29:59,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-12-13 19:29:59,893 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 19:29:59,893 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:29:59,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:29:59,894 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:29:59,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:29:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:29:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash 857, now seen corresponding path program 1 times [2022-12-13 19:29:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:29:59,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675942510] [2022-12-13 19:29:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:29:59,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:29:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:29:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:29:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:29:59,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675942510] [2022-12-13 19:29:59,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675942510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:29:59,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:29:59,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:29:59,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84585660] [2022-12-13 19:29:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:29:59,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:29:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:29:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:29:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:29:59,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 390 [2022-12-13 19:30:00,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:00,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:00,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 390 [2022-12-13 19:30:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:08,055 INFO L130 PetriNetUnfolder]: 107865/140634 cut-off events. [2022-12-13 19:30:08,055 INFO L131 PetriNetUnfolder]: For 3076/3076 co-relation queries the response was YES. [2022-12-13 19:30:08,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279901 conditions, 140634 events. 107865/140634 cut-off events. For 3076/3076 co-relation queries the response was YES. Maximal size of possible extension queue 5163. Compared 888716 event pairs, 107865 based on Foata normal form. 0/126625 useless extension candidates. Maximal degree in co-relation 229374. Up to 135165 conditions per place. [2022-12-13 19:30:08,805 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 65 selfloop transitions, 0 changer transitions 0/72 dead transitions. [2022-12-13 19:30:08,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 72 transitions, 310 flow [2022-12-13 19:30:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:30:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:30:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 434 transitions. [2022-12-13 19:30:08,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5564102564102564 [2022-12-13 19:30:08,820 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 434 transitions. [2022-12-13 19:30:08,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 434 transitions. [2022-12-13 19:30:08,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:08,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 434 transitions. [2022-12-13 19:30:08,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 217.0) internal successors, (434), 2 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:08,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:08,832 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:08,833 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 186 flow. Second operand 2 states and 434 transitions. [2022-12-13 19:30:08,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 72 transitions, 310 flow [2022-12-13 19:30:09,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-13 19:30:09,323 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 156 flow [2022-12-13 19:30:09,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2022-12-13 19:30:09,327 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2022-12-13 19:30:09,327 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 156 flow [2022-12-13 19:30:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.5) internal successors, (367), 2 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:09,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:09,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:30:09,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:30:09,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 842174, now seen corresponding path program 1 times [2022-12-13 19:30:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:09,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801058421] [2022-12-13 19:30:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:09,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801058421] [2022-12-13 19:30:09,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801058421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:09,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:09,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:30:09,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580293698] [2022-12-13 19:30:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:09,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:09,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 390 [2022-12-13 19:30:09,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:09,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:09,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 390 [2022-12-13 19:30:09,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:16,478 INFO L130 PetriNetUnfolder]: 104022/135761 cut-off events. [2022-12-13 19:30:16,478 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:30:16,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267422 conditions, 135761 events. 104022/135761 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5105. Compared 857985 event pairs, 104022 based on Foata normal form. 0/122780 useless extension candidates. Maximal degree in co-relation 267419. Up to 130293 conditions per place. [2022-12-13 19:30:17,209 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 62 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2022-12-13 19:30:17,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 70 transitions, 278 flow [2022-12-13 19:30:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:30:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2022-12-13 19:30:17,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5119658119658119 [2022-12-13 19:30:17,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2022-12-13 19:30:17,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2022-12-13 19:30:17,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:17,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2022-12-13 19:30:17,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:17,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:17,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:17,217 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 156 flow. Second operand 3 states and 599 transitions. [2022-12-13 19:30:17,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 70 transitions, 278 flow [2022-12-13 19:30:17,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 70 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:30:17,219 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 154 flow [2022-12-13 19:30:17,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2022-12-13 19:30:17,220 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2022-12-13 19:30:17,220 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 154 flow [2022-12-13 19:30:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:17,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:17,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:30:17,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:30:17,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:17,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 842175, now seen corresponding path program 1 times [2022-12-13 19:30:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:17,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993892763] [2022-12-13 19:30:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:17,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:17,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:17,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993892763] [2022-12-13 19:30:17,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993892763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:17,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:17,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:30:17,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826543224] [2022-12-13 19:30:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:17,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:17,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:17,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:17,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:17,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 390 [2022-12-13 19:30:17,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:17,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:17,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 390 [2022-12-13 19:30:17,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:23,816 INFO L130 PetriNetUnfolder]: 100179/130888 cut-off events. [2022-12-13 19:30:23,816 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:30:23,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257680 conditions, 130888 events. 100179/130888 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 827484 event pairs, 100179 based on Foata normal form. 0/118935 useless extension candidates. Maximal degree in co-relation 257676. Up to 125422 conditions per place. [2022-12-13 19:30:24,352 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 60 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-12-13 19:30:24,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 272 flow [2022-12-13 19:30:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:30:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2022-12-13 19:30:24,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4897435897435897 [2022-12-13 19:30:24,355 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2022-12-13 19:30:24,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2022-12-13 19:30:24,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:24,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2022-12-13 19:30:24,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:24,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:24,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:24,360 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 154 flow. Second operand 3 states and 573 transitions. [2022-12-13 19:30:24,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 272 flow [2022-12-13 19:30:24,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:30:24,362 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 151 flow [2022-12-13 19:30:24,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2022-12-13 19:30:24,363 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -15 predicate places. [2022-12-13 19:30:24,363 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 151 flow [2022-12-13 19:30:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:24,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:24,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:30:24,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:30:24,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash 809348950, now seen corresponding path program 1 times [2022-12-13 19:30:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:24,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993555715] [2022-12-13 19:30:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:24,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:24,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993555715] [2022-12-13 19:30:24,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993555715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:24,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:24,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:30:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862865718] [2022-12-13 19:30:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:30:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:24,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:30:24,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:30:24,695 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 390 [2022-12-13 19:30:24,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:24,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:24,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 390 [2022-12-13 19:30:24,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:30,303 INFO L130 PetriNetUnfolder]: 99387/129820 cut-off events. [2022-12-13 19:30:30,303 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:30:30,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255549 conditions, 129820 events. 99387/129820 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 820844 event pairs, 99387 based on Foata normal form. 0/118141 useless extension candidates. Maximal degree in co-relation 255545. Up to 124358 conditions per place. [2022-12-13 19:30:30,864 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 58 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2022-12-13 19:30:30,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 265 flow [2022-12-13 19:30:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:30:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2022-12-13 19:30:30,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2022-12-13 19:30:30,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2022-12-13 19:30:30,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2022-12-13 19:30:30,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:30,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2022-12-13 19:30:30,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:30,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:30,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:30,870 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 151 flow. Second operand 3 states and 565 transitions. [2022-12-13 19:30:30,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 265 flow [2022-12-13 19:30:30,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:30:30,872 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 148 flow [2022-12-13 19:30:30,872 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2022-12-13 19:30:30,873 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2022-12-13 19:30:30,873 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 148 flow [2022-12-13 19:30:30,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:30,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:30,874 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:30:30,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:30:30,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash 809348949, now seen corresponding path program 1 times [2022-12-13 19:30:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083913533] [2022-12-13 19:30:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:30,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:30,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:30,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083913533] [2022-12-13 19:30:30,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083913533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:30,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:30,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:30:30,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922272556] [2022-12-13 19:30:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:30,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:30,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:30,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:31,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 390 [2022-12-13 19:30:31,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:31,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:31,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 390 [2022-12-13 19:30:31,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:36,744 INFO L130 PetriNetUnfolder]: 98595/128752 cut-off events. [2022-12-13 19:30:36,744 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:30:36,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253418 conditions, 128752 events. 98595/128752 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 813838 event pairs, 98595 based on Foata normal form. 0/117347 useless extension candidates. Maximal degree in co-relation 253414. Up to 123294 conditions per place. [2022-12-13 19:30:37,313 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 56 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2022-12-13 19:30:37,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 258 flow [2022-12-13 19:30:37,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:30:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 569 transitions. [2022-12-13 19:30:37,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4863247863247863 [2022-12-13 19:30:37,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 569 transitions. [2022-12-13 19:30:37,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 569 transitions. [2022-12-13 19:30:37,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:37,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 569 transitions. [2022-12-13 19:30:37,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:37,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:37,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:37,319 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 148 flow. Second operand 3 states and 569 transitions. [2022-12-13 19:30:37,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 258 flow [2022-12-13 19:30:37,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 64 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:30:37,321 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 145 flow [2022-12-13 19:30:37,322 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2022-12-13 19:30:37,322 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -17 predicate places. [2022-12-13 19:30:37,322 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 145 flow [2022-12-13 19:30:37,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:37,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:37,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:37,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:30:37,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:37,324 INFO L85 PathProgramCache]: Analyzing trace with hash 395279019, now seen corresponding path program 1 times [2022-12-13 19:30:37,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:37,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350171021] [2022-12-13 19:30:37,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:37,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:37,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350171021] [2022-12-13 19:30:37,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350171021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:37,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:37,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:30:37,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809953793] [2022-12-13 19:30:37,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:37,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:37,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:37,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:37,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:37,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 390 [2022-12-13 19:30:37,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:37,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:37,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 390 [2022-12-13 19:30:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:43,405 INFO L130 PetriNetUnfolder]: 98307/128320 cut-off events. [2022-12-13 19:30:43,405 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:30:43,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252571 conditions, 128320 events. 98307/128320 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 811252 event pairs, 98307 based on Foata normal form. 0/117047 useless extension candidates. Maximal degree in co-relation 252567. Up to 122878 conditions per place. [2022-12-13 19:30:43,988 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 54 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2022-12-13 19:30:43,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 62 transitions, 251 flow [2022-12-13 19:30:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:30:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-12-13 19:30:43,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5051282051282051 [2022-12-13 19:30:43,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-12-13 19:30:43,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-12-13 19:30:43,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:43,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-12-13 19:30:43,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:43,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:43,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:43,994 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 145 flow. Second operand 3 states and 591 transitions. [2022-12-13 19:30:43,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 62 transitions, 251 flow [2022-12-13 19:30:43,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 62 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:30:43,996 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 142 flow [2022-12-13 19:30:43,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2022-12-13 19:30:43,997 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -18 predicate places. [2022-12-13 19:30:43,997 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 142 flow [2022-12-13 19:30:43,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:43,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:43,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:43,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:30:43,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:43,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:43,998 INFO L85 PathProgramCache]: Analyzing trace with hash 395279018, now seen corresponding path program 1 times [2022-12-13 19:30:43,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:43,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217253452] [2022-12-13 19:30:43,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:43,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:44,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:44,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217253452] [2022-12-13 19:30:44,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217253452] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:44,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:44,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:30:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349866321] [2022-12-13 19:30:44,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:44,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:44,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:44,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:44,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 390 [2022-12-13 19:30:44,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:44,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:44,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 390 [2022-12-13 19:30:44,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:49,904 INFO L130 PetriNetUnfolder]: 98019/127888 cut-off events. [2022-12-13 19:30:49,904 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:30:50,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251724 conditions, 127888 events. 98019/127888 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5070. Compared 808388 event pairs, 98019 based on Foata normal form. 0/116747 useless extension candidates. Maximal degree in co-relation 251720. Up to 122462 conditions per place. [2022-12-13 19:30:50,505 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 52 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2022-12-13 19:30:50,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 60 transitions, 244 flow [2022-12-13 19:30:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:30:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2022-12-13 19:30:50,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2022-12-13 19:30:50,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2022-12-13 19:30:50,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2022-12-13 19:30:50,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:50,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2022-12-13 19:30:50,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:50,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:50,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:50,511 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 142 flow. Second operand 3 states and 565 transitions. [2022-12-13 19:30:50,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 60 transitions, 244 flow [2022-12-13 19:30:50,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:30:50,514 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 139 flow [2022-12-13 19:30:50,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2022-12-13 19:30:50,514 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -19 predicate places. [2022-12-13 19:30:50,515 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 139 flow [2022-12-13 19:30:50,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:50,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:50,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:50,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:30:50,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:50,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1906034038, now seen corresponding path program 1 times [2022-12-13 19:30:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:50,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869764439] [2022-12-13 19:30:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:50,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:50,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:50,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869764439] [2022-12-13 19:30:50,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869764439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:50,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:50,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:30:50,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213902319] [2022-12-13 19:30:50,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:30:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:30:50,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:30:50,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 390 [2022-12-13 19:30:50,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:50,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:50,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 390 [2022-12-13 19:30:50,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:30:56,567 INFO L130 PetriNetUnfolder]: 97227/126760 cut-off events. [2022-12-13 19:30:56,567 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:30:56,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249533 conditions, 126760 events. 97227/126760 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5061. Compared 799575 event pairs, 97227 based on Foata normal form. 0/115891 useless extension candidates. Maximal degree in co-relation 249529. Up to 121398 conditions per place. [2022-12-13 19:30:57,340 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 50 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2022-12-13 19:30:57,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 58 transitions, 237 flow [2022-12-13 19:30:57,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:30:57,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:30:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2022-12-13 19:30:57,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47606837606837604 [2022-12-13 19:30:57,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2022-12-13 19:30:57,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2022-12-13 19:30:57,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:30:57,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2022-12-13 19:30:57,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:57,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:57,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:57,345 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 139 flow. Second operand 3 states and 557 transitions. [2022-12-13 19:30:57,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 58 transitions, 237 flow [2022-12-13 19:30:57,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:30:57,347 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 136 flow [2022-12-13 19:30:57,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2022-12-13 19:30:57,347 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -20 predicate places. [2022-12-13 19:30:57,347 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 136 flow [2022-12-13 19:30:57,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:57,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:30:57,348 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:30:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:30:57,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:30:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:30:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1906034037, now seen corresponding path program 1 times [2022-12-13 19:30:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:30:57,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542464448] [2022-12-13 19:30:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:30:57,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:30:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:30:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:30:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:30:57,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542464448] [2022-12-13 19:30:57,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542464448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:30:57,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:30:57,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:30:57,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38176834] [2022-12-13 19:30:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:30:57,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:30:57,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:30:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:30:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:30:57,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 390 [2022-12-13 19:30:57,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:30:57,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:30:57,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 390 [2022-12-13 19:30:57,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:03,171 INFO L130 PetriNetUnfolder]: 96435/125632 cut-off events. [2022-12-13 19:31:03,171 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:31:03,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247342 conditions, 125632 events. 96435/125632 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5052. Compared 791011 event pairs, 96435 based on Foata normal form. 0/115035 useless extension candidates. Maximal degree in co-relation 247338. Up to 120334 conditions per place. [2022-12-13 19:31:03,842 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 48 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-12-13 19:31:03,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 56 transitions, 230 flow [2022-12-13 19:31:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2022-12-13 19:31:03,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4794871794871795 [2022-12-13 19:31:03,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2022-12-13 19:31:03,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2022-12-13 19:31:03,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:03,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2022-12-13 19:31:03,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:03,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:03,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:03,848 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 136 flow. Second operand 3 states and 561 transitions. [2022-12-13 19:31:03,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 56 transitions, 230 flow [2022-12-13 19:31:03,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:03,849 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 133 flow [2022-12-13 19:31:03,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2022-12-13 19:31:03,850 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -21 predicate places. [2022-12-13 19:31:03,850 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 133 flow [2022-12-13 19:31:03,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:03,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:03,850 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:03,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:31:03,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:31:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:03,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2042661147, now seen corresponding path program 1 times [2022-12-13 19:31:03,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:03,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994776407] [2022-12-13 19:31:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:03,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:03,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:03,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994776407] [2022-12-13 19:31:03,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994776407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:03,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:03,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:31:03,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557888123] [2022-12-13 19:31:03,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:03,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:03,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 390 [2022-12-13 19:31:03,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:03,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:03,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 390 [2022-12-13 19:31:03,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:09,509 INFO L130 PetriNetUnfolder]: 92592/120505 cut-off events. [2022-12-13 19:31:09,509 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:31:09,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237345 conditions, 120505 events. 92592/120505 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 4870. Compared 753503 event pairs, 92592 based on Foata normal form. 0/110936 useless extension candidates. Maximal degree in co-relation 237341. Up to 115463 conditions per place. [2022-12-13 19:31:10,072 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 46 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-12-13 19:31:10,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 54 transitions, 223 flow [2022-12-13 19:31:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2022-12-13 19:31:10,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2022-12-13 19:31:10,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2022-12-13 19:31:10,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2022-12-13 19:31:10,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:10,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2022-12-13 19:31:10,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:10,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:10,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:10,078 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 133 flow. Second operand 3 states and 559 transitions. [2022-12-13 19:31:10,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 54 transitions, 223 flow [2022-12-13 19:31:10,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:10,080 INFO L231 Difference]: Finished difference. Result has 72 places, 54 transitions, 130 flow [2022-12-13 19:31:10,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=72, PETRI_TRANSITIONS=54} [2022-12-13 19:31:10,080 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -22 predicate places. [2022-12-13 19:31:10,081 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 54 transitions, 130 flow [2022-12-13 19:31:10,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:10,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:10,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:10,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:31:10,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:31:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2042661146, now seen corresponding path program 1 times [2022-12-13 19:31:10,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:10,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216415119] [2022-12-13 19:31:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:10,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:10,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216415119] [2022-12-13 19:31:10,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216415119] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:10,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:10,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:31:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655527156] [2022-12-13 19:31:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:10,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:10,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:10,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:10,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:10,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 390 [2022-12-13 19:31:10,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 54 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:10,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:10,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 390 [2022-12-13 19:31:10,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:16,183 INFO L130 PetriNetUnfolder]: 88749/115378 cut-off events. [2022-12-13 19:31:16,183 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:31:16,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227348 conditions, 115378 events. 88749/115378 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 4706. Compared 716354 event pairs, 88749 based on Foata normal form. 0/106837 useless extension candidates. Maximal degree in co-relation 227344. Up to 110592 conditions per place. [2022-12-13 19:31:16,891 INFO L137 encePairwiseOnDemand]: 387/390 looper letters, 44 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-12-13 19:31:16,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 52 transitions, 216 flow [2022-12-13 19:31:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2022-12-13 19:31:16,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4965811965811966 [2022-12-13 19:31:16,893 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2022-12-13 19:31:16,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2022-12-13 19:31:16,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:16,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2022-12-13 19:31:16,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:16,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:16,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:16,896 INFO L175 Difference]: Start difference. First operand has 72 places, 54 transitions, 130 flow. Second operand 3 states and 581 transitions. [2022-12-13 19:31:16,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 52 transitions, 216 flow [2022-12-13 19:31:16,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 52 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:16,897 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 127 flow [2022-12-13 19:31:16,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2022-12-13 19:31:16,898 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2022-12-13 19:31:16,898 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 127 flow [2022-12-13 19:31:16,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:16,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:16,899 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:16,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:31:16,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:31:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:16,899 INFO L85 PathProgramCache]: Analyzing trace with hash 197326874, now seen corresponding path program 1 times [2022-12-13 19:31:16,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:16,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648720275] [2022-12-13 19:31:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:16,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:17,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:17,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:17,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648720275] [2022-12-13 19:31:17,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648720275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:17,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:17,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:31:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058524965] [2022-12-13 19:31:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:17,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:31:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:17,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:31:17,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:31:17,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 390 [2022-12-13 19:31:17,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:17,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:17,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 390 [2022-12-13 19:31:17,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:22,310 INFO L130 PetriNetUnfolder]: 70317/91826 cut-off events. [2022-12-13 19:31:22,311 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:31:22,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181269 conditions, 91826 events. 70317/91826 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 3635. Compared 561269 event pairs, 70317 based on Foata normal form. 0/87381 useless extension candidates. Maximal degree in co-relation 181265. Up to 88064 conditions per place. [2022-12-13 19:31:22,840 INFO L137 encePairwiseOnDemand]: 388/390 looper letters, 43 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-12-13 19:31:22,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 51 transitions, 213 flow [2022-12-13 19:31:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 537 transitions. [2022-12-13 19:31:22,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2022-12-13 19:31:22,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 537 transitions. [2022-12-13 19:31:22,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 537 transitions. [2022-12-13 19:31:22,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:22,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 537 transitions. [2022-12-13 19:31:22,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:22,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:22,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:22,847 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 127 flow. Second operand 3 states and 537 transitions. [2022-12-13 19:31:22,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 51 transitions, 213 flow [2022-12-13 19:31:22,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 51 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:22,849 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 126 flow [2022-12-13 19:31:22,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2022-12-13 19:31:22,849 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2022-12-13 19:31:22,850 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 126 flow [2022-12-13 19:31:22,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:22,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:22,850 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:31:22,851 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:31:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 197326873, now seen corresponding path program 1 times [2022-12-13 19:31:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:22,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751185429] [2022-12-13 19:31:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:22,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:23,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:23,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751185429] [2022-12-13 19:31:23,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751185429] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:23,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:23,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:31:23,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025927466] [2022-12-13 19:31:23,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:23,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:31:23,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:31:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:31:23,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 390 [2022-12-13 19:31:23,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 151.625) internal successors, (1213), 8 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:23,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:23,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 390 [2022-12-13 19:31:23,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:26,668 INFO L130 PetriNetUnfolder]: 51885/68274 cut-off events. [2022-12-13 19:31:26,668 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES. [2022-12-13 19:31:26,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135190 conditions, 68274 events. 51885/68274 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 2580. Compared 409743 event pairs, 51885 based on Foata normal form. 0/67925 useless extension candidates. Maximal degree in co-relation 135186. Up to 65536 conditions per place. [2022-12-13 19:31:27,019 INFO L137 encePairwiseOnDemand]: 388/390 looper letters, 42 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2022-12-13 19:31:27,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 210 flow [2022-12-13 19:31:27,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-12-13 19:31:27,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2022-12-13 19:31:27,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-12-13 19:31:27,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-12-13 19:31:27,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:27,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-12-13 19:31:27,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:27,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:27,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 390.0) internal successors, (1560), 4 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:27,025 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 126 flow. Second operand 3 states and 494 transitions. [2022-12-13 19:31:27,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 210 flow [2022-12-13 19:31:27,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:27,026 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 125 flow [2022-12-13 19:31:27,026 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2022-12-13 19:31:27,027 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2022-12-13 19:31:27,027 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 125 flow [2022-12-13 19:31:27,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 151.625) internal successors, (1213), 8 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:27,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:27,027 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:27,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:31:27,028 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:31:27,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:27,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1023154038, now seen corresponding path program 1 times [2022-12-13 19:31:27,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:27,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458321367] [2022-12-13 19:31:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:27,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:27,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458321367] [2022-12-13 19:31:27,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458321367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:27,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:27,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:31:27,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054795923] [2022-12-13 19:31:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:27,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:31:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:31:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:31:27,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2022-12-13 19:31:27,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 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) [2022-12-13 19:31:27,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:27,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2022-12-13 19:31:27,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:47,558 INFO L130 PetriNetUnfolder]: 340125/423387 cut-off events. [2022-12-13 19:31:47,559 INFO L131 PetriNetUnfolder]: For 5903/5903 co-relation queries the response was YES. [2022-12-13 19:31:48,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853457 conditions, 423387 events. 340125/423387 cut-off events. For 5903/5903 co-relation queries the response was YES. Maximal size of possible extension queue 7884. Compared 2338310 event pairs, 87704 based on Foata normal form. 1/423388 useless extension candidates. Maximal degree in co-relation 853453. Up to 222239 conditions per place. [2022-12-13 19:31:49,572 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 143 selfloop transitions, 18 changer transitions 17/178 dead transitions. [2022-12-13 19:31:49,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 178 transitions, 761 flow [2022-12-13 19:31:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:31:49,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:31:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2022-12-13 19:31:49,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5175213675213676 [2022-12-13 19:31:49,575 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2022-12-13 19:31:49,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2022-12-13 19:31:49,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:49,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2022-12-13 19:31:49,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:49,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:49,581 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:49,581 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 125 flow. Second operand 6 states and 1211 transitions. [2022-12-13 19:31:49,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 178 transitions, 761 flow [2022-12-13 19:31:49,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 178 transitions, 760 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:49,584 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 246 flow [2022-12-13 19:31:49,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2022-12-13 19:31:49,584 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2022-12-13 19:31:49,585 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 246 flow [2022-12-13 19:31:49,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 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) [2022-12-13 19:31:49,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:49,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:49,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:31:49,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:31:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1373269192, now seen corresponding path program 2 times [2022-12-13 19:31:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:49,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779952610] [2022-12-13 19:31:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:49,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:49,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779952610] [2022-12-13 19:31:49,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779952610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:49,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:49,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:31:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922715283] [2022-12-13 19:31:49,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:49,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:31:49,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:31:49,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:31:49,802 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 390 [2022-12-13 19:31:49,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 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) [2022-12-13 19:31:49,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:49,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 390 [2022-12-13 19:31:49,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:58,476 INFO L130 PetriNetUnfolder]: 110776/147821 cut-off events. [2022-12-13 19:31:58,476 INFO L131 PetriNetUnfolder]: For 4512/5018 co-relation queries the response was YES. [2022-12-13 19:31:59,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303395 conditions, 147821 events. 110776/147821 cut-off events. For 4512/5018 co-relation queries the response was YES. Maximal size of possible extension queue 5871. Compared 980234 event pairs, 16644 based on Foata normal form. 1180/139823 useless extension candidates. Maximal degree in co-relation 303388. Up to 115357 conditions per place. [2022-12-13 19:31:59,443 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 126 selfloop transitions, 30 changer transitions 0/184 dead transitions. [2022-12-13 19:31:59,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 184 transitions, 804 flow [2022-12-13 19:31:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:31:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:31:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1383 transitions. [2022-12-13 19:31:59,446 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5065934065934066 [2022-12-13 19:31:59,446 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1383 transitions. [2022-12-13 19:31:59,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1383 transitions. [2022-12-13 19:31:59,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:59,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1383 transitions. [2022-12-13 19:31:59,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 197.57142857142858) internal successors, (1383), 7 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:59,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:59,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:31:59,455 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 246 flow. Second operand 7 states and 1383 transitions. [2022-12-13 19:31:59,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 184 transitions, 804 flow [2022-12-13 19:31:59,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 184 transitions, 796 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:59,517 INFO L231 Difference]: Finished difference. Result has 87 places, 100 transitions, 415 flow [2022-12-13 19:31:59,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=415, PETRI_PLACES=87, PETRI_TRANSITIONS=100} [2022-12-13 19:31:59,518 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, -7 predicate places. [2022-12-13 19:31:59,518 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 100 transitions, 415 flow [2022-12-13 19:31:59,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 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) [2022-12-13 19:31:59,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:59,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:31:59,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:31:59,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:31:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:59,520 INFO L85 PathProgramCache]: Analyzing trace with hash -933603054, now seen corresponding path program 3 times [2022-12-13 19:31:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:59,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742141226] [2022-12-13 19:31:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:59,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:59,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742141226] [2022-12-13 19:31:59,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742141226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:59,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:59,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:31:59,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750702787] [2022-12-13 19:31:59,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:59,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:31:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:59,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:31:59,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:31:59,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 390 [2022-12-13 19:31:59,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 100 transitions, 415 flow. Second operand has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 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) [2022-12-13 19:31:59,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:59,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 390 [2022-12-13 19:31:59,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:09,283 INFO L130 PetriNetUnfolder]: 104316/140769 cut-off events. [2022-12-13 19:32:09,283 INFO L131 PetriNetUnfolder]: For 76542/84308 co-relation queries the response was YES. [2022-12-13 19:32:09,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381618 conditions, 140769 events. 104316/140769 cut-off events. For 76542/84308 co-relation queries the response was YES. Maximal size of possible extension queue 5007. Compared 956823 event pairs, 20442 based on Foata normal form. 3354/135524 useless extension candidates. Maximal degree in co-relation 381607. Up to 109557 conditions per place. [2022-12-13 19:32:10,466 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 122 selfloop transitions, 45 changer transitions 0/195 dead transitions. [2022-12-13 19:32:10,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 195 transitions, 1047 flow [2022-12-13 19:32:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:32:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:32:10,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1377 transitions. [2022-12-13 19:32:10,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5043956043956044 [2022-12-13 19:32:10,469 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1377 transitions. [2022-12-13 19:32:10,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1377 transitions. [2022-12-13 19:32:10,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:10,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1377 transitions. [2022-12-13 19:32:10,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.71428571428572) internal successors, (1377), 7 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:10,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:10,475 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:10,475 INFO L175 Difference]: Start difference. First operand has 87 places, 100 transitions, 415 flow. Second operand 7 states and 1377 transitions. [2022-12-13 19:32:10,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 195 transitions, 1047 flow [2022-12-13 19:32:10,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 195 transitions, 1047 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:32:10,554 INFO L231 Difference]: Finished difference. Result has 95 places, 117 transitions, 610 flow [2022-12-13 19:32:10,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=610, PETRI_PLACES=95, PETRI_TRANSITIONS=117} [2022-12-13 19:32:10,554 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-12-13 19:32:10,554 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 117 transitions, 610 flow [2022-12-13 19:32:10,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 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) [2022-12-13 19:32:10,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:10,555 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:32:10,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:32:10,555 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:32:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1488113622, now seen corresponding path program 4 times [2022-12-13 19:32:10,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:10,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589370987] [2022-12-13 19:32:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589370987] [2022-12-13 19:32:10,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589370987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:10,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:10,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:32:10,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092946285] [2022-12-13 19:32:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:10,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:32:10,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:10,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:32:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:32:10,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 390 [2022-12-13 19:32:10,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 117 transitions, 610 flow. Second operand has 7 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:10,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:10,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 390 [2022-12-13 19:32:10,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:20,616 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([619] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][198], [Black: 317#(and (<= (+ ~m1~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0) (= ~s~0 ~m1~0)), 338#true, 220#L112true, Black: 319#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0)), 42#thread5EXITtrue, Black: 314#(<= (+ ~s~0 1) ~t~0), Black: 312#(= ~t~0 ~s~0), 262#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 86#L93true, 275#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 334#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m3~0)), Black: 332#(and (<= (+ ~m1~0 1) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 1) ~m3~0)), 271#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 15#L52true, 236#true, 250#(and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= 4 (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 296#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 245#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 287#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#t1~0#1.offset|) (or (= |ULTIMATE.start_main_~#t6~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_~#t5~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (or (and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= |ULTIMATE.start_main_~#t1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|))) (or (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|) 4))))), 258#(and (= (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|) 4) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 298#true, 62#L181-4true, 254#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 325#true, 267#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 40#thread2EXITtrue, 310#true, Black: 303#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 300#(= ~b~0 (* (div ~b~0 256) 256)), 241#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), 279#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|)) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 212#L150true]) [2022-12-13 19:32:20,616 INFO L383 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2022-12-13 19:32:20,616 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2022-12-13 19:32:20,616 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2022-12-13 19:32:20,616 INFO L386 tUnfolder$Statistics]: existing Event has 32 ancestors and is cut-off event [2022-12-13 19:32:20,871 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([619] L109-->L112: Formula: (= (ite (= (ite (or (not (= (mod v_~b~0_6 256) 0)) (= v_~x~0_5 1)) 1 0) 0) 0 1) v_~b~0_5) InVars {~b~0=v_~b~0_6, ~x~0=v_~x~0_5} OutVars{~b~0=v_~b~0_5, ~x~0=v_~x~0_5} AuxVars[] AssignedVars[~b~0][198], [Black: 317#(and (<= (+ ~m1~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0) (= ~s~0 ~m1~0)), 338#true, 42#thread5EXITtrue, Black: 319#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0)), 220#L112true, Black: 314#(<= (+ ~s~0 1) ~t~0), Black: 312#(= ~t~0 ~s~0), 262#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 86#L93true, 275#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 334#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m3~0)), Black: 332#(and (<= (+ ~m1~0 1) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 1) ~m3~0)), 271#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 15#L52true, 236#true, 250#(and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= 4 (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 296#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 245#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 92#L182-1true, 287#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#t1~0#1.offset|) (or (= |ULTIMATE.start_main_~#t6~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_~#t5~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (or (and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= |ULTIMATE.start_main_~#t1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|))) (or (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|) 4))))), 258#(and (= (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|) 4) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), 298#true, 325#true, 254#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 267#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 310#true, 40#thread2EXITtrue, Black: 303#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 300#(= ~b~0 (* (div ~b~0 256) 256)), 241#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), 279#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|)) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), 212#L150true]) [2022-12-13 19:32:20,871 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2022-12-13 19:32:20,872 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-12-13 19:32:20,872 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-12-13 19:32:20,872 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-12-13 19:32:21,418 INFO L130 PetriNetUnfolder]: 110532/151155 cut-off events. [2022-12-13 19:32:21,418 INFO L131 PetriNetUnfolder]: For 132713/138610 co-relation queries the response was YES. [2022-12-13 19:32:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439167 conditions, 151155 events. 110532/151155 cut-off events. For 132713/138610 co-relation queries the response was YES. Maximal size of possible extension queue 5383. Compared 1075745 event pairs, 26816 based on Foata normal form. 2568/143379 useless extension candidates. Maximal degree in co-relation 439153. Up to 108573 conditions per place. [2022-12-13 19:32:22,777 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 141 selfloop transitions, 89 changer transitions 0/258 dead transitions. [2022-12-13 19:32:22,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 258 transitions, 1645 flow [2022-12-13 19:32:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:32:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:32:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1770 transitions. [2022-12-13 19:32:22,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5042735042735043 [2022-12-13 19:32:22,782 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1770 transitions. [2022-12-13 19:32:22,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1770 transitions. [2022-12-13 19:32:22,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:22,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1770 transitions. [2022-12-13 19:32:22,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 196.66666666666666) internal successors, (1770), 9 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:22,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:22,788 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 390.0) internal successors, (3900), 10 states have internal predecessors, (3900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:22,788 INFO L175 Difference]: Start difference. First operand has 95 places, 117 transitions, 610 flow. Second operand 9 states and 1770 transitions. [2022-12-13 19:32:22,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 258 transitions, 1645 flow [2022-12-13 19:32:22,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 258 transitions, 1638 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:32:22,934 INFO L231 Difference]: Finished difference. Result has 106 places, 163 transitions, 1156 flow [2022-12-13 19:32:22,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1156, PETRI_PLACES=106, PETRI_TRANSITIONS=163} [2022-12-13 19:32:22,934 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2022-12-13 19:32:22,934 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 163 transitions, 1156 flow [2022-12-13 19:32:22,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 182.14285714285714) internal successors, (1275), 7 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:22,935 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:22,935 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:32:22,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:32:22,935 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:32:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash 245379048, now seen corresponding path program 5 times [2022-12-13 19:32:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:22,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552334367] [2022-12-13 19:32:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:22,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:23,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:23,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552334367] [2022-12-13 19:32:23,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552334367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:23,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:23,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:32:23,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076067291] [2022-12-13 19:32:23,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:23,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:32:23,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:23,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:32:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:32:23,198 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 390 [2022-12-13 19:32:23,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 163 transitions, 1156 flow. Second operand has 9 states, 9 states have (on average 179.77777777777777) internal successors, (1618), 9 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:23,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:23,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 390 [2022-12-13 19:32:23,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:32:52,037 INFO L130 PetriNetUnfolder]: 243684/342605 cut-off events. [2022-12-13 19:32:52,037 INFO L131 PetriNetUnfolder]: For 437015/441445 co-relation queries the response was YES. [2022-12-13 19:32:53,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041886 conditions, 342605 events. 243684/342605 cut-off events. For 437015/441445 co-relation queries the response was YES. Maximal size of possible extension queue 14778. Compared 2843752 event pairs, 52077 based on Foata normal form. 1876/321056 useless extension candidates. Maximal degree in co-relation 1041867. Up to 91597 conditions per place. [2022-12-13 19:32:55,431 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 211 selfloop transitions, 258 changer transitions 0/497 dead transitions. [2022-12-13 19:32:55,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 497 transitions, 3998 flow [2022-12-13 19:32:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:32:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 19:32:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2571 transitions. [2022-12-13 19:32:55,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5071005917159763 [2022-12-13 19:32:55,442 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2571 transitions. [2022-12-13 19:32:55,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2571 transitions. [2022-12-13 19:32:55,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:32:55,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2571 transitions. [2022-12-13 19:32:55,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 197.76923076923077) internal successors, (2571), 13 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:55,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:55,455 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:55,455 INFO L175 Difference]: Start difference. First operand has 106 places, 163 transitions, 1156 flow. Second operand 13 states and 2571 transitions. [2022-12-13 19:32:55,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 497 transitions, 3998 flow [2022-12-13 19:32:57,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 497 transitions, 3973 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 19:32:57,207 INFO L231 Difference]: Finished difference. Result has 124 places, 337 transitions, 3517 flow [2022-12-13 19:32:57,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3517, PETRI_PLACES=124, PETRI_TRANSITIONS=337} [2022-12-13 19:32:57,208 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 30 predicate places. [2022-12-13 19:32:57,208 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 337 transitions, 3517 flow [2022-12-13 19:32:57,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 179.77777777777777) internal successors, (1618), 9 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:57,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:32:57,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:32:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:32:57,209 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:32:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:32:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1124960304, now seen corresponding path program 6 times [2022-12-13 19:32:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:32:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056824978] [2022-12-13 19:32:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:32:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:32:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:32:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:32:57,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:32:57,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056824978] [2022-12-13 19:32:57,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056824978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:32:57,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:32:57,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:32:57,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653596930] [2022-12-13 19:32:57,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:32:57,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:32:57,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:32:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:32:57,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:32:57,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 390 [2022-12-13 19:32:57,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 337 transitions, 3517 flow. Second operand has 9 states, 9 states have (on average 180.77777777777777) internal successors, (1627), 9 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:32:57,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:32:57,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 390 [2022-12-13 19:32:57,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:33:29,647 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([750] L74-->thread2EXIT: Formula: (and (= (+ v_~s~0_137 1) v_~s~0_136) (= |v_thread2Thread1of1ForFork3_#res#1.base_7| 0) (= |v_thread2Thread1of1ForFork3_#res#1.offset_7| 0)) InVars {~s~0=v_~s~0_137} OutVars{thread2Thread1of1ForFork3_#t~post4#1=|v_thread2Thread1of1ForFork3_#t~post4#1_5|, thread2Thread1of1ForFork3_#res#1.offset=|v_thread2Thread1of1ForFork3_#res#1.offset_7|, thread2Thread1of1ForFork3_#res#1.base=|v_thread2Thread1of1ForFork3_#res#1.base_7|, ~s~0=v_~s~0_136} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_#t~post4#1, thread2Thread1of1ForFork3_#res#1.offset, thread2Thread1of1ForFork3_#res#1.base, ~s~0][334], [Black: 317#(and (<= (+ ~m1~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0) (= ~s~0 ~m1~0)), 338#true, Black: 319#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0)), Black: 314#(<= (+ ~s~0 1) ~t~0), Black: 312#(= ~t~0 ~s~0), 361#(<= (+ 2 ~s~0) ~t~0), 262#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 137#thread4EXITtrue, 86#L93true, 66#L147true, 275#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 334#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m3~0)), Black: 332#(and (<= (+ ~m1~0 1) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 1) ~m3~0)), 271#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 236#true, 250#(and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= 4 (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 296#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 245#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 142#L131true, 287#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#t1~0#1.offset|) (or (= |ULTIMATE.start_main_~#t6~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_~#t5~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (or (and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= |ULTIMATE.start_main_~#t1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|))) (or (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|) 4))))), 258#(and (= (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|) 4) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), Black: 350#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~s~0 0)), Black: 348#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 341#(and (<= (+ ~m1~0 1) ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 342#(and (<= 1 ~t~0) (= ~s~0 0)), 298#true, 62#L181-4true, 254#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 383#true, 325#true, 267#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 310#true, 40#thread2EXITtrue, Black: 303#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 300#(= ~b~0 (* (div ~b~0 256) 256)), 241#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), Black: 368#(and (= ~s~0 ~m1~0) (<= (+ 3 ~s~0) ~t~0)), Black: 362#(<= (+ 3 ~s~0) ~t~0), Black: 372#(and (<= (+ ~s~0 4) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 4) ~m6~0)), Black: 366#(and (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 279#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|)) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), Black: 360#(<= (+ ~s~0 1) ~t~0), 163#thread1EXITtrue, Black: 374#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m6~0))]) [2022-12-13 19:33:29,647 INFO L383 tUnfolder$Statistics]: this new event has 33 ancestors and is cut-off event [2022-12-13 19:33:29,647 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-12-13 19:33:29,647 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-12-13 19:33:29,647 INFO L386 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2022-12-13 19:33:30,631 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([750] L74-->thread2EXIT: Formula: (and (= (+ v_~s~0_137 1) v_~s~0_136) (= |v_thread2Thread1of1ForFork3_#res#1.base_7| 0) (= |v_thread2Thread1of1ForFork3_#res#1.offset_7| 0)) InVars {~s~0=v_~s~0_137} OutVars{thread2Thread1of1ForFork3_#t~post4#1=|v_thread2Thread1of1ForFork3_#t~post4#1_5|, thread2Thread1of1ForFork3_#res#1.offset=|v_thread2Thread1of1ForFork3_#res#1.offset_7|, thread2Thread1of1ForFork3_#res#1.base=|v_thread2Thread1of1ForFork3_#res#1.base_7|, ~s~0=v_~s~0_136} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_#t~post4#1, thread2Thread1of1ForFork3_#res#1.offset, thread2Thread1of1ForFork3_#res#1.base, ~s~0][334], [Black: 317#(and (<= (+ ~m1~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0) (= ~s~0 ~m1~0)), Black: 319#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0)), 338#true, Black: 314#(<= (+ ~s~0 1) ~t~0), 361#(<= (+ 2 ~s~0) ~t~0), Black: 312#(= ~t~0 ~s~0), 262#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 137#thread4EXITtrue, 86#L93true, 66#L147true, 275#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 334#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m3~0)), Black: 332#(and (<= (+ ~m1~0 1) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 1) ~m3~0)), 271#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 236#true, 250#(and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= 4 (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 296#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 245#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 142#L131true, 92#L182-1true, 287#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#t1~0#1.offset|) (or (= |ULTIMATE.start_main_~#t6~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_~#t5~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (or (and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= |ULTIMATE.start_main_~#t1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|))) (or (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|) 4))))), 258#(and (= (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|) 4) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), Black: 350#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~s~0 0)), Black: 348#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 341#(and (<= (+ ~m1~0 1) ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 342#(and (<= 1 ~t~0) (= ~s~0 0)), 298#true, 254#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 383#true, 325#true, 267#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 310#true, 40#thread2EXITtrue, Black: 303#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 300#(= ~b~0 (* (div ~b~0 256) 256)), 241#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), Black: 368#(and (= ~s~0 ~m1~0) (<= (+ 3 ~s~0) ~t~0)), Black: 362#(<= (+ 3 ~s~0) ~t~0), Black: 372#(and (<= (+ ~s~0 4) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 4) ~m6~0)), Black: 366#(and (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 279#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|)) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), Black: 360#(<= (+ ~s~0 1) ~t~0), Black: 374#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m6~0)), 163#thread1EXITtrue]) [2022-12-13 19:33:30,631 INFO L383 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2022-12-13 19:33:30,631 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2022-12-13 19:33:30,632 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2022-12-13 19:33:30,632 INFO L386 tUnfolder$Statistics]: existing Event has 34 ancestors and is cut-off event [2022-12-13 19:33:31,524 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([750] L74-->thread2EXIT: Formula: (and (= (+ v_~s~0_137 1) v_~s~0_136) (= |v_thread2Thread1of1ForFork3_#res#1.base_7| 0) (= |v_thread2Thread1of1ForFork3_#res#1.offset_7| 0)) InVars {~s~0=v_~s~0_137} OutVars{thread2Thread1of1ForFork3_#t~post4#1=|v_thread2Thread1of1ForFork3_#t~post4#1_5|, thread2Thread1of1ForFork3_#res#1.offset=|v_thread2Thread1of1ForFork3_#res#1.offset_7|, thread2Thread1of1ForFork3_#res#1.base=|v_thread2Thread1of1ForFork3_#res#1.base_7|, ~s~0=v_~s~0_136} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_#t~post4#1, thread2Thread1of1ForFork3_#res#1.offset, thread2Thread1of1ForFork3_#res#1.base, ~s~0][334], [Black: 317#(and (<= (+ ~m1~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0) (= ~s~0 ~m1~0)), Black: 319#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0)), 338#true, Black: 314#(<= (+ ~s~0 1) ~t~0), Black: 312#(= ~t~0 ~s~0), 361#(<= (+ 2 ~s~0) ~t~0), 262#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 137#thread4EXITtrue, 86#L93true, 66#L147true, 275#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 334#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m3~0)), Black: 332#(and (<= (+ ~m1~0 1) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 1) ~m3~0)), 271#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 236#true, 250#(and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= 4 (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 296#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 245#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 142#L131true, 287#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#t1~0#1.offset|) (or (= |ULTIMATE.start_main_~#t6~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_~#t5~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (or (and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= |ULTIMATE.start_main_~#t1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|))) (or (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|) 4))))), 258#(and (= (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|) 4) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), Black: 350#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~s~0 0)), Black: 348#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 341#(and (<= (+ ~m1~0 1) ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 342#(and (<= 1 ~t~0) (= ~s~0 0)), 298#true, 16#L182-2true, 254#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 325#true, 383#true, 267#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 310#true, 40#thread2EXITtrue, Black: 303#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 300#(= ~b~0 (* (div ~b~0 256) 256)), 241#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), Black: 368#(and (= ~s~0 ~m1~0) (<= (+ 3 ~s~0) ~t~0)), Black: 362#(<= (+ 3 ~s~0) ~t~0), Black: 372#(and (<= (+ ~s~0 4) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 4) ~m6~0)), Black: 366#(and (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 279#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|)) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), Black: 360#(<= (+ ~s~0 1) ~t~0), Black: 374#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m6~0))]) [2022-12-13 19:33:31,524 INFO L383 tUnfolder$Statistics]: this new event has 35 ancestors and is cut-off event [2022-12-13 19:33:31,524 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-12-13 19:33:31,524 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-12-13 19:33:31,524 INFO L386 tUnfolder$Statistics]: existing Event has 35 ancestors and is cut-off event [2022-12-13 19:33:31,932 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([750] L74-->thread2EXIT: Formula: (and (= (+ v_~s~0_137 1) v_~s~0_136) (= |v_thread2Thread1of1ForFork3_#res#1.base_7| 0) (= |v_thread2Thread1of1ForFork3_#res#1.offset_7| 0)) InVars {~s~0=v_~s~0_137} OutVars{thread2Thread1of1ForFork3_#t~post4#1=|v_thread2Thread1of1ForFork3_#t~post4#1_5|, thread2Thread1of1ForFork3_#res#1.offset=|v_thread2Thread1of1ForFork3_#res#1.offset_7|, thread2Thread1of1ForFork3_#res#1.base=|v_thread2Thread1of1ForFork3_#res#1.base_7|, ~s~0=v_~s~0_136} AuxVars[] AssignedVars[thread2Thread1of1ForFork3_#t~post4#1, thread2Thread1of1ForFork3_#res#1.offset, thread2Thread1of1ForFork3_#res#1.base, ~s~0][334], [Black: 317#(and (<= (+ ~m1~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0) (= ~s~0 ~m1~0)), Black: 319#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m2~0)), 338#true, Black: 314#(<= (+ ~s~0 1) ~t~0), Black: 312#(= ~t~0 ~s~0), 361#(<= (+ 2 ~s~0) ~t~0), 262#(= (select |#valid| |ULTIMATE.start_main_~#t4~0#1.base|) 1), 137#thread4EXITtrue, 86#L93true, 66#L147true, 275#(= (select |#valid| |ULTIMATE.start_main_~#t6~0#1.base|) 1), Black: 334#(and (<= (+ ~s~0 1) ~t~0) (<= (+ ~s~0 1) ~m3~0)), Black: 332#(and (<= (+ ~m1~0 1) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 1) ~m3~0)), 271#(= (select |#valid| |ULTIMATE.start_main_~#t5~0#1.base|) 1), 236#true, 250#(and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= 4 (select |#length| |ULTIMATE.start_main_~#t3~0#1.base|))), 296#(= (select |#valid| |ULTIMATE.start_main_~#t1~0#1.base|) 1), 245#(= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1), 142#L131true, 287#(and (<= (+ |ULTIMATE.start_main_~#t1~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|)) (<= 0 |ULTIMATE.start_main_~#t1~0#1.offset|) (or (= |ULTIMATE.start_main_~#t6~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_~#t5~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (or (and (= |ULTIMATE.start_main_~#t3~0#1.offset| 0) (<= |ULTIMATE.start_main_~#t1~0#1.offset| 0)) (not (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|))) (or (= |ULTIMATE.start_main_~#t3~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|) (and (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= |ULTIMATE.start_main_~#t4~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#t1~0#1.base|) 4))))), 258#(and (= (select |#length| |ULTIMATE.start_main_~#t4~0#1.base|) 4) (= |ULTIMATE.start_main_~#t4~0#1.offset| 0)), Black: 350#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~s~0 0)), Black: 348#(and (<= 2 ~m4~0) (<= 2 ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 341#(and (<= (+ ~m1~0 1) ~t~0) (= ~m1~0 0) (= ~s~0 0)), Black: 342#(and (<= 1 ~t~0) (= ~s~0 0)), 298#true, 254#(= (select |#valid| |ULTIMATE.start_main_~#t3~0#1.base|) 1), 325#true, 383#true, 267#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t5~0#1.base|)) (= |ULTIMATE.start_main_~#t5~0#1.offset| 0)), 310#true, 40#thread2EXITtrue, Black: 303#(and (<= ~b~0 0) (<= 0 ~b~0)), Black: 300#(= ~b~0 (* (div ~b~0 256) 256)), 179#L183-1true, 241#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t2~0#1.base|)) (= |ULTIMATE.start_main_~#t2~0#1.offset| 0)), Black: 368#(and (= ~s~0 ~m1~0) (<= (+ 3 ~s~0) ~t~0)), Black: 362#(<= (+ 3 ~s~0) ~t~0), Black: 372#(and (<= (+ ~s~0 4) ~t~0) (= ~s~0 ~m1~0) (<= (+ ~s~0 4) ~m6~0)), Black: 366#(and (= ~s~0 ~m1~0) (<= (+ 2 ~s~0) ~t~0)), 279#(and (<= 4 (select |#length| |ULTIMATE.start_main_~#t6~0#1.base|)) (= |ULTIMATE.start_main_~#t6~0#1.offset| 0)), Black: 360#(<= (+ ~s~0 1) ~t~0), Black: 374#(and (<= (+ ~s~0 4) ~t~0) (<= (+ ~s~0 4) ~m6~0))]) [2022-12-13 19:33:31,932 INFO L383 tUnfolder$Statistics]: this new event has 36 ancestors and is cut-off event [2022-12-13 19:33:31,932 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-12-13 19:33:31,932 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-12-13 19:33:31,932 INFO L386 tUnfolder$Statistics]: existing Event has 36 ancestors and is cut-off event [2022-12-13 19:33:32,640 INFO L130 PetriNetUnfolder]: 248461/345499 cut-off events. [2022-12-13 19:33:32,641 INFO L131 PetriNetUnfolder]: For 1170327/1213154 co-relation queries the response was YES. [2022-12-13 19:33:35,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366950 conditions, 345499 events. 248461/345499 cut-off events. For 1170327/1213154 co-relation queries the response was YES. Maximal size of possible extension queue 14856. Compared 2789930 event pairs, 79889 based on Foata normal form. 4102/326797 useless extension candidates. Maximal degree in co-relation 1366923. Up to 260183 conditions per place. [2022-12-13 19:33:36,771 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 232 selfloop transitions, 274 changer transitions 0/534 dead transitions. [2022-12-13 19:33:36,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 534 transitions, 5891 flow [2022-12-13 19:33:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:33:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 19:33:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2556 transitions. [2022-12-13 19:33:36,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5041420118343195 [2022-12-13 19:33:36,776 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2556 transitions. [2022-12-13 19:33:36,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2556 transitions. [2022-12-13 19:33:36,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:33:36,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2556 transitions. [2022-12-13 19:33:36,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 196.6153846153846) internal successors, (2556), 13 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:33:36,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:33:36,792 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 390.0) internal successors, (5460), 14 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:33:36,792 INFO L175 Difference]: Start difference. First operand has 124 places, 337 transitions, 3517 flow. Second operand 13 states and 2556 transitions. [2022-12-13 19:33:36,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 534 transitions, 5891 flow [2022-12-13 19:33:51,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 534 transitions, 5718 flow, removed 80 selfloop flow, removed 2 redundant places. [2022-12-13 19:33:51,385 INFO L231 Difference]: Finished difference. Result has 138 places, 402 transitions, 4884 flow [2022-12-13 19:33:51,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4884, PETRI_PLACES=138, PETRI_TRANSITIONS=402} [2022-12-13 19:33:51,385 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 44 predicate places. [2022-12-13 19:33:51,385 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 402 transitions, 4884 flow [2022-12-13 19:33:51,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.77777777777777) internal successors, (1627), 9 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:33:51,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:33:51,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:33:51,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:33:51,386 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:33:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:33:51,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1384491244, now seen corresponding path program 7 times [2022-12-13 19:33:51,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:33:51,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494088544] [2022-12-13 19:33:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:33:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:33:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:33:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:33:51,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:33:51,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494088544] [2022-12-13 19:33:51,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494088544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:33:51,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:33:51,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:33:51,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974025308] [2022-12-13 19:33:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:33:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:33:51,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:33:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:33:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:33:51,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 390 [2022-12-13 19:33:51,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 402 transitions, 4884 flow. Second operand has 8 states, 8 states have (on average 180.375) internal successors, (1443), 8 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:33:51,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:33:51,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 390 [2022-12-13 19:33:51,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:34:39,342 INFO L130 PetriNetUnfolder]: 307033/433323 cut-off events. [2022-12-13 19:34:39,342 INFO L131 PetriNetUnfolder]: For 1385672/1446550 co-relation queries the response was YES. [2022-12-13 19:34:42,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675427 conditions, 433323 events. 307033/433323 cut-off events. For 1385672/1446550 co-relation queries the response was YES. Maximal size of possible extension queue 17413. Compared 3673011 event pairs, 60404 based on Foata normal form. 10806/417893 useless extension candidates. Maximal degree in co-relation 1675395. Up to 118956 conditions per place. [2022-12-13 19:34:44,393 INFO L137 encePairwiseOnDemand]: 376/390 looper letters, 240 selfloop transitions, 414 changer transitions 0/682 dead transitions. [2022-12-13 19:34:44,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 682 transitions, 8344 flow [2022-12-13 19:34:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:34:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:34:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2182 transitions. [2022-12-13 19:34:44,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5086247086247087 [2022-12-13 19:34:44,398 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2182 transitions. [2022-12-13 19:34:44,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2182 transitions. [2022-12-13 19:34:44,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:34:44,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2182 transitions. [2022-12-13 19:34:44,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 198.36363636363637) internal successors, (2182), 11 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:34:44,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:34:44,405 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 390.0) internal successors, (4680), 12 states have internal predecessors, (4680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:34:44,405 INFO L175 Difference]: Start difference. First operand has 138 places, 402 transitions, 4884 flow. Second operand 11 states and 2182 transitions. [2022-12-13 19:34:44,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 682 transitions, 8344 flow [2022-12-13 19:35:20,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 682 transitions, 8258 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-13 19:35:20,854 INFO L231 Difference]: Finished difference. Result has 148 places, 539 transitions, 8022 flow [2022-12-13 19:35:20,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=4802, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8022, PETRI_PLACES=148, PETRI_TRANSITIONS=539} [2022-12-13 19:35:20,854 INFO L288 CegarLoopForPetriNet]: 94 programPoint places, 54 predicate places. [2022-12-13 19:35:20,854 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 539 transitions, 8022 flow [2022-12-13 19:35:20,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 180.375) internal successors, (1443), 8 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:35:20,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:35:20,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:35:20,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:35:20,855 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 19:35:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:35:20,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1236828822, now seen corresponding path program 8 times [2022-12-13 19:35:20,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:35:20,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350630897] [2022-12-13 19:35:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:35:20,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:35:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:35:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:35:21,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:35:21,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350630897] [2022-12-13 19:35:21,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350630897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:35:21,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:35:21,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:35:21,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849194152] [2022-12-13 19:35:21,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:35:21,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:35:21,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:35:21,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:35:21,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:35:21,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 390 [2022-12-13 19:35:21,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 539 transitions, 8022 flow. Second operand has 8 states, 8 states have (on average 180.375) internal successors, (1443), 8 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:35:21,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:35:21,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 390 [2022-12-13 19:35:21,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand