./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/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_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/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_44a10d3c-989c-4608-b93b-5d64ebd8bffa/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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:41:25,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:41:25,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:41:25,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:41:25,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:41:25,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:41:25,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:41:25,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:41:25,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:41:25,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:41:25,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:41:25,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:41:25,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:41:25,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:41:25,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:41:25,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:41:25,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:41:25,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:41:25,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:41:25,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:41:25,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:41:25,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:41:25,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:41:25,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:41:25,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:41:25,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:41:25,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:41:25,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:41:25,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:41:25,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:41:25,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:41:25,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:41:25,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:41:25,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:41:25,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:41:25,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:41:25,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:41:25,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:41:25,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:41:25,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:41:25,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:41:25,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 12:41:25,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:41:25,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:41:25,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:41:25,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:41:25,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:41:25,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:41:25,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:41:25,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:41:25,984 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:41:25,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:41:25,984 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 12:41:25,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:41:25,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 12:41:25,986 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:41:25,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:41:25,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:41:25,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:41:25,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:41:25,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:41:25,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:41:25,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:41:25,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:41:25,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:41:25,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:41:25,987 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:41:25,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:41:25,988 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:41:25,988 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_44a10d3c-989c-4608-b93b-5d64ebd8bffa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-12-13 12:41:26,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:41:26,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:41:26,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:41:26,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:41:26,175 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:41:26,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-12-13 12:41:28,747 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:41:28,893 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:41:28,893 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-12-13 12:41:28,899 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/data/b89e33db3/32715bbaa33f40b1a66498c1b67a6cd0/FLAG49bbb1d6f [2022-12-13 12:41:28,910 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/data/b89e33db3/32715bbaa33f40b1a66498c1b67a6cd0 [2022-12-13 12:41:28,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:41:28,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:41:28,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:41:28,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:41:28,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:41:28,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:41:28" (1/1) ... [2022-12-13 12:41:28,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5347d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:28, skipping insertion in model container [2022-12-13 12:41:28,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:41:28" (1/1) ... [2022-12-13 12:41:28,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:41:28,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:41:29,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,051 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,052 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,053 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,068 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,075 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_44a10d3c-989c-4608-b93b-5d64ebd8bffa/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-12-13 12:41:29,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:41:29,086 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:41:29,095 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,096 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,097 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,102 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,103 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:41:29,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:41:29,118 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_44a10d3c-989c-4608-b93b-5d64ebd8bffa/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-12-13 12:41:29,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:41:29,130 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:41:29,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29 WrapperNode [2022-12-13 12:41:29,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:41:29,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:41:29,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:41:29,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:41:29,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,163 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 255 [2022-12-13 12:41:29,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:41:29,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:41:29,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:41:29,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:41:29,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,180 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:41:29,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:41:29,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:41:29,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:41:29,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (1/1) ... [2022-12-13 12:41:29,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:41:29,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:41:29,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:41:29,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44a10d3c-989c-4608-b93b-5d64ebd8bffa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 12:41:29,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 12:41:29,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 12:41:29,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:41:29,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:41:29,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:41:29,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:41:29,246 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:41:29,328 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:41:29,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:41:29,609 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:41:29,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:41:29,706 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:41:29,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:41:29 BoogieIcfgContainer [2022-12-13 12:41:29,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:41:29,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:41:29,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:41:29,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:41:29,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:41:28" (1/3) ... [2022-12-13 12:41:29,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0a5ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:41:29, skipping insertion in model container [2022-12-13 12:41:29,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:41:29" (2/3) ... [2022-12-13 12:41:29,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0a5ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:41:29, skipping insertion in model container [2022-12-13 12:41:29,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:41:29" (3/3) ... [2022-12-13 12:41:29,718 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-12-13 12:41:29,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:41:29,737 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 12:41:29,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:41:29,807 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 12:41:29,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 168 transitions, 360 flow [2022-12-13 12:41:29,920 INFO L130 PetriNetUnfolder]: 2/165 cut-off events. [2022-12-13 12:41:29,920 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:41:29,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 2/165 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-12-13 12:41:29,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 168 transitions, 360 flow [2022-12-13 12:41:29,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 160 transitions, 338 flow [2022-12-13 12:41:29,933 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:41:29,940 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 160 transitions, 338 flow [2022-12-13 12:41:29,942 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 160 transitions, 338 flow [2022-12-13 12:41:29,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 160 transitions, 338 flow [2022-12-13 12:41:29,979 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-12-13 12:41:29,980 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 12:41:29,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 2/160 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 155 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-12-13 12:41:29,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2022-12-13 12:41:33,686 INFO L134 LiptonReduction]: Checked pairs total: 22337 [2022-12-13 12:41:33,686 INFO L136 LiptonReduction]: Total number of compositions: 124 [2022-12-13 12:41:33,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:41:33,703 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;@60be5702, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:41:33,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 12:41:33,705 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 12:41:33,705 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:41:33,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:33,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:41:33,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:33,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash 773, now seen corresponding path program 1 times [2022-12-13 12:41:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260263566] [2022-12-13 12:41:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:33,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:33,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:33,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260263566] [2022-12-13 12:41:33,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260263566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:33,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:33,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:41:33,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788021157] [2022-12-13 12:41:33,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:33,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:41:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:33,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:41:33,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:41:33,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 292 [2022-12-13 12:41:33,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:33,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:33,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 292 [2022-12-13 12:41:33,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:34,350 INFO L130 PetriNetUnfolder]: 3906/6589 cut-off events. [2022-12-13 12:41:34,351 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2022-12-13 12:41:34,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12494 conditions, 6589 events. 3906/6589 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 45572 event pairs, 3906 based on Foata normal form. 0/5422 useless extension candidates. Maximal degree in co-relation 11254. Up to 5730 conditions per place. [2022-12-13 12:41:34,382 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 41 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2022-12-13 12:41:34,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 218 flow [2022-12-13 12:41:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:41:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:41:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 332 transitions. [2022-12-13 12:41:34,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5684931506849316 [2022-12-13 12:41:34,393 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 332 transitions. [2022-12-13 12:41:34,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 332 transitions. [2022-12-13 12:41:34,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:34,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 332 transitions. [2022-12-13 12:41:34,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:34,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:34,403 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:34,404 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 142 flow. Second operand 2 states and 332 transitions. [2022-12-13 12:41:34,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 218 flow [2022-12-13 12:41:34,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 12:41:34,410 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 124 flow [2022-12-13 12:41:34,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2022-12-13 12:41:34,414 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2022-12-13 12:41:34,414 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 124 flow [2022-12-13 12:41:34,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:34,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:34,414 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:41:34,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:41:34,415 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:34,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:34,415 INFO L85 PathProgramCache]: Analyzing trace with hash 761611, now seen corresponding path program 1 times [2022-12-13 12:41:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:34,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487799763] [2022-12-13 12:41:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:34,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487799763] [2022-12-13 12:41:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487799763] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:34,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:41:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879190497] [2022-12-13 12:41:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:41:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:41:34,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:41:34,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 292 [2022-12-13 12:41:34,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:34,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:34,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 292 [2022-12-13 12:41:34,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:35,145 INFO L130 PetriNetUnfolder]: 3816/6441 cut-off events. [2022-12-13 12:41:35,145 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 12:41:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12084 conditions, 6441 events. 3816/6441 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 44516 event pairs, 3816 based on Foata normal form. 0/5332 useless extension candidates. Maximal degree in co-relation 12081. Up to 5583 conditions per place. [2022-12-13 12:41:35,171 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 38 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2022-12-13 12:41:35,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 198 flow [2022-12-13 12:41:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2022-12-13 12:41:35,174 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5228310502283106 [2022-12-13 12:41:35,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2022-12-13 12:41:35,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2022-12-13 12:41:35,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:35,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2022-12-13 12:41:35,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,179 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 124 flow. Second operand 3 states and 458 transitions. [2022-12-13 12:41:35,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 198 flow [2022-12-13 12:41:35,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:41:35,180 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 122 flow [2022-12-13 12:41:35,180 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2022-12-13 12:41:35,181 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2022-12-13 12:41:35,181 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 122 flow [2022-12-13 12:41:35,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:35,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 12:41:35,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:41:35,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:35,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash 761612, now seen corresponding path program 1 times [2022-12-13 12:41:35,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:35,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195618098] [2022-12-13 12:41:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:35,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:35,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195618098] [2022-12-13 12:41:35,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195618098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:35,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:35,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:41:35,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971248418] [2022-12-13 12:41:35,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:35,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:41:35,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:35,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:41:35,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:41:35,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 292 [2022-12-13 12:41:35,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:35,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 292 [2022-12-13 12:41:35,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:35,736 INFO L130 PetriNetUnfolder]: 3726/6293 cut-off events. [2022-12-13 12:41:35,736 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 12:41:35,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11792 conditions, 6293 events. 3726/6293 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 43268 event pairs, 3726 based on Foata normal form. 0/5242 useless extension candidates. Maximal degree in co-relation 11788. Up to 5437 conditions per place. [2022-12-13 12:41:35,758 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 36 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2022-12-13 12:41:35,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 192 flow [2022-12-13 12:41:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:35,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2022-12-13 12:41:35,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5034246575342466 [2022-12-13 12:41:35,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2022-12-13 12:41:35,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2022-12-13 12:41:35,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:35,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2022-12-13 12:41:35,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,763 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 122 flow. Second operand 3 states and 441 transitions. [2022-12-13 12:41:35,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 192 flow [2022-12-13 12:41:35,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 55 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:35,764 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 119 flow [2022-12-13 12:41:35,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2022-12-13 12:41:35,765 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2022-12-13 12:41:35,765 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 119 flow [2022-12-13 12:41:35,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:35,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:41:35,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:41:35,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 731926855, now seen corresponding path program 1 times [2022-12-13 12:41:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:35,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291050572] [2022-12-13 12:41:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:35,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:35,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:35,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291050572] [2022-12-13 12:41:35,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291050572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:35,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:35,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:41:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531717287] [2022-12-13 12:41:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:35,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:41:35,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:41:35,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:41:35,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 292 [2022-12-13 12:41:35,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:35,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:35,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 292 [2022-12-13 12:41:35,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:36,299 INFO L130 PetriNetUnfolder]: 3636/6125 cut-off events. [2022-12-13 12:41:36,299 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 12:41:36,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11479 conditions, 6125 events. 3636/6125 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42040 event pairs, 3636 based on Foata normal form. 0/5141 useless extension candidates. Maximal degree in co-relation 11475. Up to 5291 conditions per place. [2022-12-13 12:41:36,322 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 34 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2022-12-13 12:41:36,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 185 flow [2022-12-13 12:41:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2022-12-13 12:41:36,324 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5182648401826484 [2022-12-13 12:41:36,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2022-12-13 12:41:36,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2022-12-13 12:41:36,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:36,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2022-12-13 12:41:36,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,330 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 119 flow. Second operand 3 states and 454 transitions. [2022-12-13 12:41:36,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 185 flow [2022-12-13 12:41:36,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:36,332 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 116 flow [2022-12-13 12:41:36,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2022-12-13 12:41:36,333 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2022-12-13 12:41:36,333 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 116 flow [2022-12-13 12:41:36,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:36,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:41:36,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:41:36,334 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 731926853, now seen corresponding path program 1 times [2022-12-13 12:41:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:36,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359167170] [2022-12-13 12:41:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:36,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:36,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359167170] [2022-12-13 12:41:36,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359167170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:36,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:36,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:41:36,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623291829] [2022-12-13 12:41:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:41:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:41:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:41:36,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 292 [2022-12-13 12:41:36,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:36,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 292 [2022-12-13 12:41:36,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:36,783 INFO L130 PetriNetUnfolder]: 3546/5957 cut-off events. [2022-12-13 12:41:36,783 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 12:41:36,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11166 conditions, 5957 events. 3546/5957 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40697 event pairs, 3546 based on Foata normal form. 0/5040 useless extension candidates. Maximal degree in co-relation 11162. Up to 5145 conditions per place. [2022-12-13 12:41:36,801 INFO L137 encePairwiseOnDemand]: 289/292 looper letters, 32 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-12-13 12:41:36,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 178 flow [2022-12-13 12:41:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2022-12-13 12:41:36,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4988584474885845 [2022-12-13 12:41:36,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2022-12-13 12:41:36,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2022-12-13 12:41:36,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:36,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2022-12-13 12:41:36,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,805 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 116 flow. Second operand 3 states and 437 transitions. [2022-12-13 12:41:36,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 178 flow [2022-12-13 12:41:36,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:36,806 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 113 flow [2022-12-13 12:41:36,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2022-12-13 12:41:36,806 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2022-12-13 12:41:36,806 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 113 flow [2022-12-13 12:41:36,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:36,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:41:36,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:41:36,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:36,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:36,807 INFO L85 PathProgramCache]: Analyzing trace with hash -992910096, now seen corresponding path program 1 times [2022-12-13 12:41:36,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:36,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137705374] [2022-12-13 12:41:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:36,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137705374] [2022-12-13 12:41:36,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137705374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:36,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:36,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:41:36,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296668796] [2022-12-13 12:41:36,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:36,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:41:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:41:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:41:36,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2022-12-13 12:41:36,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:36,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:36,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2022-12-13 12:41:36,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:37,337 INFO L130 PetriNetUnfolder]: 2664/4554 cut-off events. [2022-12-13 12:41:37,337 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 12:41:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8539 conditions, 4554 events. 2664/4554 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30301 event pairs, 2664 based on Foata normal form. 0/4032 useless extension candidates. Maximal degree in co-relation 8535. Up to 3920 conditions per place. [2022-12-13 12:41:37,356 INFO L137 encePairwiseOnDemand]: 290/292 looper letters, 31 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2022-12-13 12:41:37,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 175 flow [2022-12-13 12:41:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2022-12-13 12:41:37,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4691780821917808 [2022-12-13 12:41:37,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2022-12-13 12:41:37,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2022-12-13 12:41:37,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:37,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2022-12-13 12:41:37,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,361 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 113 flow. Second operand 3 states and 411 transitions. [2022-12-13 12:41:37,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 175 flow [2022-12-13 12:41:37,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:37,362 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2022-12-13 12:41:37,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2022-12-13 12:41:37,362 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2022-12-13 12:41:37,362 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2022-12-13 12:41:37,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:37,363 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:41:37,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:41:37,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:37,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash -992910095, now seen corresponding path program 1 times [2022-12-13 12:41:37,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:37,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169270976] [2022-12-13 12:41:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:37,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169270976] [2022-12-13 12:41:37,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169270976] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:37,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:37,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:41:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472538779] [2022-12-13 12:41:37,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:37,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:41:37,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:41:37,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 12:41:37,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:41:37,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:37,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:41:37,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:37,866 INFO L130 PetriNetUnfolder]: 1782/3151 cut-off events. [2022-12-13 12:41:37,866 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-13 12:41:37,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5912 conditions, 3151 events. 1782/3151 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20143 event pairs, 1782 based on Foata normal form. 0/3024 useless extension candidates. Maximal degree in co-relation 5908. Up to 2695 conditions per place. [2022-12-13 12:41:37,874 INFO L137 encePairwiseOnDemand]: 290/292 looper letters, 30 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2022-12-13 12:41:37,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 49 transitions, 172 flow [2022-12-13 12:41:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2022-12-13 12:41:37,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.478310502283105 [2022-12-13 12:41:37,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2022-12-13 12:41:37,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2022-12-13 12:41:37,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:37,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2022-12-13 12:41:37,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,878 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 419 transitions. [2022-12-13 12:41:37,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 49 transitions, 172 flow [2022-12-13 12:41:37,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 49 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:37,879 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 111 flow [2022-12-13 12:41:37,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2022-12-13 12:41:37,880 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2022-12-13 12:41:37,880 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 111 flow [2022-12-13 12:41:37,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:37,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:37,880 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] [2022-12-13 12:41:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:41:37,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:37,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:37,881 INFO L85 PathProgramCache]: Analyzing trace with hash 961560492, now seen corresponding path program 1 times [2022-12-13 12:41:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315873156] [2022-12-13 12:41:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:38,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:38,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315873156] [2022-12-13 12:41:38,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315873156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:38,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:38,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:41:38,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532744602] [2022-12-13 12:41:38,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:38,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:41:38,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:38,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:41:38,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:41:38,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:41:38,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 111 flow. Second operand has 9 states, 9 states have (on average 134.11111111111111) internal successors, (1207), 9 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:38,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:38,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:41:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:39,142 INFO L130 PetriNetUnfolder]: 4870/7530 cut-off events. [2022-12-13 12:41:39,142 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-12-13 12:41:39,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15125 conditions, 7530 events. 4870/7530 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 44476 event pairs, 1571 based on Foata normal form. 1/7470 useless extension candidates. Maximal degree in co-relation 15121. Up to 2087 conditions per place. [2022-12-13 12:41:39,164 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 157 selfloop transitions, 15 changer transitions 25/209 dead transitions. [2022-12-13 12:41:39,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 209 transitions, 851 flow [2022-12-13 12:41:39,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:41:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:41:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1628 transitions. [2022-12-13 12:41:39,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5068493150684932 [2022-12-13 12:41:39,167 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1628 transitions. [2022-12-13 12:41:39,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1628 transitions. [2022-12-13 12:41:39,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:39,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1628 transitions. [2022-12-13 12:41:39,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.0) internal successors, (1628), 11 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:39,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:39,173 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:39,173 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 111 flow. Second operand 11 states and 1628 transitions. [2022-12-13 12:41:39,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 209 transitions, 851 flow [2022-12-13 12:41:39,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 209 transitions, 850 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:39,176 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 202 flow [2022-12-13 12:41:39,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=202, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2022-12-13 12:41:39,176 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2022-12-13 12:41:39,176 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 202 flow [2022-12-13 12:41:39,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.11111111111111) internal successors, (1207), 9 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:39,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:39,177 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] [2022-12-13 12:41:39,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:41:39,177 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1563843168, now seen corresponding path program 2 times [2022-12-13 12:41:39,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:39,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989109453] [2022-12-13 12:41:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:39,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989109453] [2022-12-13 12:41:39,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989109453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:39,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:39,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:41:39,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014272341] [2022-12-13 12:41:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:39,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:41:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:41:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:41:39,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:41:39,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:39,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:39,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:41:39,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:40,402 INFO L130 PetriNetUnfolder]: 4850/8392 cut-off events. [2022-12-13 12:41:40,402 INFO L131 PetriNetUnfolder]: For 104/106 co-relation queries the response was YES. [2022-12-13 12:41:40,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16841 conditions, 8392 events. 4850/8392 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 57181 event pairs, 1537 based on Foata normal form. 124/8292 useless extension candidates. Maximal degree in co-relation 16833. Up to 6119 conditions per place. [2022-12-13 12:41:40,435 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 91 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2022-12-13 12:41:40,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 143 transitions, 592 flow [2022-12-13 12:41:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:41:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:41:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1157 transitions. [2022-12-13 12:41:40,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.495291095890411 [2022-12-13 12:41:40,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1157 transitions. [2022-12-13 12:41:40,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1157 transitions. [2022-12-13 12:41:40,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:40,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1157 transitions. [2022-12-13 12:41:40,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:40,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:40,446 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:40,446 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 202 flow. Second operand 8 states and 1157 transitions. [2022-12-13 12:41:40,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 143 transitions, 592 flow [2022-12-13 12:41:40,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 143 transitions, 590 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:40,452 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 358 flow [2022-12-13 12:41:40,452 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2022-12-13 12:41:40,452 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2022-12-13 12:41:40,453 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 358 flow [2022-12-13 12:41:40,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:40,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:40,453 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] [2022-12-13 12:41:40,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:41:40,454 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2070832960, now seen corresponding path program 3 times [2022-12-13 12:41:40,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:40,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739889761] [2022-12-13 12:41:40,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:40,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:40,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:40,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739889761] [2022-12-13 12:41:40,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739889761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:40,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:40,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:41:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925705558] [2022-12-13 12:41:40,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:40,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:41:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:41:40,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:41:40,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 292 [2022-12-13 12:41:40,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:40,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:40,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 292 [2022-12-13 12:41:40,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:41,223 INFO L130 PetriNetUnfolder]: 4078/7496 cut-off events. [2022-12-13 12:41:41,224 INFO L131 PetriNetUnfolder]: For 2694/2821 co-relation queries the response was YES. [2022-12-13 12:41:41,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 7496 events. 4078/7496 cut-off events. For 2694/2821 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 54256 event pairs, 2683 based on Foata normal form. 158/7364 useless extension candidates. Maximal degree in co-relation 17670. Up to 5098 conditions per place. [2022-12-13 12:41:41,256 INFO L137 encePairwiseOnDemand]: 288/292 looper letters, 73 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2022-12-13 12:41:41,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 115 transitions, 605 flow [2022-12-13 12:41:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-12-13 12:41:41,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5365296803652968 [2022-12-13 12:41:41,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-12-13 12:41:41,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-12-13 12:41:41,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:41,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-12-13 12:41:41,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:41,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:41,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:41,262 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 358 flow. Second operand 3 states and 470 transitions. [2022-12-13 12:41:41,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 115 transitions, 605 flow [2022-12-13 12:41:41,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 605 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:41:41,275 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 368 flow [2022-12-13 12:41:41,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2022-12-13 12:41:41,275 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2022-12-13 12:41:41,276 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 368 flow [2022-12-13 12:41:41,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:41,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:41,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:41,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:41:41,276 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash 840761690, now seen corresponding path program 4 times [2022-12-13 12:41:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:41,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700231978] [2022-12-13 12:41:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:41,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:41,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700231978] [2022-12-13 12:41:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700231978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:41,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:41,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:41:41,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730926129] [2022-12-13 12:41:41,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:41,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:41:41,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:41,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:41:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:41:41,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 292 [2022-12-13 12:41:41,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:41,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:41,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 292 [2022-12-13 12:41:41,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:42,016 INFO L130 PetriNetUnfolder]: 4131/7479 cut-off events. [2022-12-13 12:41:42,016 INFO L131 PetriNetUnfolder]: For 3153/3287 co-relation queries the response was YES. [2022-12-13 12:41:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18288 conditions, 7479 events. 4131/7479 cut-off events. For 3153/3287 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 53684 event pairs, 2725 based on Foata normal form. 139/7289 useless extension candidates. Maximal degree in co-relation 18272. Up to 4840 conditions per place. [2022-12-13 12:41:42,039 INFO L137 encePairwiseOnDemand]: 288/292 looper letters, 70 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2022-12-13 12:41:42,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 600 flow [2022-12-13 12:41:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-12-13 12:41:42,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5365296803652968 [2022-12-13 12:41:42,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-12-13 12:41:42,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-12-13 12:41:42,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:42,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-12-13 12:41:42,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:42,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:42,044 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:42,044 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 368 flow. Second operand 3 states and 470 transitions. [2022-12-13 12:41:42,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 600 flow [2022-12-13 12:41:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 112 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:41:42,052 INFO L231 Difference]: Finished difference. Result has 88 places, 89 transitions, 374 flow [2022-12-13 12:41:42,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=88, PETRI_TRANSITIONS=89} [2022-12-13 12:41:42,052 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2022-12-13 12:41:42,052 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 89 transitions, 374 flow [2022-12-13 12:41:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:42,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:42,053 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] [2022-12-13 12:41:42,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 12:41:42,053 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1131119768, now seen corresponding path program 5 times [2022-12-13 12:41:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:42,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66464362] [2022-12-13 12:41:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:42,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:42,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:42,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:42,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66464362] [2022-12-13 12:41:42,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66464362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:42,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:42,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:41:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953445528] [2022-12-13 12:41:42,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:42,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:41:42,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:42,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:41:42,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:41:42,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:41:42,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 89 transitions, 374 flow. Second operand has 9 states, 9 states have (on average 134.11111111111111) internal successors, (1207), 9 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:42,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:42,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:41:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:43,524 INFO L130 PetriNetUnfolder]: 6816/10976 cut-off events. [2022-12-13 12:41:43,525 INFO L131 PetriNetUnfolder]: For 5405/5586 co-relation queries the response was YES. [2022-12-13 12:41:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29002 conditions, 10976 events. 6816/10976 cut-off events. For 5405/5586 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 69684 event pairs, 2141 based on Foata normal form. 58/10819 useless extension candidates. Maximal degree in co-relation 28985. Up to 3096 conditions per place. [2022-12-13 12:41:43,562 INFO L137 encePairwiseOnDemand]: 284/292 looper letters, 189 selfloop transitions, 21 changer transitions 21/251 dead transitions. [2022-12-13 12:41:43,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 251 transitions, 1374 flow [2022-12-13 12:41:43,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:41:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:41:43,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1624 transitions. [2022-12-13 12:41:43,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5056039850560399 [2022-12-13 12:41:43,565 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1624 transitions. [2022-12-13 12:41:43,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1624 transitions. [2022-12-13 12:41:43,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:43,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1624 transitions. [2022-12-13 12:41:43,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.63636363636363) internal successors, (1624), 11 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:43,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:43,571 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:43,571 INFO L175 Difference]: Start difference. First operand has 88 places, 89 transitions, 374 flow. Second operand 11 states and 1624 transitions. [2022-12-13 12:41:43,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 251 transitions, 1374 flow [2022-12-13 12:41:43,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 251 transitions, 1370 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:41:43,583 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 488 flow [2022-12-13 12:41:43,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=488, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2022-12-13 12:41:43,583 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 29 predicate places. [2022-12-13 12:41:43,584 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 488 flow [2022-12-13 12:41:43,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.11111111111111) internal successors, (1207), 9 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:43,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:43,584 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] [2022-12-13 12:41:43,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:41:43,585 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:43,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1277596536, now seen corresponding path program 6 times [2022-12-13 12:41:43,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:43,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329626244] [2022-12-13 12:41:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:43,907 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 12:41:43,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:43,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329626244] [2022-12-13 12:41:43,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329626244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:43,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:43,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:41:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027041020] [2022-12-13 12:41:43,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:43,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:41:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:41:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:41:43,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:41:43,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 488 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:43,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:43,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:41:43,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:44,858 INFO L130 PetriNetUnfolder]: 5572/10184 cut-off events. [2022-12-13 12:41:44,858 INFO L131 PetriNetUnfolder]: For 6485/6519 co-relation queries the response was YES. [2022-12-13 12:41:44,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27033 conditions, 10184 events. 5572/10184 cut-off events. For 6485/6519 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 74355 event pairs, 2704 based on Foata normal form. 40/9912 useless extension candidates. Maximal degree in co-relation 27011. Up to 7962 conditions per place. [2022-12-13 12:41:44,903 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 89 selfloop transitions, 22 changer transitions 0/149 dead transitions. [2022-12-13 12:41:44,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 149 transitions, 892 flow [2022-12-13 12:41:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:41:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:41:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1002 transitions. [2022-12-13 12:41:44,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49021526418786693 [2022-12-13 12:41:44,906 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1002 transitions. [2022-12-13 12:41:44,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1002 transitions. [2022-12-13 12:41:44,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:44,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1002 transitions. [2022-12-13 12:41:44,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:44,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:44,910 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:44,910 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 488 flow. Second operand 7 states and 1002 transitions. [2022-12-13 12:41:44,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 149 transitions, 892 flow [2022-12-13 12:41:44,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 149 transitions, 875 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 12:41:44,942 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 622 flow [2022-12-13 12:41:44,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2022-12-13 12:41:44,942 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 31 predicate places. [2022-12-13 12:41:44,942 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 622 flow [2022-12-13 12:41:44,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:44,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:44,943 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] [2022-12-13 12:41:44,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:41:44,943 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash -179325674, now seen corresponding path program 7 times [2022-12-13 12:41:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:44,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206385483] [2022-12-13 12:41:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:45,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:45,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206385483] [2022-12-13 12:41:45,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206385483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:45,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:45,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:41:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240435332] [2022-12-13 12:41:45,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:45,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:41:45,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:41:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:41:45,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 292 [2022-12-13 12:41:45,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 113 transitions, 622 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:45,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:45,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 292 [2022-12-13 12:41:45,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:45,882 INFO L130 PetriNetUnfolder]: 4414/8499 cut-off events. [2022-12-13 12:41:45,883 INFO L131 PetriNetUnfolder]: For 7902/8156 co-relation queries the response was YES. [2022-12-13 12:41:45,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23112 conditions, 8499 events. 4414/8499 cut-off events. For 7902/8156 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 64594 event pairs, 3277 based on Foata normal form. 146/8092 useless extension candidates. Maximal degree in co-relation 23089. Up to 6017 conditions per place. [2022-12-13 12:41:45,921 INFO L137 encePairwiseOnDemand]: 288/292 looper letters, 89 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2022-12-13 12:41:45,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 143 transitions, 961 flow [2022-12-13 12:41:45,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:41:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:41:45,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2022-12-13 12:41:45,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5365296803652968 [2022-12-13 12:41:45,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2022-12-13 12:41:45,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2022-12-13 12:41:45,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:45,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2022-12-13 12:41:45,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:45,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:45,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:45,925 INFO L175 Difference]: Start difference. First operand has 103 places, 113 transitions, 622 flow. Second operand 3 states and 470 transitions. [2022-12-13 12:41:45,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 143 transitions, 961 flow [2022-12-13 12:41:45,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 143 transitions, 939 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:45,946 INFO L231 Difference]: Finished difference. Result has 105 places, 113 transitions, 614 flow [2022-12-13 12:41:45,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=105, PETRI_TRANSITIONS=113} [2022-12-13 12:41:45,947 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 33 predicate places. [2022-12-13 12:41:45,947 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 113 transitions, 614 flow [2022-12-13 12:41:45,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:45,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:45,947 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] [2022-12-13 12:41:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:41:45,947 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1576654378, now seen corresponding path program 8 times [2022-12-13 12:41:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:45,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904339222] [2022-12-13 12:41:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:46,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904339222] [2022-12-13 12:41:46,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904339222] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:46,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:46,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:41:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559073256] [2022-12-13 12:41:46,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:41:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:46,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:41:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:41:46,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:41:46,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 113 transitions, 614 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:46,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:46,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:41:46,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:47,486 INFO L130 PetriNetUnfolder]: 6342/11832 cut-off events. [2022-12-13 12:41:47,486 INFO L131 PetriNetUnfolder]: For 11693/11915 co-relation queries the response was YES. [2022-12-13 12:41:47,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33384 conditions, 11832 events. 6342/11832 cut-off events. For 11693/11915 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 90781 event pairs, 3035 based on Foata normal form. 171/11598 useless extension candidates. Maximal degree in co-relation 33359. Up to 8388 conditions per place. [2022-12-13 12:41:47,548 INFO L137 encePairwiseOnDemand]: 283/292 looper letters, 112 selfloop transitions, 24 changer transitions 0/178 dead transitions. [2022-12-13 12:41:47,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 178 transitions, 1121 flow [2022-12-13 12:41:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:41:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:41:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1017 transitions. [2022-12-13 12:41:47,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49755381604696675 [2022-12-13 12:41:47,550 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1017 transitions. [2022-12-13 12:41:47,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1017 transitions. [2022-12-13 12:41:47,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:47,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1017 transitions. [2022-12-13 12:41:47,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.28571428571428) internal successors, (1017), 7 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:47,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:47,554 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:47,554 INFO L175 Difference]: Start difference. First operand has 105 places, 113 transitions, 614 flow. Second operand 7 states and 1017 transitions. [2022-12-13 12:41:47,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 178 transitions, 1121 flow [2022-12-13 12:41:47,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 178 transitions, 1117 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:41:47,588 INFO L231 Difference]: Finished difference. Result has 111 places, 122 transitions, 748 flow [2022-12-13 12:41:47,588 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=748, PETRI_PLACES=111, PETRI_TRANSITIONS=122} [2022-12-13 12:41:47,589 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 39 predicate places. [2022-12-13 12:41:47,589 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 122 transitions, 748 flow [2022-12-13 12:41:47,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:47,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:47,589 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] [2022-12-13 12:41:47,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 12:41:47,590 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:47,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:47,590 INFO L85 PathProgramCache]: Analyzing trace with hash -777409452, now seen corresponding path program 9 times [2022-12-13 12:41:47,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:47,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29680306] [2022-12-13 12:41:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:47,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:47,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:47,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29680306] [2022-12-13 12:41:47,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29680306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:47,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:47,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:41:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445126459] [2022-12-13 12:41:47,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:47,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:41:47,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:47,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:41:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:41:47,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2022-12-13 12:41:47,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 122 transitions, 748 flow. Second operand has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:47,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:47,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2022-12-13 12:41:47,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:49,189 INFO L130 PetriNetUnfolder]: 6941/12883 cut-off events. [2022-12-13 12:41:49,189 INFO L131 PetriNetUnfolder]: For 19101/19281 co-relation queries the response was YES. [2022-12-13 12:41:49,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39300 conditions, 12883 events. 6941/12883 cut-off events. For 19101/19281 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 101579 event pairs, 2788 based on Foata normal form. 156/12629 useless extension candidates. Maximal degree in co-relation 39273. Up to 8216 conditions per place. [2022-12-13 12:41:49,239 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 118 selfloop transitions, 17 changer transitions 1/179 dead transitions. [2022-12-13 12:41:49,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 179 transitions, 1259 flow [2022-12-13 12:41:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:41:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:41:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 890 transitions. [2022-12-13 12:41:49,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5079908675799086 [2022-12-13 12:41:49,241 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 890 transitions. [2022-12-13 12:41:49,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 890 transitions. [2022-12-13 12:41:49,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:49,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 890 transitions. [2022-12-13 12:41:49,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:49,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:49,244 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:49,244 INFO L175 Difference]: Start difference. First operand has 111 places, 122 transitions, 748 flow. Second operand 6 states and 890 transitions. [2022-12-13 12:41:49,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 179 transitions, 1259 flow [2022-12-13 12:41:49,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 179 transitions, 1240 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 12:41:49,280 INFO L231 Difference]: Finished difference. Result has 116 places, 128 transitions, 814 flow [2022-12-13 12:41:49,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=814, PETRI_PLACES=116, PETRI_TRANSITIONS=128} [2022-12-13 12:41:49,281 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 44 predicate places. [2022-12-13 12:41:49,281 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 128 transitions, 814 flow [2022-12-13 12:41:49,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:49,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:49,281 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] [2022-12-13 12:41:49,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 12:41:49,281 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:49,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1411973856, now seen corresponding path program 10 times [2022-12-13 12:41:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:49,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854499803] [2022-12-13 12:41:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:49,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:49,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854499803] [2022-12-13 12:41:49,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854499803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:49,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:49,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:41:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328833859] [2022-12-13 12:41:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:49,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:41:49,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:41:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:41:49,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:41:49,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 128 transitions, 814 flow. Second operand has 10 states, 10 states have (on average 132.7) internal successors, (1327), 10 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:49,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:49,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:41:49,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:52,635 INFO L130 PetriNetUnfolder]: 15360/27482 cut-off events. [2022-12-13 12:41:52,635 INFO L131 PetriNetUnfolder]: For 42050/42338 co-relation queries the response was YES. [2022-12-13 12:41:52,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85483 conditions, 27482 events. 15360/27482 cut-off events. For 42050/42338 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 228917 event pairs, 3699 based on Foata normal form. 228/27090 useless extension candidates. Maximal degree in co-relation 85453. Up to 7559 conditions per place. [2022-12-13 12:41:52,786 INFO L137 encePairwiseOnDemand]: 278/292 looper letters, 244 selfloop transitions, 121 changer transitions 3/405 dead transitions. [2022-12-13 12:41:52,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 405 transitions, 2916 flow [2022-12-13 12:41:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 12:41:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 12:41:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2221 transitions. [2022-12-13 12:41:52,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5070776255707763 [2022-12-13 12:41:52,790 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2221 transitions. [2022-12-13 12:41:52,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2221 transitions. [2022-12-13 12:41:52,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:52,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2221 transitions. [2022-12-13 12:41:52,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 148.06666666666666) internal successors, (2221), 15 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:52,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 292.0) internal successors, (4672), 16 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:52,796 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 292.0) internal successors, (4672), 16 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:52,797 INFO L175 Difference]: Start difference. First operand has 116 places, 128 transitions, 814 flow. Second operand 15 states and 2221 transitions. [2022-12-13 12:41:52,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 405 transitions, 2916 flow [2022-12-13 12:41:52,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 405 transitions, 2849 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-12-13 12:41:52,909 INFO L231 Difference]: Finished difference. Result has 141 places, 226 transitions, 1936 flow [2022-12-13 12:41:52,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1936, PETRI_PLACES=141, PETRI_TRANSITIONS=226} [2022-12-13 12:41:52,910 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 69 predicate places. [2022-12-13 12:41:52,910 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 226 transitions, 1936 flow [2022-12-13 12:41:52,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.7) internal successors, (1327), 10 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:52,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:52,910 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:41:52,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:41:52,910 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:52,911 INFO L85 PathProgramCache]: Analyzing trace with hash 301730516, now seen corresponding path program 11 times [2022-12-13 12:41:52,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:52,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651093614] [2022-12-13 12:41:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:52,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:53,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:53,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651093614] [2022-12-13 12:41:53,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651093614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:53,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:53,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:41:53,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600045905] [2022-12-13 12:41:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:53,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:41:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:41:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:41:53,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:41:53,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 226 transitions, 1936 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:53,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:53,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:41:53,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:41:57,261 INFO L130 PetriNetUnfolder]: 15959/29107 cut-off events. [2022-12-13 12:41:57,261 INFO L131 PetriNetUnfolder]: For 90354/91705 co-relation queries the response was YES. [2022-12-13 12:41:57,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107123 conditions, 29107 events. 15959/29107 cut-off events. For 90354/91705 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 250055 event pairs, 6770 based on Foata normal form. 206/28554 useless extension candidates. Maximal degree in co-relation 107079. Up to 21058 conditions per place. [2022-12-13 12:41:57,536 INFO L137 encePairwiseOnDemand]: 282/292 looper letters, 215 selfloop transitions, 39 changer transitions 1/299 dead transitions. [2022-12-13 12:41:57,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 299 transitions, 2927 flow [2022-12-13 12:41:57,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:41:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:41:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1011 transitions. [2022-12-13 12:41:57,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4946183953033268 [2022-12-13 12:41:57,538 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1011 transitions. [2022-12-13 12:41:57,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1011 transitions. [2022-12-13 12:41:57,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:41:57,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1011 transitions. [2022-12-13 12:41:57,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.42857142857142) internal successors, (1011), 7 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:57,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:57,542 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:57,542 INFO L175 Difference]: Start difference. First operand has 141 places, 226 transitions, 1936 flow. Second operand 7 states and 1011 transitions. [2022-12-13 12:41:57,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 299 transitions, 2927 flow [2022-12-13 12:41:57,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 299 transitions, 2836 flow, removed 45 selfloop flow, removed 1 redundant places. [2022-12-13 12:41:57,878 INFO L231 Difference]: Finished difference. Result has 150 places, 246 transitions, 2221 flow [2022-12-13 12:41:57,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2221, PETRI_PLACES=150, PETRI_TRANSITIONS=246} [2022-12-13 12:41:57,879 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 78 predicate places. [2022-12-13 12:41:57,879 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 246 transitions, 2221 flow [2022-12-13 12:41:57,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:57,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:41:57,880 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] [2022-12-13 12:41:57,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:41:57,880 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:41:57,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:41:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 217319770, now seen corresponding path program 12 times [2022-12-13 12:41:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:41:57,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112476901] [2022-12-13 12:41:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:41:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:41:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:41:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:41:58,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:41:58,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112476901] [2022-12-13 12:41:58,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112476901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:41:58,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:41:58,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:41:58,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807397885] [2022-12-13 12:41:58,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:41:58,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:41:58,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:41:58,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:41:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:41:58,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:41:58,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 246 transitions, 2221 flow. Second operand has 9 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:58,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:58,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:41:58,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:42:05,159 INFO L130 PetriNetUnfolder]: 28503/50629 cut-off events. [2022-12-13 12:42:05,159 INFO L131 PetriNetUnfolder]: For 172601/175080 co-relation queries the response was YES. [2022-12-13 12:42:05,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188584 conditions, 50629 events. 28503/50629 cut-off events. For 172601/175080 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 461322 event pairs, 7998 based on Foata normal form. 714/50104 useless extension candidates. Maximal degree in co-relation 188536. Up to 17981 conditions per place. [2022-12-13 12:42:05,677 INFO L137 encePairwiseOnDemand]: 274/292 looper letters, 392 selfloop transitions, 211 changer transitions 13/653 dead transitions. [2022-12-13 12:42:05,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 653 transitions, 6216 flow [2022-12-13 12:42:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 12:42:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 12:42:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2657 transitions. [2022-12-13 12:42:05,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.505517503805175 [2022-12-13 12:42:05,682 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2657 transitions. [2022-12-13 12:42:05,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2657 transitions. [2022-12-13 12:42:05,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:42:05,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2657 transitions. [2022-12-13 12:42:05,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 147.61111111111111) internal successors, (2657), 18 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:05,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 292.0) internal successors, (5548), 19 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:05,688 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 292.0) internal successors, (5548), 19 states have internal predecessors, (5548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:05,689 INFO L175 Difference]: Start difference. First operand has 150 places, 246 transitions, 2221 flow. Second operand 18 states and 2657 transitions. [2022-12-13 12:42:05,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 653 transitions, 6216 flow [2022-12-13 12:42:06,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 653 transitions, 6172 flow, removed 20 selfloop flow, removed 1 redundant places. [2022-12-13 12:42:06,530 INFO L231 Difference]: Finished difference. Result has 181 places, 402 transitions, 4289 flow [2022-12-13 12:42:06,530 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4289, PETRI_PLACES=181, PETRI_TRANSITIONS=402} [2022-12-13 12:42:06,531 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 109 predicate places. [2022-12-13 12:42:06,531 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 402 transitions, 4289 flow [2022-12-13 12:42:06,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:06,531 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:42:06,531 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:06,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:42:06,531 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:42:06,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:42:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1540121646, now seen corresponding path program 13 times [2022-12-13 12:42:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:42:06,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30264488] [2022-12-13 12:42:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:42:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:42:06,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:42:06,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30264488] [2022-12-13 12:42:06,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30264488] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:42:06,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:42:06,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:42:06,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330994279] [2022-12-13 12:42:06,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:42:06,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:42:06,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:42:06,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:42:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:42:06,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:42:06,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 402 transitions, 4289 flow. Second operand has 11 states, 11 states have (on average 133.36363636363637) internal successors, (1467), 11 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:06,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:42:06,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:42:06,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:42:20,171 INFO L130 PetriNetUnfolder]: 45443/80515 cut-off events. [2022-12-13 12:42:20,171 INFO L131 PetriNetUnfolder]: For 486737/491038 co-relation queries the response was YES. [2022-12-13 12:42:20,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355334 conditions, 80515 events. 45443/80515 cut-off events. For 486737/491038 co-relation queries the response was YES. Maximal size of possible extension queue 2689. Compared 784510 event pairs, 14365 based on Foata normal form. 1117/79269 useless extension candidates. Maximal degree in co-relation 355270. Up to 36635 conditions per place. [2022-12-13 12:42:21,119 INFO L137 encePairwiseOnDemand]: 278/292 looper letters, 440 selfloop transitions, 254 changer transitions 3/752 dead transitions. [2022-12-13 12:42:21,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 752 transitions, 8881 flow [2022-12-13 12:42:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 12:42:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 12:42:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2449 transitions. [2022-12-13 12:42:21,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4933521353746978 [2022-12-13 12:42:21,124 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2449 transitions. [2022-12-13 12:42:21,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2449 transitions. [2022-12-13 12:42:21,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:42:21,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2449 transitions. [2022-12-13 12:42:21,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 144.05882352941177) internal successors, (2449), 17 states have internal predecessors, (2449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:21,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 292.0) internal successors, (5256), 18 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:21,134 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 292.0) internal successors, (5256), 18 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:21,134 INFO L175 Difference]: Start difference. First operand has 181 places, 402 transitions, 4289 flow. Second operand 17 states and 2449 transitions. [2022-12-13 12:42:21,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 752 transitions, 8881 flow [2022-12-13 12:42:25,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 752 transitions, 8599 flow, removed 141 selfloop flow, removed 2 redundant places. [2022-12-13 12:42:25,075 INFO L231 Difference]: Finished difference. Result has 204 places, 553 transitions, 6991 flow [2022-12-13 12:42:25,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6991, PETRI_PLACES=204, PETRI_TRANSITIONS=553} [2022-12-13 12:42:25,076 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 132 predicate places. [2022-12-13 12:42:25,076 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 553 transitions, 6991 flow [2022-12-13 12:42:25,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.36363636363637) internal successors, (1467), 11 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:25,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:42:25,077 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] [2022-12-13 12:42:25,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:42:25,077 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:42:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:42:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash -498270354, now seen corresponding path program 14 times [2022-12-13 12:42:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:42:25,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620955311] [2022-12-13 12:42:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:42:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:42:25,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:42:25,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620955311] [2022-12-13 12:42:25,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620955311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:42:25,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:42:25,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:42:25,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517908119] [2022-12-13 12:42:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:42:25,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:42:25,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:42:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:42:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:42:25,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2022-12-13 12:42:25,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 553 transitions, 6991 flow. Second operand has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:25,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:42:25,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2022-12-13 12:42:25,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:42:39,686 INFO L130 PetriNetUnfolder]: 44838/79752 cut-off events. [2022-12-13 12:42:39,686 INFO L131 PetriNetUnfolder]: For 662591/667150 co-relation queries the response was YES. [2022-12-13 12:42:40,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380113 conditions, 79752 events. 44838/79752 cut-off events. For 662591/667150 co-relation queries the response was YES. Maximal size of possible extension queue 2731. Compared 781609 event pairs, 18828 based on Foata normal form. 561/77532 useless extension candidates. Maximal degree in co-relation 380039. Up to 62805 conditions per place. [2022-12-13 12:42:40,570 INFO L137 encePairwiseOnDemand]: 281/292 looper letters, 471 selfloop transitions, 61 changer transitions 19/641 dead transitions. [2022-12-13 12:42:40,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 641 transitions, 8760 flow [2022-12-13 12:42:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:42:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:42:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1181 transitions. [2022-12-13 12:42:40,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5055650684931506 [2022-12-13 12:42:40,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1181 transitions. [2022-12-13 12:42:40,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1181 transitions. [2022-12-13 12:42:40,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:42:40,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1181 transitions. [2022-12-13 12:42:40,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.625) internal successors, (1181), 8 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:40,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:40,576 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:40,576 INFO L175 Difference]: Start difference. First operand has 204 places, 553 transitions, 6991 flow. Second operand 8 states and 1181 transitions. [2022-12-13 12:42:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 641 transitions, 8760 flow [2022-12-13 12:42:45,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 641 transitions, 8329 flow, removed 206 selfloop flow, removed 3 redundant places. [2022-12-13 12:42:45,294 INFO L231 Difference]: Finished difference. Result has 211 places, 571 transitions, 6996 flow [2022-12-13 12:42:45,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=6582, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6996, PETRI_PLACES=211, PETRI_TRANSITIONS=571} [2022-12-13 12:42:45,295 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 139 predicate places. [2022-12-13 12:42:45,295 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 571 transitions, 6996 flow [2022-12-13 12:42:45,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:45,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:42:45,295 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] [2022-12-13 12:42:45,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 12:42:45,296 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:42:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:42:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1290436940, now seen corresponding path program 15 times [2022-12-13 12:42:45,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:42:45,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530391751] [2022-12-13 12:42:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:42:45,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:42:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:42:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:42:45,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:42:45,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530391751] [2022-12-13 12:42:45,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530391751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:42:45,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:42:45,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:42:45,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144142901] [2022-12-13 12:42:45,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:42:45,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:42:45,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:42:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:42:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:42:45,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 292 [2022-12-13 12:42:45,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 571 transitions, 6996 flow. Second operand has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:42:45,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:42:45,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 292 [2022-12-13 12:42:45,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:43:00,493 INFO L130 PetriNetUnfolder]: 46330/82905 cut-off events. [2022-12-13 12:43:00,493 INFO L131 PetriNetUnfolder]: For 677545/681990 co-relation queries the response was YES. [2022-12-13 12:43:01,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394101 conditions, 82905 events. 46330/82905 cut-off events. For 677545/681990 co-relation queries the response was YES. Maximal size of possible extension queue 2836. Compared 822731 event pairs, 19719 based on Foata normal form. 681/80874 useless extension candidates. Maximal degree in co-relation 394025. Up to 59493 conditions per place. [2022-12-13 12:43:01,440 INFO L137 encePairwiseOnDemand]: 280/292 looper letters, 499 selfloop transitions, 81 changer transitions 24/694 dead transitions. [2022-12-13 12:43:01,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 694 transitions, 9234 flow [2022-12-13 12:43:01,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:43:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:43:01,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1462 transitions. [2022-12-13 12:43:01,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5006849315068493 [2022-12-13 12:43:01,442 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1462 transitions. [2022-12-13 12:43:01,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1462 transitions. [2022-12-13 12:43:01,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:43:01,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1462 transitions. [2022-12-13 12:43:01,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.2) internal successors, (1462), 10 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:01,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 292.0) internal successors, (3212), 11 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:01,446 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 292.0) internal successors, (3212), 11 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:01,446 INFO L175 Difference]: Start difference. First operand has 211 places, 571 transitions, 6996 flow. Second operand 10 states and 1462 transitions. [2022-12-13 12:43:01,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 694 transitions, 9234 flow [2022-12-13 12:43:05,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 694 transitions, 9166 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-12-13 12:43:05,958 INFO L231 Difference]: Finished difference. Result has 220 places, 588 transitions, 7463 flow [2022-12-13 12:43:05,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=6934, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7463, PETRI_PLACES=220, PETRI_TRANSITIONS=588} [2022-12-13 12:43:05,959 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 148 predicate places. [2022-12-13 12:43:05,959 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 588 transitions, 7463 flow [2022-12-13 12:43:05,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.88888888888889) internal successors, (1223), 9 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:05,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:43:05,959 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] [2022-12-13 12:43:05,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 12:43:05,959 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:43:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:43:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2129445988, now seen corresponding path program 16 times [2022-12-13 12:43:05,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:43:05,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912846054] [2022-12-13 12:43:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:43:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:43:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:43:06,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:43:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912846054] [2022-12-13 12:43:06,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912846054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:43:06,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:43:06,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:43:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291457081] [2022-12-13 12:43:06,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:43:06,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:43:06,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:43:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:43:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:43:06,235 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:43:06,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 588 transitions, 7463 flow. Second operand has 9 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:06,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:43:06,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:43:06,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:43:24,409 INFO L130 PetriNetUnfolder]: 53256/95880 cut-off events. [2022-12-13 12:43:24,409 INFO L131 PetriNetUnfolder]: For 833064/837570 co-relation queries the response was YES. [2022-12-13 12:43:25,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462018 conditions, 95880 events. 53256/95880 cut-off events. For 833064/837570 co-relation queries the response was YES. Maximal size of possible extension queue 3321. Compared 974729 event pairs, 19576 based on Foata normal form. 868/94639 useless extension candidates. Maximal degree in co-relation 461937. Up to 53560 conditions per place. [2022-12-13 12:43:25,742 INFO L137 encePairwiseOnDemand]: 279/292 looper letters, 561 selfloop transitions, 219 changer transitions 9/826 dead transitions. [2022-12-13 12:43:25,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 826 transitions, 11562 flow [2022-12-13 12:43:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:43:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:43:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1476 transitions. [2022-12-13 12:43:25,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5054794520547945 [2022-12-13 12:43:25,746 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1476 transitions. [2022-12-13 12:43:25,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1476 transitions. [2022-12-13 12:43:25,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:43:25,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1476 transitions. [2022-12-13 12:43:25,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.6) internal successors, (1476), 10 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:25,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 292.0) internal successors, (3212), 11 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:25,752 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 292.0) internal successors, (3212), 11 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:25,752 INFO L175 Difference]: Start difference. First operand has 220 places, 588 transitions, 7463 flow. Second operand 10 states and 1476 transitions. [2022-12-13 12:43:25,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 826 transitions, 11562 flow [2022-12-13 12:43:32,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 826 transitions, 11419 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-12-13 12:43:32,788 INFO L231 Difference]: Finished difference. Result has 228 places, 666 transitions, 9195 flow [2022-12-13 12:43:32,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=7338, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9195, PETRI_PLACES=228, PETRI_TRANSITIONS=666} [2022-12-13 12:43:32,789 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 156 predicate places. [2022-12-13 12:43:32,789 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 666 transitions, 9195 flow [2022-12-13 12:43:32,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:32,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:43:32,789 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] [2022-12-13 12:43:32,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 12:43:32,789 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:43:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:43:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1555497416, now seen corresponding path program 17 times [2022-12-13 12:43:32,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:43:32,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458613803] [2022-12-13 12:43:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:43:32,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:43:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:43:33,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:43:33,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:43:33,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458613803] [2022-12-13 12:43:33,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458613803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:43:33,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:43:33,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:43:33,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433692506] [2022-12-13 12:43:33,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:43:33,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 12:43:33,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:43:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 12:43:33,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 12:43:33,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:43:33,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 666 transitions, 9195 flow. Second operand has 9 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:33,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:43:33,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:43:33,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:43:51,783 INFO L130 PetriNetUnfolder]: 53537/95007 cut-off events. [2022-12-13 12:43:51,783 INFO L131 PetriNetUnfolder]: For 958774/965631 co-relation queries the response was YES. [2022-12-13 12:43:52,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476289 conditions, 95007 events. 53537/95007 cut-off events. For 958774/965631 co-relation queries the response was YES. Maximal size of possible extension queue 3171. Compared 948154 event pairs, 16814 based on Foata normal form. 2965/95702 useless extension candidates. Maximal degree in co-relation 476203. Up to 30703 conditions per place. [2022-12-13 12:43:52,974 INFO L137 encePairwiseOnDemand]: 276/292 looper letters, 489 selfloop transitions, 396 changer transitions 36/958 dead transitions. [2022-12-13 12:43:52,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 958 transitions, 14544 flow [2022-12-13 12:43:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:43:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:43:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1775 transitions. [2022-12-13 12:43:52,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5065639269406392 [2022-12-13 12:43:52,977 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1775 transitions. [2022-12-13 12:43:52,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1775 transitions. [2022-12-13 12:43:52,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:43:52,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1775 transitions. [2022-12-13 12:43:52,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.91666666666666) internal successors, (1775), 12 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:52,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 292.0) internal successors, (3796), 13 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:52,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 292.0) internal successors, (3796), 13 states have internal predecessors, (3796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:43:52,981 INFO L175 Difference]: Start difference. First operand has 228 places, 666 transitions, 9195 flow. Second operand 12 states and 1775 transitions. [2022-12-13 12:43:52,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 958 transitions, 14544 flow [2022-12-13 12:44:01,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 958 transitions, 14402 flow, removed 71 selfloop flow, removed 0 redundant places. [2022-12-13 12:44:01,308 INFO L231 Difference]: Finished difference. Result has 248 places, 742 transitions, 11858 flow [2022-12-13 12:44:01,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=8882, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11858, PETRI_PLACES=248, PETRI_TRANSITIONS=742} [2022-12-13 12:44:01,309 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 176 predicate places. [2022-12-13 12:44:01,309 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 742 transitions, 11858 flow [2022-12-13 12:44:01,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.11111111111111) internal successors, (1198), 9 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:01,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:01,309 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] [2022-12-13 12:44:01,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 12:44:01,310 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:44:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2003893640, now seen corresponding path program 18 times [2022-12-13 12:44:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:01,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550088107] [2022-12-13 12:44:01,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:01,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:44:01,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:01,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550088107] [2022-12-13 12:44:01,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550088107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:01,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:01,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:44:01,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956857273] [2022-12-13 12:44:01,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:01,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:44:01,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:44:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:44:01,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2022-12-13 12:44:01,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 742 transitions, 11858 flow. Second operand has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:01,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:01,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2022-12-13 12:44:01,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:19,580 INFO L130 PetriNetUnfolder]: 45799/82469 cut-off events. [2022-12-13 12:44:19,580 INFO L131 PetriNetUnfolder]: For 1259932/1266812 co-relation queries the response was YES. [2022-12-13 12:44:20,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463116 conditions, 82469 events. 45799/82469 cut-off events. For 1259932/1266812 co-relation queries the response was YES. Maximal size of possible extension queue 2946. Compared 822933 event pairs, 19787 based on Foata normal form. 1953/82286 useless extension candidates. Maximal degree in co-relation 463019. Up to 26343 conditions per place. [2022-12-13 12:44:20,810 INFO L137 encePairwiseOnDemand]: 287/292 looper letters, 432 selfloop transitions, 224 changer transitions 30/787 dead transitions. [2022-12-13 12:44:20,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 787 transitions, 13778 flow [2022-12-13 12:44:20,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 12:44:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 12:44:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-12-13 12:44:20,812 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.510958904109589 [2022-12-13 12:44:20,812 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-12-13 12:44:20,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-12-13 12:44:20,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:20,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-12-13 12:44:20,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:20,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:20,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:20,814 INFO L175 Difference]: Start difference. First operand has 248 places, 742 transitions, 11858 flow. Second operand 5 states and 746 transitions. [2022-12-13 12:44:20,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 787 transitions, 13778 flow [2022-12-13 12:44:29,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 787 transitions, 13527 flow, removed 119 selfloop flow, removed 2 redundant places. [2022-12-13 12:44:29,683 INFO L231 Difference]: Finished difference. Result has 252 places, 709 transitions, 11827 flow [2022-12-13 12:44:29,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=11501, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11827, PETRI_PLACES=252, PETRI_TRANSITIONS=709} [2022-12-13 12:44:29,684 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 180 predicate places. [2022-12-13 12:44:29,684 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 709 transitions, 11827 flow [2022-12-13 12:44:29,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:29,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:44:29,684 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] [2022-12-13 12:44:29,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 12:44:29,684 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:44:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:44:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash 865751170, now seen corresponding path program 19 times [2022-12-13 12:44:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:44:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334839349] [2022-12-13 12:44:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:44:29,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:44:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:44:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:44:29,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:44:29,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334839349] [2022-12-13 12:44:29,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334839349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:44:29,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:44:29,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 12:44:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476921699] [2022-12-13 12:44:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:44:29,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:44:29,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:44:29,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:44:29,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 12:44:29,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:44:29,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 709 transitions, 11827 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:29,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:44:29,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:44:29,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:44:51,114 INFO L130 PetriNetUnfolder]: 51460/94597 cut-off events. [2022-12-13 12:44:51,114 INFO L131 PetriNetUnfolder]: For 1392504/1398083 co-relation queries the response was YES. [2022-12-13 12:44:52,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536025 conditions, 94597 events. 51460/94597 cut-off events. For 1392504/1398083 co-relation queries the response was YES. Maximal size of possible extension queue 3425. Compared 983613 event pairs, 18829 based on Foata normal form. 1684/94924 useless extension candidates. Maximal degree in co-relation 535926. Up to 36708 conditions per place. [2022-12-13 12:44:52,477 INFO L137 encePairwiseOnDemand]: 279/292 looper letters, 626 selfloop transitions, 258 changer transitions 25/964 dead transitions. [2022-12-13 12:44:52,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 964 transitions, 16888 flow [2022-12-13 12:44:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 12:44:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 12:44:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1490 transitions. [2022-12-13 12:44:52,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102739726027398 [2022-12-13 12:44:52,479 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1490 transitions. [2022-12-13 12:44:52,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1490 transitions. [2022-12-13 12:44:52,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:44:52,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1490 transitions. [2022-12-13 12:44:52,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.0) internal successors, (1490), 10 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:52,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 292.0) internal successors, (3212), 11 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:52,484 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 292.0) internal successors, (3212), 11 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:44:52,484 INFO L175 Difference]: Start difference. First operand has 252 places, 709 transitions, 11827 flow. Second operand 10 states and 1490 transitions. [2022-12-13 12:44:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 964 transitions, 16888 flow [2022-12-13 12:45:02,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 964 transitions, 16481 flow, removed 82 selfloop flow, removed 4 redundant places. [2022-12-13 12:45:02,306 INFO L231 Difference]: Finished difference. Result has 264 places, 770 transitions, 13664 flow [2022-12-13 12:45:02,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=11525, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13664, PETRI_PLACES=264, PETRI_TRANSITIONS=770} [2022-12-13 12:45:02,307 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 192 predicate places. [2022-12-13 12:45:02,307 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 770 transitions, 13664 flow [2022-12-13 12:45:02,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:45:02,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:45:02,307 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] [2022-12-13 12:45:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 12:45:02,307 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:45:02,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:45:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash -229430104, now seen corresponding path program 20 times [2022-12-13 12:45:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:45:02,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906345159] [2022-12-13 12:45:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:45:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:45:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:45:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:45:02,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:45:02,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906345159] [2022-12-13 12:45:02,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906345159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:45:02,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:45:02,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 12:45:02,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253042444] [2022-12-13 12:45:02,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:45:02,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:45:02,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:45:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:45:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:45:02,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:45:02,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 770 transitions, 13664 flow. Second operand has 10 states, 10 states have (on average 132.7) internal successors, (1327), 10 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:45:02,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:45:02,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:45:02,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:45:33,837 INFO L130 PetriNetUnfolder]: 66462/120790 cut-off events. [2022-12-13 12:45:33,837 INFO L131 PetriNetUnfolder]: For 1727123/1740283 co-relation queries the response was YES. [2022-12-13 12:45:35,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677342 conditions, 120790 events. 66462/120790 cut-off events. For 1727123/1740283 co-relation queries the response was YES. Maximal size of possible extension queue 4085. Compared 1266305 event pairs, 19441 based on Foata normal form. 5574/124149 useless extension candidates. Maximal degree in co-relation 677236. Up to 27071 conditions per place. [2022-12-13 12:45:35,978 INFO L137 encePairwiseOnDemand]: 277/292 looper letters, 768 selfloop transitions, 619 changer transitions 21/1445 dead transitions. [2022-12-13 12:45:35,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1445 transitions, 26329 flow [2022-12-13 12:45:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 12:45:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 12:45:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3249 transitions. [2022-12-13 12:45:35,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5057596513075965 [2022-12-13 12:45:35,982 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3249 transitions. [2022-12-13 12:45:35,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3249 transitions. [2022-12-13 12:45:35,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:45:35,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3249 transitions. [2022-12-13 12:45:35,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 147.6818181818182) internal successors, (3249), 22 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:45:35,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 292.0) internal successors, (6716), 23 states have internal predecessors, (6716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:45:35,990 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 292.0) internal successors, (6716), 23 states have internal predecessors, (6716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:45:35,990 INFO L175 Difference]: Start difference. First operand has 264 places, 770 transitions, 13664 flow. Second operand 22 states and 3249 transitions. [2022-12-13 12:45:35,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1445 transitions, 26329 flow [2022-12-13 12:45:55,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 1445 transitions, 26169 flow, removed 80 selfloop flow, removed 0 redundant places. [2022-12-13 12:45:55,235 INFO L231 Difference]: Finished difference. Result has 304 places, 1063 transitions, 21753 flow [2022-12-13 12:45:55,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=13566, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=21753, PETRI_PLACES=304, PETRI_TRANSITIONS=1063} [2022-12-13 12:45:55,236 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 232 predicate places. [2022-12-13 12:45:55,236 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1063 transitions, 21753 flow [2022-12-13 12:45:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.7) internal successors, (1327), 10 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:45:55,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:45:55,236 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] [2022-12-13 12:45:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 12:45:55,236 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:45:55,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:45:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash -79464244, now seen corresponding path program 21 times [2022-12-13 12:45:55,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:45:55,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538761540] [2022-12-13 12:45:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:45:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:45:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:45:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:45:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:45:55,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538761540] [2022-12-13 12:45:55,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538761540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:45:55,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:45:55,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:45:55,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647614001] [2022-12-13 12:45:55,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:45:55,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:45:55,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:45:55,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:45:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:45:55,526 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 292 [2022-12-13 12:45:55,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1063 transitions, 21753 flow. Second operand has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:45:55,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:45:55,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 292 [2022-12-13 12:45:55,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:46:37,656 INFO L130 PetriNetUnfolder]: 74075/135990 cut-off events. [2022-12-13 12:46:37,656 INFO L131 PetriNetUnfolder]: For 2748447/2762254 co-relation queries the response was YES. [2022-12-13 12:46:39,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842009 conditions, 135990 events. 74075/135990 cut-off events. For 2748447/2762254 co-relation queries the response was YES. Maximal size of possible extension queue 4874. Compared 1465842 event pairs, 28521 based on Foata normal form. 3603/137141 useless extension candidates. Maximal degree in co-relation 841883. Up to 83013 conditions per place. [2022-12-13 12:46:40,092 INFO L137 encePairwiseOnDemand]: 281/292 looper letters, 953 selfloop transitions, 287 changer transitions 8/1342 dead transitions. [2022-12-13 12:46:40,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1342 transitions, 29105 flow [2022-12-13 12:46:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 12:46:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 12:46:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1609 transitions. [2022-12-13 12:46:40,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.50093399750934 [2022-12-13 12:46:40,094 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1609 transitions. [2022-12-13 12:46:40,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1609 transitions. [2022-12-13 12:46:40,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:46:40,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1609 transitions. [2022-12-13 12:46:40,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.27272727272728) internal successors, (1609), 11 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:46:40,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:46:40,098 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:46:40,098 INFO L175 Difference]: Start difference. First operand has 304 places, 1063 transitions, 21753 flow. Second operand 11 states and 1609 transitions. [2022-12-13 12:46:40,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1342 transitions, 29105 flow [2022-12-13 12:47:24,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1342 transitions, 28448 flow, removed 328 selfloop flow, removed 1 redundant places. [2022-12-13 12:47:24,335 INFO L231 Difference]: Finished difference. Result has 320 places, 1174 transitions, 24963 flow [2022-12-13 12:47:24,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=21092, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24963, PETRI_PLACES=320, PETRI_TRANSITIONS=1174} [2022-12-13 12:47:24,336 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 248 predicate places. [2022-12-13 12:47:24,336 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 1174 transitions, 24963 flow [2022-12-13 12:47:24,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.0) internal successors, (952), 7 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:24,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:24,336 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] [2022-12-13 12:47:24,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 12:47:24,336 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:47:24,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -52581974, now seen corresponding path program 22 times [2022-12-13 12:47:24,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:24,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285950384] [2022-12-13 12:47:24,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:24,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:47:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:47:24,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:47:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285950384] [2022-12-13 12:47:24,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285950384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:47:24,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:47:24,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 12:47:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685526144] [2022-12-13 12:47:24,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:47:24,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:47:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:47:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:47:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:47:24,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2022-12-13 12:47:24,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1174 transitions, 24963 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:24,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:47:24,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2022-12-13 12:47:24,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:48:13,537 INFO L130 PetriNetUnfolder]: 74225/136443 cut-off events. [2022-12-13 12:48:13,537 INFO L131 PetriNetUnfolder]: For 2941583/2957416 co-relation queries the response was YES. [2022-12-13 12:48:15,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860990 conditions, 136443 events. 74225/136443 cut-off events. For 2941583/2957416 co-relation queries the response was YES. Maximal size of possible extension queue 4813. Compared 1475197 event pairs, 37910 based on Foata normal form. 1956/135857 useless extension candidates. Maximal degree in co-relation 860857. Up to 109606 conditions per place. [2022-12-13 12:48:16,105 INFO L137 encePairwiseOnDemand]: 283/292 looper letters, 1074 selfloop transitions, 68 changer transitions 4/1211 dead transitions. [2022-12-13 12:48:16,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1211 transitions, 27476 flow [2022-12-13 12:48:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 12:48:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 12:48:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1010 transitions. [2022-12-13 12:48:16,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49412915851272016 [2022-12-13 12:48:16,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1010 transitions. [2022-12-13 12:48:16,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1010 transitions. [2022-12-13 12:48:16,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:48:16,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1010 transitions. [2022-12-13 12:48:16,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:48:16,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:48:16,110 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:48:16,111 INFO L175 Difference]: Start difference. First operand has 320 places, 1174 transitions, 24963 flow. Second operand 7 states and 1010 transitions. [2022-12-13 12:48:16,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1211 transitions, 27476 flow [2022-12-13 12:49:02,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1211 transitions, 27312 flow, removed 80 selfloop flow, removed 1 redundant places. [2022-12-13 12:49:02,962 INFO L231 Difference]: Finished difference. Result has 326 places, 1166 transitions, 24856 flow [2022-12-13 12:49:02,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=24607, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1096, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24856, PETRI_PLACES=326, PETRI_TRANSITIONS=1166} [2022-12-13 12:49:02,963 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 254 predicate places. [2022-12-13 12:49:02,963 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1166 transitions, 24856 flow [2022-12-13 12:49:02,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:02,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:49:02,963 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] [2022-12-13 12:49:02,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 12:49:02,963 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:49:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:49:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1602882666, now seen corresponding path program 23 times [2022-12-13 12:49:02,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:49:02,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453587973] [2022-12-13 12:49:02,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:49:02,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:49:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:49:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:49:03,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:49:03,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453587973] [2022-12-13 12:49:03,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453587973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:49:03,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:49:03,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 12:49:03,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742925415] [2022-12-13 12:49:03,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:49:03,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 12:49:03,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:49:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 12:49:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 12:49:03,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:49:03,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1166 transitions, 24856 flow. Second operand has 11 states, 11 states have (on average 132.36363636363637) internal successors, (1456), 11 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:03,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:49:03,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:49:03,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:49:53,272 INFO L130 PetriNetUnfolder]: 77694/141896 cut-off events. [2022-12-13 12:49:53,272 INFO L131 PetriNetUnfolder]: For 3095012/3109428 co-relation queries the response was YES. [2022-12-13 12:49:55,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894318 conditions, 141896 events. 77694/141896 cut-off events. For 3095012/3109428 co-relation queries the response was YES. Maximal size of possible extension queue 4883. Compared 1533095 event pairs, 26120 based on Foata normal form. 4520/144272 useless extension candidates. Maximal degree in co-relation 894183. Up to 31581 conditions per place. [2022-12-13 12:49:55,872 INFO L137 encePairwiseOnDemand]: 274/292 looper letters, 778 selfloop transitions, 865 changer transitions 60/1740 dead transitions. [2022-12-13 12:49:55,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 1740 transitions, 37938 flow [2022-12-13 12:49:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 12:49:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 12:49:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3751 transitions. [2022-12-13 12:49:55,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.494072708113804 [2022-12-13 12:49:55,877 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3751 transitions. [2022-12-13 12:49:55,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3751 transitions. [2022-12-13 12:49:55,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:49:55,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3751 transitions. [2022-12-13 12:49:55,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 144.26923076923077) internal successors, (3751), 26 states have internal predecessors, (3751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:55,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 292.0) internal successors, (7884), 27 states have internal predecessors, (7884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:55,886 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 292.0) internal successors, (7884), 27 states have internal predecessors, (7884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:49:55,886 INFO L175 Difference]: Start difference. First operand has 326 places, 1166 transitions, 24856 flow. Second operand 26 states and 3751 transitions. [2022-12-13 12:49:55,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 1740 transitions, 37938 flow [2022-12-13 12:50:41,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1740 transitions, 37744 flow, removed 25 selfloop flow, removed 7 redundant places. [2022-12-13 12:50:41,399 INFO L231 Difference]: Finished difference. Result has 366 places, 1397 transitions, 33411 flow [2022-12-13 12:50:41,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=24248, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=624, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=33411, PETRI_PLACES=366, PETRI_TRANSITIONS=1397} [2022-12-13 12:50:41,400 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 294 predicate places. [2022-12-13 12:50:41,400 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 1397 transitions, 33411 flow [2022-12-13 12:50:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 132.36363636363637) internal successors, (1456), 11 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:41,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:50:41,401 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] [2022-12-13 12:50:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 12:50:41,401 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 12:50:41,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:50:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash 863854698, now seen corresponding path program 24 times [2022-12-13 12:50:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:50:41,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302306277] [2022-12-13 12:50:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:50:41,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:50:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:50:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:50:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:50:41,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302306277] [2022-12-13 12:50:41,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302306277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:50:41,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:50:41,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 12:50:41,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798512352] [2022-12-13 12:50:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:50:41,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 12:50:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:50:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 12:50:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-13 12:50:41,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 292 [2022-12-13 12:50:41,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 1397 transitions, 33411 flow. Second operand has 12 states, 12 states have (on average 132.08333333333334) internal successors, (1585), 12 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:50:41,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:50:41,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 292 [2022-12-13 12:50:41,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:51:38,113 INFO L130 PetriNetUnfolder]: 77493/140639 cut-off events. [2022-12-13 12:51:38,114 INFO L131 PetriNetUnfolder]: For 3716227/3730235 co-relation queries the response was YES. [2022-12-13 12:51:40,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961978 conditions, 140639 events. 77493/140639 cut-off events. For 3716227/3730235 co-relation queries the response was YES. Maximal size of possible extension queue 4754. Compared 1503839 event pairs, 34297 based on Foata normal form. 2454/140216 useless extension candidates. Maximal degree in co-relation 961823. Up to 90001 conditions per place. [2022-12-13 12:51:41,207 INFO L137 encePairwiseOnDemand]: 278/292 looper letters, 1151 selfloop transitions, 363 changer transitions 36/1587 dead transitions. [2022-12-13 12:51:41,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 1587 transitions, 39286 flow [2022-12-13 12:51:41,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:51:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 12:51:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2286 transitions. [2022-12-13 12:51:41,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4892979452054795 [2022-12-13 12:51:41,210 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2286 transitions. [2022-12-13 12:51:41,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2286 transitions. [2022-12-13 12:51:41,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:51:41,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2286 transitions. [2022-12-13 12:51:41,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 142.875) internal successors, (2286), 16 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:41,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 292.0) internal successors, (4964), 17 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:41,216 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 292.0) internal successors, (4964), 17 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:51:41,216 INFO L175 Difference]: Start difference. First operand has 366 places, 1397 transitions, 33411 flow. Second operand 16 states and 2286 transitions. [2022-12-13 12:51:41,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 1587 transitions, 39286 flow