./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/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_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:03:28,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:03:28,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:03:28,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:03:28,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:03:28,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:03:28,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:03:28,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:03:28,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:03:28,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:03:28,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:03:28,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:03:28,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:03:28,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:03:28,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:03:28,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:03:28,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:03:28,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:03:28,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:03:28,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:03:28,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:03:28,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:03:28,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:03:28,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:03:28,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:03:28,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:03:28,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:03:28,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:03:28,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:03:28,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:03:28,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:03:28,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:03:28,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:03:28,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:03:28,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:03:28,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:03:28,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:03:28,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:03:28,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:03:28,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:03:28,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:03:28,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:03:28,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:03:28,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:03:28,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:03:28,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:03:28,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:03:28,882 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:03:28,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:03:28,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:03:28,882 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:03:28,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:03:28,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:03:28,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:03:28,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:03:28,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:03:28,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:03:28,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:03:28,885 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:03:28,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:03:28,885 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:03:28,885 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_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-12-13 22:03:29,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:03:29,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:03:29,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:03:29,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:03:29,087 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:03:29,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-12-13 22:03:31,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:03:31,933 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:03:31,933 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-12-13 22:03:31,939 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/data/39aa851fb/3fa4cbd41c5440cebbc332937c163b98/FLAG4a3e5ba5e [2022-12-13 22:03:31,950 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/data/39aa851fb/3fa4cbd41c5440cebbc332937c163b98 [2022-12-13 22:03:31,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:03:31,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:03:31,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:03:31,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:03:31,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:03:31,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:03:31" (1/1) ... [2022-12-13 22:03:31,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d49b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:31, skipping insertion in model container [2022-12-13 22:03:31,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:03:31" (1/1) ... [2022-12-13 22:03:31,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:03:31,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:03:32,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,130 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_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-12-13 22:03:32,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:03:32,145 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:03:32,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 22:03:32,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 22:03:32,173 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_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-12-13 22:03:32,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:03:32,188 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:03:32,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32 WrapperNode [2022-12-13 22:03:32,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:03:32,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:03:32,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:03:32,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:03:32,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,228 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-12-13 22:03:32,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:03:32,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:03:32,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:03:32,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:03:32,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:03:32,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:03:32,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:03:32,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:03:32,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (1/1) ... [2022-12-13 22:03:32,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:03:32,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:03:32,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:03:32,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:03:32,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:03:32,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 22:03:32,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 22:03:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 22:03:32,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 22:03:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 22:03:32,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 22:03:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 22:03:32,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 22:03:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:03:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:03:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:03:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 22:03:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 22:03:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:03:32,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:03:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:03:32,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:03:32,313 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 22:03:32,408 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:03:32,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:03:32,650 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:03:32,717 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:03:32,717 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:03:32,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:03:32 BoogieIcfgContainer [2022-12-13 22:03:32,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:03:32,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:03:32,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:03:32,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:03:32,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:03:31" (1/3) ... [2022-12-13 22:03:32,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1004a25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:03:32, skipping insertion in model container [2022-12-13 22:03:32,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:32" (2/3) ... [2022-12-13 22:03:32,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1004a25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:03:32, skipping insertion in model container [2022-12-13 22:03:32,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:03:32" (3/3) ... [2022-12-13 22:03:32,728 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-12-13 22:03:32,737 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:03:32,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:03:32,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:03:32,749 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:03:32,811 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 22:03:32,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2022-12-13 22:03:32,906 INFO L130 PetriNetUnfolder]: 2/138 cut-off events. [2022-12-13 22:03:32,906 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 22:03:32,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-12-13 22:03:32,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 142 transitions, 316 flow [2022-12-13 22:03:32,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 274 flow [2022-12-13 22:03:32,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:03:32,928 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 125 transitions, 274 flow [2022-12-13 22:03:32,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 125 transitions, 274 flow [2022-12-13 22:03:32,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 125 transitions, 274 flow [2022-12-13 22:03:32,962 INFO L130 PetriNetUnfolder]: 2/125 cut-off events. [2022-12-13 22:03:32,962 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 22:03:32,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 2/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-12-13 22:03:32,964 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2022-12-13 22:03:36,840 INFO L134 LiptonReduction]: Checked pairs total: 7260 [2022-12-13 22:03:36,840 INFO L136 LiptonReduction]: Total number of compositions: 104 [2022-12-13 22:03:36,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:03:36,855 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@697a7d30, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:03:36,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 22:03:36,860 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-12-13 22:03:36,861 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 22:03:36,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:36,861 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] [2022-12-13 22:03:36,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash 798678638, now seen corresponding path program 1 times [2022-12-13 22:03:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:36,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595791930] [2022-12-13 22:03:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:37,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:37,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595791930] [2022-12-13 22:03:37,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595791930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:37,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:37,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:03:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515237131] [2022-12-13 22:03:37,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:37,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:37,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:37,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:37,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2022-12-13 22:03:37,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 8 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:37,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:37,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2022-12-13 22:03:37,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:39,072 INFO L130 PetriNetUnfolder]: 9301/13074 cut-off events. [2022-12-13 22:03:39,072 INFO L131 PetriNetUnfolder]: For 1184/1184 co-relation queries the response was YES. [2022-12-13 22:03:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27015 conditions, 13074 events. 9301/13074 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 66490 event pairs, 1586 based on Foata normal form. 2/13076 useless extension candidates. Maximal degree in co-relation 26391. Up to 3581 conditions per place. [2022-12-13 22:03:39,116 INFO L137 encePairwiseOnDemand]: 234/246 looper letters, 114 selfloop transitions, 22 changer transitions 27/163 dead transitions. [2022-12-13 22:03:39,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 163 transitions, 742 flow [2022-12-13 22:03:39,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:39,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:03:39,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1110 transitions. [2022-12-13 22:03:39,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5013550135501355 [2022-12-13 22:03:39,130 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1110 transitions. [2022-12-13 22:03:39,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1110 transitions. [2022-12-13 22:03:39,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:39,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1110 transitions. [2022-12-13 22:03:39,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 123.33333333333333) internal successors, (1110), 9 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:39,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:39,147 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:39,148 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 9 states and 1110 transitions. [2022-12-13 22:03:39,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 163 transitions, 742 flow [2022-12-13 22:03:39,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 163 transitions, 682 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 22:03:39,160 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 237 flow [2022-12-13 22:03:39,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2022-12-13 22:03:39,164 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2022-12-13 22:03:39,164 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 237 flow [2022-12-13 22:03:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 109.25) internal successors, (874), 8 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:39,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:39,165 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] [2022-12-13 22:03:39,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:03:39,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:39,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash 990587756, now seen corresponding path program 2 times [2022-12-13 22:03:39,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:39,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918679629] [2022-12-13 22:03:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:39,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:39,322 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 22:03:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:39,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918679629] [2022-12-13 22:03:39,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918679629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:39,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:39,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:03:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634745456] [2022-12-13 22:03:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:39,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:03:39,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:39,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:03:39,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:03:39,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:39,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:39,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:39,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:39,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:39,976 INFO L130 PetriNetUnfolder]: 3448/5357 cut-off events. [2022-12-13 22:03:39,976 INFO L131 PetriNetUnfolder]: For 2052/2146 co-relation queries the response was YES. [2022-12-13 22:03:39,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13044 conditions, 5357 events. 3448/5357 cut-off events. For 2052/2146 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30406 event pairs, 522 based on Foata normal form. 184/5417 useless extension candidates. Maximal degree in co-relation 9773. Up to 3143 conditions per place. [2022-12-13 22:03:40,012 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 85 selfloop transitions, 20 changer transitions 0/129 dead transitions. [2022-12-13 22:03:40,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 662 flow [2022-12-13 22:03:40,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:03:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:03:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 875 transitions. [2022-12-13 22:03:40,015 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.508130081300813 [2022-12-13 22:03:40,015 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 875 transitions. [2022-12-13 22:03:40,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 875 transitions. [2022-12-13 22:03:40,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:40,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 875 transitions. [2022-12-13 22:03:40,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.0) internal successors, (875), 7 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:40,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:40,022 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:40,022 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 237 flow. Second operand 7 states and 875 transitions. [2022-12-13 22:03:40,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 662 flow [2022-12-13 22:03:40,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 129 transitions, 649 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 22:03:40,043 INFO L231 Difference]: Finished difference. Result has 61 places, 74 transitions, 332 flow [2022-12-13 22:03:40,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=61, PETRI_TRANSITIONS=74} [2022-12-13 22:03:40,044 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2022-12-13 22:03:40,044 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 74 transitions, 332 flow [2022-12-13 22:03:40,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:40,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:40,045 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] [2022-12-13 22:03:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:03:40,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 241178236, now seen corresponding path program 3 times [2022-12-13 22:03:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:40,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124846083] [2022-12-13 22:03:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:40,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:40,302 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 22:03:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:40,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124846083] [2022-12-13 22:03:40,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124846083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:40,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:40,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:03:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619539317] [2022-12-13 22:03:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:03:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:03:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:03:40,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:40,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 74 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:40,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:40,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:40,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:41,309 INFO L130 PetriNetUnfolder]: 5936/9743 cut-off events. [2022-12-13 22:03:41,309 INFO L131 PetriNetUnfolder]: For 7548/7952 co-relation queries the response was YES. [2022-12-13 22:03:41,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27788 conditions, 9743 events. 5936/9743 cut-off events. For 7548/7952 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 66802 event pairs, 801 based on Foata normal form. 362/9904 useless extension candidates. Maximal degree in co-relation 17140. Up to 2467 conditions per place. [2022-12-13 22:03:41,362 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 103 selfloop transitions, 51 changer transitions 0/178 dead transitions. [2022-12-13 22:03:41,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 178 transitions, 1013 flow [2022-12-13 22:03:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:03:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1127 transitions. [2022-12-13 22:03:41,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.50903342366757 [2022-12-13 22:03:41,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1127 transitions. [2022-12-13 22:03:41,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1127 transitions. [2022-12-13 22:03:41,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:41,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1127 transitions. [2022-12-13 22:03:41,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.22222222222223) internal successors, (1127), 9 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:41,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:41,372 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:41,372 INFO L175 Difference]: Start difference. First operand has 61 places, 74 transitions, 332 flow. Second operand 9 states and 1127 transitions. [2022-12-13 22:03:41,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 178 transitions, 1013 flow [2022-12-13 22:03:41,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 178 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:03:41,390 INFO L231 Difference]: Finished difference. Result has 72 places, 107 transitions, 676 flow [2022-12-13 22:03:41,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=676, PETRI_PLACES=72, PETRI_TRANSITIONS=107} [2022-12-13 22:03:41,391 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2022-12-13 22:03:41,391 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 107 transitions, 676 flow [2022-12-13 22:03:41,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:41,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:41,392 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] [2022-12-13 22:03:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:03:41,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:41,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:41,393 INFO L85 PathProgramCache]: Analyzing trace with hash -23507076, now seen corresponding path program 4 times [2022-12-13 22:03:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:41,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613826999] [2022-12-13 22:03:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:41,561 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 22:03:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:41,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613826999] [2022-12-13 22:03:41,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613826999] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:41,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:41,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:03:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212345945] [2022-12-13 22:03:41,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:41,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:03:41,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:03:41,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:03:41,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:41,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 107 transitions, 676 flow. Second operand has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:41,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:41,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:41,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:42,444 INFO L130 PetriNetUnfolder]: 5530/9147 cut-off events. [2022-12-13 22:03:42,444 INFO L131 PetriNetUnfolder]: For 20319/21591 co-relation queries the response was YES. [2022-12-13 22:03:42,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32727 conditions, 9147 events. 5530/9147 cut-off events. For 20319/21591 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 62660 event pairs, 775 based on Foata normal form. 422/9422 useless extension candidates. Maximal degree in co-relation 19572. Up to 2436 conditions per place. [2022-12-13 22:03:42,491 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 104 selfloop transitions, 64 changer transitions 6/198 dead transitions. [2022-12-13 22:03:42,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 198 transitions, 1451 flow [2022-12-13 22:03:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:03:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1131 transitions. [2022-12-13 22:03:42,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.510840108401084 [2022-12-13 22:03:42,494 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1131 transitions. [2022-12-13 22:03:42,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1131 transitions. [2022-12-13 22:03:42,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:42,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1131 transitions. [2022-12-13 22:03:42,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.66666666666667) internal successors, (1131), 9 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:42,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:42,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:42,500 INFO L175 Difference]: Start difference. First operand has 72 places, 107 transitions, 676 flow. Second operand 9 states and 1131 transitions. [2022-12-13 22:03:42,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 198 transitions, 1451 flow [2022-12-13 22:03:42,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 198 transitions, 1428 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 22:03:42,561 INFO L231 Difference]: Finished difference. Result has 81 places, 122 transitions, 920 flow [2022-12-13 22:03:42,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=920, PETRI_PLACES=81, PETRI_TRANSITIONS=122} [2022-12-13 22:03:42,562 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2022-12-13 22:03:42,562 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 122 transitions, 920 flow [2022-12-13 22:03:42,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:42,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:42,563 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] [2022-12-13 22:03:42,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 22:03:42,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:42,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1424582562, now seen corresponding path program 5 times [2022-12-13 22:03:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:42,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424555290] [2022-12-13 22:03:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:42,851 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 22:03:42,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:42,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424555290] [2022-12-13 22:03:42,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424555290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:42,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:42,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:03:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232157297] [2022-12-13 22:03:42,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:42,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:03:42,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:03:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:03:42,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2022-12-13 22:03:42,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 122 transitions, 920 flow. Second operand has 9 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:42,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:42,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2022-12-13 22:03:42,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:44,092 INFO L130 PetriNetUnfolder]: 5630/9552 cut-off events. [2022-12-13 22:03:44,092 INFO L131 PetriNetUnfolder]: For 29654/31242 co-relation queries the response was YES. [2022-12-13 22:03:44,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37369 conditions, 9552 events. 5630/9552 cut-off events. For 29654/31242 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 68507 event pairs, 807 based on Foata normal form. 792/10206 useless extension candidates. Maximal degree in co-relation 22221. Up to 2407 conditions per place. [2022-12-13 22:03:44,132 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 128 selfloop transitions, 88 changer transitions 0/240 dead transitions. [2022-12-13 22:03:44,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 240 transitions, 1988 flow [2022-12-13 22:03:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:03:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 22:03:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1348 transitions. [2022-12-13 22:03:44,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49815225424981524 [2022-12-13 22:03:44,135 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1348 transitions. [2022-12-13 22:03:44,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1348 transitions. [2022-12-13 22:03:44,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:44,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1348 transitions. [2022-12-13 22:03:44,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.54545454545455) internal successors, (1348), 11 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:44,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:44,144 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:44,144 INFO L175 Difference]: Start difference. First operand has 81 places, 122 transitions, 920 flow. Second operand 11 states and 1348 transitions. [2022-12-13 22:03:44,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 240 transitions, 1988 flow [2022-12-13 22:03:44,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 240 transitions, 1887 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 22:03:44,220 INFO L231 Difference]: Finished difference. Result has 92 places, 146 transitions, 1314 flow [2022-12-13 22:03:44,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1314, PETRI_PLACES=92, PETRI_TRANSITIONS=146} [2022-12-13 22:03:44,221 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 45 predicate places. [2022-12-13 22:03:44,221 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 146 transitions, 1314 flow [2022-12-13 22:03:44,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.22222222222223) internal successors, (1001), 9 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:44,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:44,221 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] [2022-12-13 22:03:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:03:44,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1328260712, now seen corresponding path program 6 times [2022-12-13 22:03:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:44,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045068188] [2022-12-13 22:03:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:44,396 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 22:03:44,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:44,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045068188] [2022-12-13 22:03:44,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045068188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:44,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:44,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:03:44,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959737368] [2022-12-13 22:03:44,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:44,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:03:44,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:03:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:03:44,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:44,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 146 transitions, 1314 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:44,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:44,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:44,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:45,315 INFO L130 PetriNetUnfolder]: 5216/8922 cut-off events. [2022-12-13 22:03:45,315 INFO L131 PetriNetUnfolder]: For 38448/39630 co-relation queries the response was YES. [2022-12-13 22:03:45,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38450 conditions, 8922 events. 5216/8922 cut-off events. For 38448/39630 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 63180 event pairs, 1213 based on Foata normal form. 438/9242 useless extension candidates. Maximal degree in co-relation 32863. Up to 6147 conditions per place. [2022-12-13 22:03:45,358 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 116 selfloop transitions, 52 changer transitions 4/196 dead transitions. [2022-12-13 22:03:45,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 196 transitions, 1941 flow [2022-12-13 22:03:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:03:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:03:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 869 transitions. [2022-12-13 22:03:45,360 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5046457607433217 [2022-12-13 22:03:45,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 869 transitions. [2022-12-13 22:03:45,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 869 transitions. [2022-12-13 22:03:45,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:45,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 869 transitions. [2022-12-13 22:03:45,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.14285714285714) internal successors, (869), 7 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:45,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:45,364 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:45,364 INFO L175 Difference]: Start difference. First operand has 92 places, 146 transitions, 1314 flow. Second operand 7 states and 869 transitions. [2022-12-13 22:03:45,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 196 transitions, 1941 flow [2022-12-13 22:03:45,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 196 transitions, 1812 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-12-13 22:03:45,433 INFO L231 Difference]: Finished difference. Result has 95 places, 147 transitions, 1375 flow [2022-12-13 22:03:45,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1375, PETRI_PLACES=95, PETRI_TRANSITIONS=147} [2022-12-13 22:03:45,469 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2022-12-13 22:03:45,469 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 147 transitions, 1375 flow [2022-12-13 22:03:45,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:45,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:45,469 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] [2022-12-13 22:03:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:03:45,470 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:45,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash 100143084, now seen corresponding path program 7 times [2022-12-13 22:03:45,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:45,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403496341] [2022-12-13 22:03:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:45,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:45,627 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 22:03:45,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403496341] [2022-12-13 22:03:45,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403496341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:45,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:45,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:03:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542720654] [2022-12-13 22:03:45,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:45,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:03:45,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:45,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:03:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:03:45,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:45,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 147 transitions, 1375 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:45,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:45,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:45,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:46,684 INFO L130 PetriNetUnfolder]: 4647/8144 cut-off events. [2022-12-13 22:03:46,684 INFO L131 PetriNetUnfolder]: For 36926/37862 co-relation queries the response was YES. [2022-12-13 22:03:46,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34517 conditions, 8144 events. 4647/8144 cut-off events. For 36926/37862 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 58664 event pairs, 1241 based on Foata normal form. 368/8363 useless extension candidates. Maximal degree in co-relation 34223. Up to 5834 conditions per place. [2022-12-13 22:03:46,739 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 93 selfloop transitions, 49 changer transitions 14/178 dead transitions. [2022-12-13 22:03:46,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 178 transitions, 1845 flow [2022-12-13 22:03:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:03:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:03:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 857 transitions. [2022-12-13 22:03:46,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49767711962833916 [2022-12-13 22:03:46,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 857 transitions. [2022-12-13 22:03:46,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 857 transitions. [2022-12-13 22:03:46,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:46,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 857 transitions. [2022-12-13 22:03:46,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.42857142857143) internal successors, (857), 7 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:46,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:46,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:46,746 INFO L175 Difference]: Start difference. First operand has 95 places, 147 transitions, 1375 flow. Second operand 7 states and 857 transitions. [2022-12-13 22:03:46,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 178 transitions, 1845 flow [2022-12-13 22:03:46,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 178 transitions, 1783 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 22:03:46,828 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1447 flow [2022-12-13 22:03:46,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1447, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2022-12-13 22:03:46,829 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 51 predicate places. [2022-12-13 22:03:46,829 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1447 flow [2022-12-13 22:03:46,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:46,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:46,829 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] [2022-12-13 22:03:46,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:03:46,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1960046772, now seen corresponding path program 8 times [2022-12-13 22:03:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:46,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798598838] [2022-12-13 22:03:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:46,990 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 22:03:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:46,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798598838] [2022-12-13 22:03:46,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798598838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:46,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:46,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:03:46,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326813924] [2022-12-13 22:03:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:03:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:03:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:03:47,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:47,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1447 flow. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:47,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:47,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:47,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:47,707 INFO L130 PetriNetUnfolder]: 4106/7295 cut-off events. [2022-12-13 22:03:47,707 INFO L131 PetriNetUnfolder]: For 34020/34972 co-relation queries the response was YES. [2022-12-13 22:03:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31247 conditions, 7295 events. 4106/7295 cut-off events. For 34020/34972 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52479 event pairs, 1229 based on Foata normal form. 108/7268 useless extension candidates. Maximal degree in co-relation 31218. Up to 5795 conditions per place. [2022-12-13 22:03:47,743 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 126 selfloop transitions, 19 changer transitions 0/166 dead transitions. [2022-12-13 22:03:47,743 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 166 transitions, 1892 flow [2022-12-13 22:03:47,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:03:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:03:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 612 transitions. [2022-12-13 22:03:47,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4975609756097561 [2022-12-13 22:03:47,745 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 612 transitions. [2022-12-13 22:03:47,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 612 transitions. [2022-12-13 22:03:47,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:47,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 612 transitions. [2022-12-13 22:03:47,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.4) internal successors, (612), 5 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:47,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 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 22:03:47,748 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 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 22:03:47,748 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1447 flow. Second operand 5 states and 612 transitions. [2022-12-13 22:03:47,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 166 transitions, 1892 flow [2022-12-13 22:03:47,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 166 transitions, 1833 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-12-13 22:03:47,818 INFO L231 Difference]: Finished difference. Result has 90 places, 143 transitions, 1477 flow [2022-12-13 22:03:47,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1477, PETRI_PLACES=90, PETRI_TRANSITIONS=143} [2022-12-13 22:03:47,818 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 43 predicate places. [2022-12-13 22:03:47,818 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 143 transitions, 1477 flow [2022-12-13 22:03:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:47,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:47,819 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] [2022-12-13 22:03:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 22:03:47,819 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:47,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:47,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2109556394, now seen corresponding path program 9 times [2022-12-13 22:03:47,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:47,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202242083] [2022-12-13 22:03:47,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:47,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:47,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202242083] [2022-12-13 22:03:47,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202242083] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:47,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:47,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:03:47,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086320144] [2022-12-13 22:03:47,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:47,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:47,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:47,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:47,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:47,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 143 transitions, 1477 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:47,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:47,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:47,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:48,831 INFO L130 PetriNetUnfolder]: 4009/7152 cut-off events. [2022-12-13 22:03:48,832 INFO L131 PetriNetUnfolder]: For 30415/31720 co-relation queries the response was YES. [2022-12-13 22:03:48,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30246 conditions, 7152 events. 4009/7152 cut-off events. For 30415/31720 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 51490 event pairs, 751 based on Foata normal form. 352/7405 useless extension candidates. Maximal degree in co-relation 30218. Up to 3353 conditions per place. [2022-12-13 22:03:48,861 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 117 selfloop transitions, 94 changer transitions 1/233 dead transitions. [2022-12-13 22:03:48,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 233 transitions, 2499 flow [2022-12-13 22:03:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:03:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 22:03:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1346 transitions. [2022-12-13 22:03:48,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49741315594974134 [2022-12-13 22:03:48,864 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1346 transitions. [2022-12-13 22:03:48,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1346 transitions. [2022-12-13 22:03:48,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:48,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1346 transitions. [2022-12-13 22:03:48,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.36363636363636) internal successors, (1346), 11 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:48,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:48,868 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:48,868 INFO L175 Difference]: Start difference. First operand has 90 places, 143 transitions, 1477 flow. Second operand 11 states and 1346 transitions. [2022-12-13 22:03:48,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 233 transitions, 2499 flow [2022-12-13 22:03:48,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 233 transitions, 2479 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:03:48,905 INFO L231 Difference]: Finished difference. Result has 101 places, 169 transitions, 2020 flow [2022-12-13 22:03:48,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2020, PETRI_PLACES=101, PETRI_TRANSITIONS=169} [2022-12-13 22:03:48,905 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2022-12-13 22:03:48,905 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 169 transitions, 2020 flow [2022-12-13 22:03:48,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:48,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:48,906 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] [2022-12-13 22:03:48,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 22:03:48,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1910701994, now seen corresponding path program 10 times [2022-12-13 22:03:48,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:48,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769646387] [2022-12-13 22:03:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:48,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:49,049 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 22:03:49,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:49,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769646387] [2022-12-13 22:03:49,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769646387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:49,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:49,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:03:49,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753328452] [2022-12-13 22:03:49,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:49,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:03:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:03:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:03:49,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2022-12-13 22:03:49,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 169 transitions, 2020 flow. Second operand has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:49,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:49,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2022-12-13 22:03:49,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:50,053 INFO L130 PetriNetUnfolder]: 4782/8137 cut-off events. [2022-12-13 22:03:50,053 INFO L131 PetriNetUnfolder]: For 46295/47494 co-relation queries the response was YES. [2022-12-13 22:03:50,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38371 conditions, 8137 events. 4782/8137 cut-off events. For 46295/47494 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 56591 event pairs, 719 based on Foata normal form. 600/8574 useless extension candidates. Maximal degree in co-relation 38340. Up to 2555 conditions per place. [2022-12-13 22:03:50,094 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 108 selfloop transitions, 123 changer transitions 6/254 dead transitions. [2022-12-13 22:03:50,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 254 transitions, 3009 flow [2022-12-13 22:03:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:03:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1099 transitions. [2022-12-13 22:03:50,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.496386630532972 [2022-12-13 22:03:50,097 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1099 transitions. [2022-12-13 22:03:50,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1099 transitions. [2022-12-13 22:03:50,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:50,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1099 transitions. [2022-12-13 22:03:50,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.11111111111111) internal successors, (1099), 9 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:50,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:50,101 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:50,101 INFO L175 Difference]: Start difference. First operand has 101 places, 169 transitions, 2020 flow. Second operand 9 states and 1099 transitions. [2022-12-13 22:03:50,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 254 transitions, 3009 flow [2022-12-13 22:03:50,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 254 transitions, 2928 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 22:03:50,198 INFO L231 Difference]: Finished difference. Result has 107 places, 179 transitions, 2344 flow [2022-12-13 22:03:50,199 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2344, PETRI_PLACES=107, PETRI_TRANSITIONS=179} [2022-12-13 22:03:50,199 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 60 predicate places. [2022-12-13 22:03:50,199 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 179 transitions, 2344 flow [2022-12-13 22:03:50,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.28571428571429) internal successors, (786), 7 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:50,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:50,200 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] [2022-12-13 22:03:50,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 22:03:50,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:50,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:50,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1356500574, now seen corresponding path program 11 times [2022-12-13 22:03:50,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:50,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934087509] [2022-12-13 22:03:50,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:50,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:50,321 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 22:03:50,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:50,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934087509] [2022-12-13 22:03:50,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934087509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:50,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:50,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:03:50,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630536716] [2022-12-13 22:03:50,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:50,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:50,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:50,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:50,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 179 transitions, 2344 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:50,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:50,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:50,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:51,238 INFO L130 PetriNetUnfolder]: 3715/6764 cut-off events. [2022-12-13 22:03:51,238 INFO L131 PetriNetUnfolder]: For 43868/45721 co-relation queries the response was YES. [2022-12-13 22:03:51,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33641 conditions, 6764 events. 3715/6764 cut-off events. For 43868/45721 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 49993 event pairs, 507 based on Foata normal form. 650/7278 useless extension candidates. Maximal degree in co-relation 33608. Up to 2118 conditions per place. [2022-12-13 22:03:51,275 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 121 selfloop transitions, 137 changer transitions 4/283 dead transitions. [2022-12-13 22:03:51,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 283 transitions, 3550 flow [2022-12-13 22:03:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:03:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:03:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1485 transitions. [2022-12-13 22:03:51,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2022-12-13 22:03:51,278 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1485 transitions. [2022-12-13 22:03:51,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1485 transitions. [2022-12-13 22:03:51,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:51,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1485 transitions. [2022-12-13 22:03:51,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 123.75) internal successors, (1485), 12 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:51,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:51,282 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:51,283 INFO L175 Difference]: Start difference. First operand has 107 places, 179 transitions, 2344 flow. Second operand 12 states and 1485 transitions. [2022-12-13 22:03:51,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 283 transitions, 3550 flow [2022-12-13 22:03:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 283 transitions, 3511 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 22:03:51,361 INFO L231 Difference]: Finished difference. Result has 117 places, 193 transitions, 2805 flow [2022-12-13 22:03:51,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2805, PETRI_PLACES=117, PETRI_TRANSITIONS=193} [2022-12-13 22:03:51,361 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 70 predicate places. [2022-12-13 22:03:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 193 transitions, 2805 flow [2022-12-13 22:03:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:51,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:51,362 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] [2022-12-13 22:03:51,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 22:03:51,362 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash -745729164, now seen corresponding path program 12 times [2022-12-13 22:03:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:51,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577128716] [2022-12-13 22:03:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:51,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:51,499 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 22:03:51,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:51,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577128716] [2022-12-13 22:03:51,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577128716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:51,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:51,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:03:51,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055515899] [2022-12-13 22:03:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:51,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:51,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:51,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:51,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 193 transitions, 2805 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:51,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:51,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:51,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:52,353 INFO L130 PetriNetUnfolder]: 3334/6217 cut-off events. [2022-12-13 22:03:52,353 INFO L131 PetriNetUnfolder]: For 52418/53832 co-relation queries the response was YES. [2022-12-13 22:03:52,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32375 conditions, 6217 events. 3334/6217 cut-off events. For 52418/53832 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 46000 event pairs, 844 based on Foata normal form. 428/6573 useless extension candidates. Maximal degree in co-relation 32340. Up to 4371 conditions per place. [2022-12-13 22:03:52,384 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 168 selfloop transitions, 62 changer transitions 8/259 dead transitions. [2022-12-13 22:03:52,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 259 transitions, 3795 flow [2022-12-13 22:03:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:03:52,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:03:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1450 transitions. [2022-12-13 22:03:52,387 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4911924119241192 [2022-12-13 22:03:52,387 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1450 transitions. [2022-12-13 22:03:52,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1450 transitions. [2022-12-13 22:03:52,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:52,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1450 transitions. [2022-12-13 22:03:52,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 120.83333333333333) internal successors, (1450), 12 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:52,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:52,391 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:52,391 INFO L175 Difference]: Start difference. First operand has 117 places, 193 transitions, 2805 flow. Second operand 12 states and 1450 transitions. [2022-12-13 22:03:52,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 259 transitions, 3795 flow [2022-12-13 22:03:52,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 259 transitions, 3458 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-12-13 22:03:52,489 INFO L231 Difference]: Finished difference. Result has 121 places, 200 transitions, 2739 flow [2022-12-13 22:03:52,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2739, PETRI_PLACES=121, PETRI_TRANSITIONS=200} [2022-12-13 22:03:52,489 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 74 predicate places. [2022-12-13 22:03:52,489 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 200 transitions, 2739 flow [2022-12-13 22:03:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:52,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:52,490 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] [2022-12-13 22:03:52,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 22:03:52,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:52,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1962828478, now seen corresponding path program 13 times [2022-12-13 22:03:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:52,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252461919] [2022-12-13 22:03:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:52,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:52,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252461919] [2022-12-13 22:03:52,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252461919] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:52,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:52,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:03:52,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653231871] [2022-12-13 22:03:52,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:52,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:03:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:52,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:03:52,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:03:52,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:52,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 200 transitions, 2739 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:52,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:52,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:52,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:53,710 INFO L130 PetriNetUnfolder]: 3924/7389 cut-off events. [2022-12-13 22:03:53,710 INFO L131 PetriNetUnfolder]: For 51960/53623 co-relation queries the response was YES. [2022-12-13 22:03:53,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36184 conditions, 7389 events. 3924/7389 cut-off events. For 51960/53623 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 57326 event pairs, 618 based on Foata normal form. 618/7888 useless extension candidates. Maximal degree in co-relation 36148. Up to 1780 conditions per place. [2022-12-13 22:03:53,748 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 137 selfloop transitions, 220 changer transitions 1/379 dead transitions. [2022-12-13 22:03:53,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 379 transitions, 4957 flow [2022-12-13 22:03:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 22:03:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 22:03:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2303 transitions. [2022-12-13 22:03:53,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4927257167308515 [2022-12-13 22:03:53,751 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2303 transitions. [2022-12-13 22:03:53,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2303 transitions. [2022-12-13 22:03:53,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:53,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2303 transitions. [2022-12-13 22:03:53,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 121.21052631578948) internal successors, (2303), 19 states have internal predecessors, (2303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:53,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 246.0) internal successors, (4920), 20 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:53,757 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 246.0) internal successors, (4920), 20 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:53,757 INFO L175 Difference]: Start difference. First operand has 121 places, 200 transitions, 2739 flow. Second operand 19 states and 2303 transitions. [2022-12-13 22:03:53,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 379 transitions, 4957 flow [2022-12-13 22:03:53,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 379 transitions, 4818 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-13 22:03:53,860 INFO L231 Difference]: Finished difference. Result has 135 places, 274 transitions, 4308 flow [2022-12-13 22:03:53,860 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4308, PETRI_PLACES=135, PETRI_TRANSITIONS=274} [2022-12-13 22:03:53,860 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2022-12-13 22:03:53,861 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 274 transitions, 4308 flow [2022-12-13 22:03:53,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:53,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:53,861 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] [2022-12-13 22:03:53,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 22:03:53,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:53,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:53,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1467781918, now seen corresponding path program 14 times [2022-12-13 22:03:53,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:53,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246822552] [2022-12-13 22:03:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:53,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:54,026 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 22:03:54,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:54,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246822552] [2022-12-13 22:03:54,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246822552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:54,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:54,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:03:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022642170] [2022-12-13 22:03:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:54,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:54,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:54,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:54,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 274 transitions, 4308 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:54,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:54,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:54,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:54,860 INFO L130 PetriNetUnfolder]: 2484/4861 cut-off events. [2022-12-13 22:03:54,860 INFO L131 PetriNetUnfolder]: For 38520/39910 co-relation queries the response was YES. [2022-12-13 22:03:54,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25703 conditions, 4861 events. 2484/4861 cut-off events. For 38520/39910 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 35299 event pairs, 640 based on Foata normal form. 476/5251 useless extension candidates. Maximal degree in co-relation 25661. Up to 2747 conditions per place. [2022-12-13 22:03:54,891 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 126 selfloop transitions, 93 changer transitions 39/275 dead transitions. [2022-12-13 22:03:54,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 275 transitions, 4210 flow [2022-12-13 22:03:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:03:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 22:03:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1343 transitions. [2022-12-13 22:03:54,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4963045084996304 [2022-12-13 22:03:54,894 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1343 transitions. [2022-12-13 22:03:54,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1343 transitions. [2022-12-13 22:03:54,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:54,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1343 transitions. [2022-12-13 22:03:54,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.0909090909091) internal successors, (1343), 11 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:54,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:54,900 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:54,900 INFO L175 Difference]: Start difference. First operand has 135 places, 274 transitions, 4308 flow. Second operand 11 states and 1343 transitions. [2022-12-13 22:03:54,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 275 transitions, 4210 flow [2022-12-13 22:03:54,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 275 transitions, 4102 flow, removed 45 selfloop flow, removed 5 redundant places. [2022-12-13 22:03:54,980 INFO L231 Difference]: Finished difference. Result has 143 places, 190 transitions, 2915 flow [2022-12-13 22:03:54,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2915, PETRI_PLACES=143, PETRI_TRANSITIONS=190} [2022-12-13 22:03:54,981 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 96 predicate places. [2022-12-13 22:03:54,981 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 190 transitions, 2915 flow [2022-12-13 22:03:54,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:54,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:54,981 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] [2022-12-13 22:03:54,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 22:03:54,982 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:54,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:54,982 INFO L85 PathProgramCache]: Analyzing trace with hash -657197116, now seen corresponding path program 15 times [2022-12-13 22:03:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:54,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014305936] [2022-12-13 22:03:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:54,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:55,179 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 22:03:55,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:55,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014305936] [2022-12-13 22:03:55,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014305936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:55,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:55,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:03:55,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137455537] [2022-12-13 22:03:55,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:55,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:55,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:55,206 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:55,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 190 transitions, 2915 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:55,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:55,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:55,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:55,748 INFO L130 PetriNetUnfolder]: 1612/3175 cut-off events. [2022-12-13 22:03:55,748 INFO L131 PetriNetUnfolder]: For 26517/26855 co-relation queries the response was YES. [2022-12-13 22:03:55,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17060 conditions, 3175 events. 1612/3175 cut-off events. For 26517/26855 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21166 event pairs, 508 based on Foata normal form. 118/3229 useless extension candidates. Maximal degree in co-relation 17014. Up to 2147 conditions per place. [2022-12-13 22:03:55,764 INFO L137 encePairwiseOnDemand]: 237/246 looper letters, 131 selfloop transitions, 52 changer transitions 19/219 dead transitions. [2022-12-13 22:03:55,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 219 transitions, 3405 flow [2022-12-13 22:03:55,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:03:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 22:03:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1215 transitions. [2022-12-13 22:03:55,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49390243902439024 [2022-12-13 22:03:55,766 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1215 transitions. [2022-12-13 22:03:55,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1215 transitions. [2022-12-13 22:03:55,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:55,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1215 transitions. [2022-12-13 22:03:55,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.5) internal successors, (1215), 10 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:55,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:55,769 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:55,769 INFO L175 Difference]: Start difference. First operand has 143 places, 190 transitions, 2915 flow. Second operand 10 states and 1215 transitions. [2022-12-13 22:03:55,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 219 transitions, 3405 flow [2022-12-13 22:03:55,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 219 transitions, 3194 flow, removed 37 selfloop flow, removed 11 redundant places. [2022-12-13 22:03:55,820 INFO L231 Difference]: Finished difference. Result has 142 places, 166 transitions, 2520 flow [2022-12-13 22:03:55,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2489, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2520, PETRI_PLACES=142, PETRI_TRANSITIONS=166} [2022-12-13 22:03:55,821 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 95 predicate places. [2022-12-13 22:03:55,821 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 166 transitions, 2520 flow [2022-12-13 22:03:55,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:55,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:55,821 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] [2022-12-13 22:03:55,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 22:03:55,822 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1827349526, now seen corresponding path program 16 times [2022-12-13 22:03:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:55,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263506583] [2022-12-13 22:03:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:56,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263506583] [2022-12-13 22:03:56,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263506583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:56,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:56,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:03:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826638276] [2022-12-13 22:03:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:56,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:03:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:03:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:03:56,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2022-12-13 22:03:56,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 166 transitions, 2520 flow. Second operand has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:56,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:56,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2022-12-13 22:03:56,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:56,756 INFO L130 PetriNetUnfolder]: 1824/3627 cut-off events. [2022-12-13 22:03:56,756 INFO L131 PetriNetUnfolder]: For 26292/26614 co-relation queries the response was YES. [2022-12-13 22:03:56,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18257 conditions, 3627 events. 1824/3627 cut-off events. For 26292/26614 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 24957 event pairs, 252 based on Foata normal form. 78/3665 useless extension candidates. Maximal degree in co-relation 18214. Up to 1169 conditions per place. [2022-12-13 22:03:56,781 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 120 selfloop transitions, 115 changer transitions 2/254 dead transitions. [2022-12-13 22:03:56,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 254 transitions, 3575 flow [2022-12-13 22:03:56,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:03:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:03:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1432 transitions. [2022-12-13 22:03:56,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2022-12-13 22:03:56,783 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1432 transitions. [2022-12-13 22:03:56,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1432 transitions. [2022-12-13 22:03:56,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:56,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1432 transitions. [2022-12-13 22:03:56,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.33333333333333) internal successors, (1432), 12 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:56,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:56,786 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:56,786 INFO L175 Difference]: Start difference. First operand has 142 places, 166 transitions, 2520 flow. Second operand 12 states and 1432 transitions. [2022-12-13 22:03:56,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 254 transitions, 3575 flow [2022-12-13 22:03:56,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 254 transitions, 3471 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-12-13 22:03:56,839 INFO L231 Difference]: Finished difference. Result has 140 places, 186 transitions, 2947 flow [2022-12-13 22:03:56,839 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2947, PETRI_PLACES=140, PETRI_TRANSITIONS=186} [2022-12-13 22:03:56,839 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 93 predicate places. [2022-12-13 22:03:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 186 transitions, 2947 flow [2022-12-13 22:03:56,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:56,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:56,840 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] [2022-12-13 22:03:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 22:03:56,840 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1453989970, now seen corresponding path program 17 times [2022-12-13 22:03:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:56,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414633082] [2022-12-13 22:03:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:56,981 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 22:03:56,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:56,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414633082] [2022-12-13 22:03:56,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414633082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:56,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:56,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:03:56,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712273156] [2022-12-13 22:03:56,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:56,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:03:56,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:03:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:03:57,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:57,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 186 transitions, 2947 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:57,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:57,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:57,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:57,669 INFO L130 PetriNetUnfolder]: 1614/3297 cut-off events. [2022-12-13 22:03:57,669 INFO L131 PetriNetUnfolder]: For 30765/31309 co-relation queries the response was YES. [2022-12-13 22:03:57,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18346 conditions, 3297 events. 1614/3297 cut-off events. For 30765/31309 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 22747 event pairs, 196 based on Foata normal form. 148/3423 useless extension candidates. Maximal degree in co-relation 18302. Up to 941 conditions per place. [2022-12-13 22:03:57,687 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 114 selfloop transitions, 127 changer transitions 4/262 dead transitions. [2022-12-13 22:03:57,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 262 transitions, 3904 flow [2022-12-13 22:03:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:03:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:03:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1475 transitions. [2022-12-13 22:03:57,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49966124661246614 [2022-12-13 22:03:57,690 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1475 transitions. [2022-12-13 22:03:57,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1475 transitions. [2022-12-13 22:03:57,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:57,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1475 transitions. [2022-12-13 22:03:57,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.91666666666667) internal successors, (1475), 12 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:57,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:57,694 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:57,694 INFO L175 Difference]: Start difference. First operand has 140 places, 186 transitions, 2947 flow. Second operand 12 states and 1475 transitions. [2022-12-13 22:03:57,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 262 transitions, 3904 flow [2022-12-13 22:03:57,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 262 transitions, 3694 flow, removed 38 selfloop flow, removed 11 redundant places. [2022-12-13 22:03:57,760 INFO L231 Difference]: Finished difference. Result has 141 places, 191 transitions, 3071 flow [2022-12-13 22:03:57,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3071, PETRI_PLACES=141, PETRI_TRANSITIONS=191} [2022-12-13 22:03:57,761 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 94 predicate places. [2022-12-13 22:03:57,761 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 191 transitions, 3071 flow [2022-12-13 22:03:57,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:57,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:57,761 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] [2022-12-13 22:03:57,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 22:03:57,762 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:57,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1478823004, now seen corresponding path program 18 times [2022-12-13 22:03:57,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:57,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955456511] [2022-12-13 22:03:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:57,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:57,878 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 22:03:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:57,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955456511] [2022-12-13 22:03:57,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955456511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:57,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:57,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:03:57,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048710695] [2022-12-13 22:03:57,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:57,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:03:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:03:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:03:57,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:03:57,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 191 transitions, 3071 flow. Second operand has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:57,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:57,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:03:57,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:58,416 INFO L130 PetriNetUnfolder]: 1583/3214 cut-off events. [2022-12-13 22:03:58,417 INFO L131 PetriNetUnfolder]: For 31752/32260 co-relation queries the response was YES. [2022-12-13 22:03:58,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18256 conditions, 3214 events. 1583/3214 cut-off events. For 31752/32260 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 22001 event pairs, 362 based on Foata normal form. 74/3250 useless extension candidates. Maximal degree in co-relation 18214. Up to 1987 conditions per place. [2022-12-13 22:03:58,433 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 111 selfloop transitions, 85 changer transitions 15/228 dead transitions. [2022-12-13 22:03:58,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 228 transitions, 3680 flow [2022-12-13 22:03:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:03:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1097 transitions. [2022-12-13 22:03:58,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.495483288166215 [2022-12-13 22:03:58,435 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1097 transitions. [2022-12-13 22:03:58,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1097 transitions. [2022-12-13 22:03:58,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:58,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1097 transitions. [2022-12-13 22:03:58,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.88888888888889) internal successors, (1097), 9 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:58,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:58,438 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:58,438 INFO L175 Difference]: Start difference. First operand has 141 places, 191 transitions, 3071 flow. Second operand 9 states and 1097 transitions. [2022-12-13 22:03:58,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 228 transitions, 3680 flow [2022-12-13 22:03:58,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 228 transitions, 3491 flow, removed 4 selfloop flow, removed 11 redundant places. [2022-12-13 22:03:58,497 INFO L231 Difference]: Finished difference. Result has 139 places, 176 transitions, 2778 flow [2022-12-13 22:03:58,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2846, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2778, PETRI_PLACES=139, PETRI_TRANSITIONS=176} [2022-12-13 22:03:58,498 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 92 predicate places. [2022-12-13 22:03:58,498 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 176 transitions, 2778 flow [2022-12-13 22:03:58,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.14285714285714) internal successors, (806), 7 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:58,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:58,498 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] [2022-12-13 22:03:58,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 22:03:58,498 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash -83499402, now seen corresponding path program 19 times [2022-12-13 22:03:58,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:58,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231094666] [2022-12-13 22:03:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:58,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:58,702 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 22:03:58,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:58,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231094666] [2022-12-13 22:03:58,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231094666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:58,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:58,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 22:03:58,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103681300] [2022-12-13 22:03:58,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:58,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 22:03:58,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:58,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 22:03:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-13 22:03:58,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2022-12-13 22:03:58,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 176 transitions, 2778 flow. Second operand has 11 states, 11 states have (on average 110.63636363636364) internal successors, (1217), 11 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:58,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:58,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2022-12-13 22:03:58,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:03:59,298 INFO L130 PetriNetUnfolder]: 1551/3182 cut-off events. [2022-12-13 22:03:59,298 INFO L131 PetriNetUnfolder]: For 29752/30144 co-relation queries the response was YES. [2022-12-13 22:03:59,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17274 conditions, 3182 events. 1551/3182 cut-off events. For 29752/30144 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21885 event pairs, 368 based on Foata normal form. 54/3200 useless extension candidates. Maximal degree in co-relation 17234. Up to 1981 conditions per place. [2022-12-13 22:03:59,313 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 118 selfloop transitions, 74 changer transitions 28/237 dead transitions. [2022-12-13 22:03:59,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 237 transitions, 3664 flow [2022-12-13 22:03:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 22:03:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 22:03:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1644 transitions. [2022-12-13 22:03:59,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2022-12-13 22:03:59,315 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1644 transitions. [2022-12-13 22:03:59,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1644 transitions. [2022-12-13 22:03:59,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:03:59,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1644 transitions. [2022-12-13 22:03:59,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 117.42857142857143) internal successors, (1644), 14 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:59,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 246.0) internal successors, (3690), 15 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:59,319 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 246.0) internal successors, (3690), 15 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:59,319 INFO L175 Difference]: Start difference. First operand has 139 places, 176 transitions, 2778 flow. Second operand 14 states and 1644 transitions. [2022-12-13 22:03:59,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 237 transitions, 3664 flow [2022-12-13 22:03:59,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 237 transitions, 3353 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-12-13 22:03:59,371 INFO L231 Difference]: Finished difference. Result has 142 places, 165 transitions, 2444 flow [2022-12-13 22:03:59,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2485, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2444, PETRI_PLACES=142, PETRI_TRANSITIONS=165} [2022-12-13 22:03:59,371 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 95 predicate places. [2022-12-13 22:03:59,371 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 165 transitions, 2444 flow [2022-12-13 22:03:59,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 110.63636363636364) internal successors, (1217), 11 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:59,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:03:59,372 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] [2022-12-13 22:03:59,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 22:03:59,372 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:03:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash -87331526, now seen corresponding path program 20 times [2022-12-13 22:03:59,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:03:59,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666854754] [2022-12-13 22:03:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:59,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:03:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:59,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:03:59,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666854754] [2022-12-13 22:03:59,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666854754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:59,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:59,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:03:59,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818883502] [2022-12-13 22:03:59,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:59,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:59,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:03:59,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:59,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:59,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 246 [2022-12-13 22:03:59,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 165 transitions, 2444 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:59,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:03:59,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 246 [2022-12-13 22:03:59,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:00,116 INFO L130 PetriNetUnfolder]: 1715/3324 cut-off events. [2022-12-13 22:04:00,116 INFO L131 PetriNetUnfolder]: For 28825/29179 co-relation queries the response was YES. [2022-12-13 22:04:00,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17395 conditions, 3324 events. 1715/3324 cut-off events. For 28825/29179 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 21691 event pairs, 446 based on Foata normal form. 38/3322 useless extension candidates. Maximal degree in co-relation 17357. Up to 2081 conditions per place. [2022-12-13 22:04:00,132 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 110 selfloop transitions, 87 changer transitions 16/228 dead transitions. [2022-12-13 22:04:00,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 228 transitions, 3260 flow [2022-12-13 22:04:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:04:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:04:00,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1424 transitions. [2022-12-13 22:04:00,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2022-12-13 22:04:00,134 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1424 transitions. [2022-12-13 22:04:00,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1424 transitions. [2022-12-13 22:04:00,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:00,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1424 transitions. [2022-12-13 22:04:00,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.66666666666667) internal successors, (1424), 12 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,137 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,137 INFO L175 Difference]: Start difference. First operand has 142 places, 165 transitions, 2444 flow. Second operand 12 states and 1424 transitions. [2022-12-13 22:04:00,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 228 transitions, 3260 flow [2022-12-13 22:04:00,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 228 transitions, 3025 flow, removed 22 selfloop flow, removed 12 redundant places. [2022-12-13 22:04:00,181 INFO L231 Difference]: Finished difference. Result has 139 places, 157 transitions, 2239 flow [2022-12-13 22:04:00,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2239, PETRI_PLACES=139, PETRI_TRANSITIONS=157} [2022-12-13 22:04:00,181 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 92 predicate places. [2022-12-13 22:04:00,181 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 157 transitions, 2239 flow [2022-12-13 22:04:00,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,182 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:00,182 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] [2022-12-13 22:04:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 22:04:00,182 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash 311110576, now seen corresponding path program 21 times [2022-12-13 22:04:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:00,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662856204] [2022-12-13 22:04:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:00,316 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 22:04:00,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:00,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662856204] [2022-12-13 22:04:00,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662856204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:00,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:00,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:04:00,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280610066] [2022-12-13 22:04:00,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:00,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:04:00,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:00,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:04:00,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:04:00,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:00,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 157 transitions, 2239 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:00,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:00,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:00,868 INFO L130 PetriNetUnfolder]: 1420/2957 cut-off events. [2022-12-13 22:04:00,868 INFO L131 PetriNetUnfolder]: For 25966/26304 co-relation queries the response was YES. [2022-12-13 22:04:00,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15553 conditions, 2957 events. 1420/2957 cut-off events. For 25966/26304 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 20227 event pairs, 378 based on Foata normal form. 26/2955 useless extension candidates. Maximal degree in co-relation 15516. Up to 2033 conditions per place. [2022-12-13 22:04:00,890 INFO L137 encePairwiseOnDemand]: 237/246 looper letters, 122 selfloop transitions, 50 changer transitions 28/217 dead transitions. [2022-12-13 22:04:00,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 217 transitions, 3155 flow [2022-12-13 22:04:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:04:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 22:04:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1788 transitions. [2022-12-13 22:04:00,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4845528455284553 [2022-12-13 22:04:00,893 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1788 transitions. [2022-12-13 22:04:00,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1788 transitions. [2022-12-13 22:04:00,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:00,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1788 transitions. [2022-12-13 22:04:00,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.2) internal successors, (1788), 15 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,899 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,900 INFO L175 Difference]: Start difference. First operand has 139 places, 157 transitions, 2239 flow. Second operand 15 states and 1788 transitions. [2022-12-13 22:04:00,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 217 transitions, 3155 flow [2022-12-13 22:04:00,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 217 transitions, 2943 flow, removed 5 selfloop flow, removed 12 redundant places. [2022-12-13 22:04:00,953 INFO L231 Difference]: Finished difference. Result has 141 places, 150 transitions, 2056 flow [2022-12-13 22:04:00,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2047, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2056, PETRI_PLACES=141, PETRI_TRANSITIONS=150} [2022-12-13 22:04:00,953 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 94 predicate places. [2022-12-13 22:04:00,954 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 150 transitions, 2056 flow [2022-12-13 22:04:00,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:00,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:00,954 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] [2022-12-13 22:04:00,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 22:04:00,954 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash -7258550, now seen corresponding path program 22 times [2022-12-13 22:04:00,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:00,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585985205] [2022-12-13 22:04:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:01,088 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 22:04:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:01,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585985205] [2022-12-13 22:04:01,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585985205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:01,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:01,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278533119] [2022-12-13 22:04:01,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:01,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:01,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 150 transitions, 2056 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:01,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:01,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:01,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:01,598 INFO L130 PetriNetUnfolder]: 1350/2795 cut-off events. [2022-12-13 22:04:01,598 INFO L131 PetriNetUnfolder]: For 23207/23553 co-relation queries the response was YES. [2022-12-13 22:04:01,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14456 conditions, 2795 events. 1350/2795 cut-off events. For 23207/23553 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18824 event pairs, 342 based on Foata normal form. 38/2797 useless extension candidates. Maximal degree in co-relation 14420. Up to 1699 conditions per place. [2022-12-13 22:04:01,610 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 96 selfloop transitions, 56 changer transitions 39/208 dead transitions. [2022-12-13 22:04:01,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 208 transitions, 2806 flow [2022-12-13 22:04:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:04:01,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 22:04:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1570 transitions. [2022-12-13 22:04:01,613 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.490931832395247 [2022-12-13 22:04:01,613 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1570 transitions. [2022-12-13 22:04:01,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1570 transitions. [2022-12-13 22:04:01,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:01,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1570 transitions. [2022-12-13 22:04:01,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 120.76923076923077) internal successors, (1570), 13 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:01,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 246.0) internal successors, (3444), 14 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:01,617 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 246.0) internal successors, (3444), 14 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:01,617 INFO L175 Difference]: Start difference. First operand has 141 places, 150 transitions, 2056 flow. Second operand 13 states and 1570 transitions. [2022-12-13 22:04:01,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 208 transitions, 2806 flow [2022-12-13 22:04:01,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 208 transitions, 2674 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-12-13 22:04:01,658 INFO L231 Difference]: Finished difference. Result has 139 places, 126 transitions, 1623 flow [2022-12-13 22:04:01,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1623, PETRI_PLACES=139, PETRI_TRANSITIONS=126} [2022-12-13 22:04:01,658 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 92 predicate places. [2022-12-13 22:04:01,659 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 126 transitions, 1623 flow [2022-12-13 22:04:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:01,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:01,659 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] [2022-12-13 22:04:01,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 22:04:01,659 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1957653336, now seen corresponding path program 23 times [2022-12-13 22:04:01,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852378686] [2022-12-13 22:04:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:01,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:01,797 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 22:04:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:01,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852378686] [2022-12-13 22:04:01,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852378686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:01,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:01,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:04:01,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497980014] [2022-12-13 22:04:01,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:01,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:04:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:04:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:04:01,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:01,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 126 transitions, 1623 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:01,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:01,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:01,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:02,282 INFO L130 PetriNetUnfolder]: 1250/2567 cut-off events. [2022-12-13 22:04:02,283 INFO L131 PetriNetUnfolder]: For 21640/21978 co-relation queries the response was YES. [2022-12-13 22:04:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13116 conditions, 2567 events. 1250/2567 cut-off events. For 21640/21978 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 16774 event pairs, 364 based on Foata normal form. 24/2563 useless extension candidates. Maximal degree in co-relation 13080. Up to 1937 conditions per place. [2022-12-13 22:04:02,294 INFO L137 encePairwiseOnDemand]: 237/246 looper letters, 110 selfloop transitions, 25 changer transitions 19/171 dead transitions. [2022-12-13 22:04:02,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 171 transitions, 2195 flow [2022-12-13 22:04:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:04:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 22:04:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1767 transitions. [2022-12-13 22:04:02,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788617886178862 [2022-12-13 22:04:02,296 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1767 transitions. [2022-12-13 22:04:02,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1767 transitions. [2022-12-13 22:04:02,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:02,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1767 transitions. [2022-12-13 22:04:02,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 117.8) internal successors, (1767), 15 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,300 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 246.0) internal successors, (3936), 16 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,300 INFO L175 Difference]: Start difference. First operand has 139 places, 126 transitions, 1623 flow. Second operand 15 states and 1767 transitions. [2022-12-13 22:04:02,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 171 transitions, 2195 flow [2022-12-13 22:04:02,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 171 transitions, 2000 flow, removed 20 selfloop flow, removed 15 redundant places. [2022-12-13 22:04:02,329 INFO L231 Difference]: Finished difference. Result has 130 places, 121 transitions, 1406 flow [2022-12-13 22:04:02,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1406, PETRI_PLACES=130, PETRI_TRANSITIONS=121} [2022-12-13 22:04:02,329 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 83 predicate places. [2022-12-13 22:04:02,329 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 121 transitions, 1406 flow [2022-12-13 22:04:02,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:02,330 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] [2022-12-13 22:04:02,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 22:04:02,330 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:02,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1135869628, now seen corresponding path program 24 times [2022-12-13 22:04:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:02,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694358979] [2022-12-13 22:04:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:02,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:02,435 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 22:04:02,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:02,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694358979] [2022-12-13 22:04:02,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694358979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:02,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:02,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:04:02,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772256859] [2022-12-13 22:04:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:04:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:04:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:04:02,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:02,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 1406 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:02,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:02,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:02,957 INFO L130 PetriNetUnfolder]: 1264/2595 cut-off events. [2022-12-13 22:04:02,957 INFO L131 PetriNetUnfolder]: For 18900/19412 co-relation queries the response was YES. [2022-12-13 22:04:02,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12645 conditions, 2595 events. 1264/2595 cut-off events. For 18900/19412 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 17020 event pairs, 97 based on Foata normal form. 114/2672 useless extension candidates. Maximal degree in co-relation 12610. Up to 858 conditions per place. [2022-12-13 22:04:02,970 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 88 selfloop transitions, 94 changer transitions 5/204 dead transitions. [2022-12-13 22:04:02,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 204 transitions, 2324 flow [2022-12-13 22:04:02,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:04:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 22:04:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1229 transitions. [2022-12-13 22:04:02,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49959349593495933 [2022-12-13 22:04:02,971 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1229 transitions. [2022-12-13 22:04:02,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1229 transitions. [2022-12-13 22:04:02,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:02,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1229 transitions. [2022-12-13 22:04:02,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,974 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:02,974 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 1406 flow. Second operand 10 states and 1229 transitions. [2022-12-13 22:04:02,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 204 transitions, 2324 flow [2022-12-13 22:04:02,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 204 transitions, 2159 flow, removed 18 selfloop flow, removed 19 redundant places. [2022-12-13 22:04:03,000 INFO L231 Difference]: Finished difference. Result has 116 places, 138 transitions, 1791 flow [2022-12-13 22:04:03,000 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1791, PETRI_PLACES=116, PETRI_TRANSITIONS=138} [2022-12-13 22:04:03,000 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2022-12-13 22:04:03,000 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 138 transitions, 1791 flow [2022-12-13 22:04:03,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:03,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:03,000 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] [2022-12-13 22:04:03,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 22:04:03,001 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:03,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:03,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1290683226, now seen corresponding path program 25 times [2022-12-13 22:04:03,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:03,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210046160] [2022-12-13 22:04:03,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:03,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:03,124 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 22:04:03,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210046160] [2022-12-13 22:04:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210046160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:03,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:03,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348799300] [2022-12-13 22:04:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:03,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:03,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:03,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:03,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 138 transitions, 1791 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:03,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:03,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:03,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:03,695 INFO L130 PetriNetUnfolder]: 1237/2574 cut-off events. [2022-12-13 22:04:03,695 INFO L131 PetriNetUnfolder]: For 25069/25709 co-relation queries the response was YES. [2022-12-13 22:04:03,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13649 conditions, 2574 events. 1237/2574 cut-off events. For 25069/25709 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17146 event pairs, 89 based on Foata normal form. 160/2696 useless extension candidates. Maximal degree in co-relation 13616. Up to 815 conditions per place. [2022-12-13 22:04:03,709 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 99 selfloop transitions, 99 changer transitions 4/219 dead transitions. [2022-12-13 22:04:03,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 219 transitions, 2687 flow [2022-12-13 22:04:03,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:04:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 22:04:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1354 transitions. [2022-12-13 22:04:03,710 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.500369549150037 [2022-12-13 22:04:03,711 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1354 transitions. [2022-12-13 22:04:03,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1354 transitions. [2022-12-13 22:04:03,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:03,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1354 transitions. [2022-12-13 22:04:03,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 123.0909090909091) internal successors, (1354), 11 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:03,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:03,713 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:03,714 INFO L175 Difference]: Start difference. First operand has 116 places, 138 transitions, 1791 flow. Second operand 11 states and 1354 transitions. [2022-12-13 22:04:03,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 219 transitions, 2687 flow [2022-12-13 22:04:03,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 219 transitions, 2535 flow, removed 52 selfloop flow, removed 7 redundant places. [2022-12-13 22:04:03,743 INFO L231 Difference]: Finished difference. Result has 121 places, 147 transitions, 2011 flow [2022-12-13 22:04:03,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2011, PETRI_PLACES=121, PETRI_TRANSITIONS=147} [2022-12-13 22:04:03,743 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 74 predicate places. [2022-12-13 22:04:03,743 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 147 transitions, 2011 flow [2022-12-13 22:04:03,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:03,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:03,744 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] [2022-12-13 22:04:03,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 22:04:03,744 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:03,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1611269222, now seen corresponding path program 26 times [2022-12-13 22:04:03,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:03,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553410041] [2022-12-13 22:04:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:03,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:03,858 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 22:04:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:03,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553410041] [2022-12-13 22:04:03,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553410041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:03,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:03,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49756598] [2022-12-13 22:04:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:03,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:03,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:03,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:03,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 147 transitions, 2011 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:03,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:03,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:03,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:04,471 INFO L130 PetriNetUnfolder]: 1282/2673 cut-off events. [2022-12-13 22:04:04,472 INFO L131 PetriNetUnfolder]: For 28623/29275 co-relation queries the response was YES. [2022-12-13 22:04:04,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14526 conditions, 2673 events. 1282/2673 cut-off events. For 28623/29275 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 18092 event pairs, 89 based on Foata normal form. 148/2779 useless extension candidates. Maximal degree in co-relation 14492. Up to 804 conditions per place. [2022-12-13 22:04:04,483 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 90 selfloop transitions, 99 changer transitions 19/225 dead transitions. [2022-12-13 22:04:04,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 225 transitions, 2890 flow [2022-12-13 22:04:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:04:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:04:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1470 transitions. [2022-12-13 22:04:04,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49796747967479676 [2022-12-13 22:04:04,485 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1470 transitions. [2022-12-13 22:04:04,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1470 transitions. [2022-12-13 22:04:04,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:04,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1470 transitions. [2022-12-13 22:04:04,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 122.5) internal successors, (1470), 12 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:04,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:04,488 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:04,488 INFO L175 Difference]: Start difference. First operand has 121 places, 147 transitions, 2011 flow. Second operand 12 states and 1470 transitions. [2022-12-13 22:04:04,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 225 transitions, 2890 flow [2022-12-13 22:04:04,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 225 transitions, 2695 flow, removed 16 selfloop flow, removed 6 redundant places. [2022-12-13 22:04:04,522 INFO L231 Difference]: Finished difference. Result has 127 places, 143 transitions, 1978 flow [2022-12-13 22:04:04,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1978, PETRI_PLACES=127, PETRI_TRANSITIONS=143} [2022-12-13 22:04:04,522 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 80 predicate places. [2022-12-13 22:04:04,522 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 143 transitions, 1978 flow [2022-12-13 22:04:04,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:04,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:04,523 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] [2022-12-13 22:04:04,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 22:04:04,523 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:04,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:04,523 INFO L85 PathProgramCache]: Analyzing trace with hash -85332352, now seen corresponding path program 27 times [2022-12-13 22:04:04,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:04,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177122564] [2022-12-13 22:04:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:04,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:04,637 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 22:04:04,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:04,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177122564] [2022-12-13 22:04:04,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177122564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:04,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:04,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:04,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049848929] [2022-12-13 22:04:04,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:04,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:04,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:04,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:04,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 143 transitions, 1978 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:04,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:04,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:04,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:05,183 INFO L130 PetriNetUnfolder]: 910/2025 cut-off events. [2022-12-13 22:04:05,183 INFO L131 PetriNetUnfolder]: For 21174/21682 co-relation queries the response was YES. [2022-12-13 22:04:05,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11402 conditions, 2025 events. 910/2025 cut-off events. For 21174/21682 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13427 event pairs, 56 based on Foata normal form. 192/2199 useless extension candidates. Maximal degree in co-relation 11367. Up to 633 conditions per place. [2022-12-13 22:04:05,195 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 88 selfloop transitions, 89 changer transitions 21/213 dead transitions. [2022-12-13 22:04:05,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 213 transitions, 2789 flow [2022-12-13 22:04:05,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:04:05,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 22:04:05,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1352 transitions. [2022-12-13 22:04:05,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49963045084996305 [2022-12-13 22:04:05,196 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1352 transitions. [2022-12-13 22:04:05,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1352 transitions. [2022-12-13 22:04:05,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:05,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1352 transitions. [2022-12-13 22:04:05,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.9090909090909) internal successors, (1352), 11 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,199 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,199 INFO L175 Difference]: Start difference. First operand has 127 places, 143 transitions, 1978 flow. Second operand 11 states and 1352 transitions. [2022-12-13 22:04:05,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 213 transitions, 2789 flow [2022-12-13 22:04:05,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 213 transitions, 2623 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-12-13 22:04:05,227 INFO L231 Difference]: Finished difference. Result has 129 places, 134 transitions, 1911 flow [2022-12-13 22:04:05,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1911, PETRI_PLACES=129, PETRI_TRANSITIONS=134} [2022-12-13 22:04:05,228 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 82 predicate places. [2022-12-13 22:04:05,228 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 134 transitions, 1911 flow [2022-12-13 22:04:05,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:05,228 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] [2022-12-13 22:04:05,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 22:04:05,228 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:05,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash -550715246, now seen corresponding path program 28 times [2022-12-13 22:04:05,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:05,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810962117] [2022-12-13 22:04:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:05,341 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 22:04:05,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:05,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810962117] [2022-12-13 22:04:05,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810962117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:05,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:05,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885696533] [2022-12-13 22:04:05,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:05,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:05,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:05,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:05,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 134 transitions, 1911 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:05,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:05,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:05,767 INFO L130 PetriNetUnfolder]: 672/1533 cut-off events. [2022-12-13 22:04:05,767 INFO L131 PetriNetUnfolder]: For 17623/17861 co-relation queries the response was YES. [2022-12-13 22:04:05,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 1533 events. 672/1533 cut-off events. For 17623/17861 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9632 event pairs, 160 based on Foata normal form. 38/1555 useless extension candidates. Maximal degree in co-relation 8612. Up to 927 conditions per place. [2022-12-13 22:04:05,777 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 96 selfloop transitions, 33 changer transitions 33/176 dead transitions. [2022-12-13 22:04:05,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 176 transitions, 2471 flow [2022-12-13 22:04:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:04:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:04:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1433 transitions. [2022-12-13 22:04:05,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4854336043360434 [2022-12-13 22:04:05,779 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1433 transitions. [2022-12-13 22:04:05,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1433 transitions. [2022-12-13 22:04:05,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:05,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1433 transitions. [2022-12-13 22:04:05,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.41666666666667) internal successors, (1433), 12 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,782 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,782 INFO L175 Difference]: Start difference. First operand has 129 places, 134 transitions, 1911 flow. Second operand 12 states and 1433 transitions. [2022-12-13 22:04:05,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 176 transitions, 2471 flow [2022-12-13 22:04:05,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 176 transitions, 2365 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-12-13 22:04:05,815 INFO L231 Difference]: Finished difference. Result has 135 places, 117 transitions, 1592 flow [2022-12-13 22:04:05,815 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1592, PETRI_PLACES=135, PETRI_TRANSITIONS=117} [2022-12-13 22:04:05,815 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 88 predicate places. [2022-12-13 22:04:05,816 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 117 transitions, 1592 flow [2022-12-13 22:04:05,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,816 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:05,816 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] [2022-12-13 22:04:05,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 22:04:05,816 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash -436984662, now seen corresponding path program 29 times [2022-12-13 22:04:05,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:05,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725720767] [2022-12-13 22:04:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:05,969 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 22:04:05,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:05,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725720767] [2022-12-13 22:04:05,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725720767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:05,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:05,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:04:05,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067202505] [2022-12-13 22:04:05,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:05,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:04:05,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:05,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:04:05,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:04:05,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:05,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 117 transitions, 1592 flow. Second operand has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:05,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:05,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:05,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:06,265 INFO L130 PetriNetUnfolder]: 586/1333 cut-off events. [2022-12-13 22:04:06,265 INFO L131 PetriNetUnfolder]: For 15441/15631 co-relation queries the response was YES. [2022-12-13 22:04:06,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7331 conditions, 1333 events. 586/1333 cut-off events. For 15441/15631 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8143 event pairs, 168 based on Foata normal form. 10/1329 useless extension candidates. Maximal degree in co-relation 7294. Up to 1017 conditions per place. [2022-12-13 22:04:06,271 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 100 selfloop transitions, 13 changer transitions 15/142 dead transitions. [2022-12-13 22:04:06,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 142 transitions, 2013 flow [2022-12-13 22:04:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:04:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 22:04:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1517 transitions. [2022-12-13 22:04:06,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2022-12-13 22:04:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1517 transitions. [2022-12-13 22:04:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1517 transitions. [2022-12-13 22:04:06,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:06,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1517 transitions. [2022-12-13 22:04:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.6923076923077) internal successors, (1517), 13 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 246.0) internal successors, (3444), 14 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,276 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 246.0) internal successors, (3444), 14 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,276 INFO L175 Difference]: Start difference. First operand has 135 places, 117 transitions, 1592 flow. Second operand 13 states and 1517 transitions. [2022-12-13 22:04:06,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 142 transitions, 2013 flow [2022-12-13 22:04:06,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 142 transitions, 1872 flow, removed 18 selfloop flow, removed 18 redundant places. [2022-12-13 22:04:06,294 INFO L231 Difference]: Finished difference. Result has 123 places, 110 transitions, 1382 flow [2022-12-13 22:04:06,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1382, PETRI_PLACES=123, PETRI_TRANSITIONS=110} [2022-12-13 22:04:06,295 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 76 predicate places. [2022-12-13 22:04:06,295 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 110 transitions, 1382 flow [2022-12-13 22:04:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.9) internal successors, (1139), 10 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:06,295 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] [2022-12-13 22:04:06,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 22:04:06,295 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1748094920, now seen corresponding path program 30 times [2022-12-13 22:04:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214121399] [2022-12-13 22:04:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:06,421 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 22:04:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214121399] [2022-12-13 22:04:06,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214121399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:06,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:06,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:06,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983558053] [2022-12-13 22:04:06,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:06,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:06,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:06,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:06,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:06,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 110 transitions, 1382 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:06,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:06,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:06,695 INFO L130 PetriNetUnfolder]: 538/1211 cut-off events. [2022-12-13 22:04:06,695 INFO L131 PetriNetUnfolder]: For 12160/12350 co-relation queries the response was YES. [2022-12-13 22:04:06,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6347 conditions, 1211 events. 538/1211 cut-off events. For 12160/12350 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7167 event pairs, 160 based on Foata normal form. 22/1219 useless extension candidates. Maximal degree in co-relation 6314. Up to 893 conditions per place. [2022-12-13 22:04:06,700 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 82 selfloop transitions, 11 changer transitions 22/129 dead transitions. [2022-12-13 22:04:06,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 1657 flow [2022-12-13 22:04:06,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:04:06,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 22:04:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1294 transitions. [2022-12-13 22:04:06,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781966001478197 [2022-12-13 22:04:06,703 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1294 transitions. [2022-12-13 22:04:06,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1294 transitions. [2022-12-13 22:04:06,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:06,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1294 transitions. [2022-12-13 22:04:06,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 117.63636363636364) internal successors, (1294), 11 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,707 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,707 INFO L175 Difference]: Start difference. First operand has 123 places, 110 transitions, 1382 flow. Second operand 11 states and 1294 transitions. [2022-12-13 22:04:06,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 1657 flow [2022-12-13 22:04:06,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 129 transitions, 1557 flow, removed 9 selfloop flow, removed 16 redundant places. [2022-12-13 22:04:06,720 INFO L231 Difference]: Finished difference. Result has 112 places, 92 transitions, 1027 flow [2022-12-13 22:04:06,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1027, PETRI_PLACES=112, PETRI_TRANSITIONS=92} [2022-12-13 22:04:06,721 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 65 predicate places. [2022-12-13 22:04:06,721 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 92 transitions, 1027 flow [2022-12-13 22:04:06,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:06,721 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] [2022-12-13 22:04:06,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 22:04:06,722 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:06,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1510326518, now seen corresponding path program 31 times [2022-12-13 22:04:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:06,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9628923] [2022-12-13 22:04:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:06,898 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 22:04:06,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9628923] [2022-12-13 22:04:06,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9628923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:06,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:06,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820812287] [2022-12-13 22:04:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:06,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:06,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:06,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:06,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:06,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:06,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 92 transitions, 1027 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:06,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:06,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:06,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:07,078 INFO L130 PetriNetUnfolder]: 153/396 cut-off events. [2022-12-13 22:04:07,079 INFO L131 PetriNetUnfolder]: For 3538/3638 co-relation queries the response was YES. [2022-12-13 22:04:07,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2164 conditions, 396 events. 153/396 cut-off events. For 3538/3638 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1728 event pairs, 12 based on Foata normal form. 66/462 useless extension candidates. Maximal degree in co-relation 2133. Up to 105 conditions per place. [2022-12-13 22:04:07,080 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 41 selfloop transitions, 17 changer transitions 25/91 dead transitions. [2022-12-13 22:04:07,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 91 transitions, 968 flow [2022-12-13 22:04:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 22:04:07,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 22:04:07,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1188 transitions. [2022-12-13 22:04:07,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48292682926829267 [2022-12-13 22:04:07,082 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1188 transitions. [2022-12-13 22:04:07,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1188 transitions. [2022-12-13 22:04:07,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:07,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1188 transitions. [2022-12-13 22:04:07,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.8) internal successors, (1188), 10 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,084 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 246.0) internal successors, (2706), 11 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,084 INFO L175 Difference]: Start difference. First operand has 112 places, 92 transitions, 1027 flow. Second operand 10 states and 1188 transitions. [2022-12-13 22:04:07,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 91 transitions, 968 flow [2022-12-13 22:04:07,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 91 transitions, 763 flow, removed 37 selfloop flow, removed 23 redundant places. [2022-12-13 22:04:07,089 INFO L231 Difference]: Finished difference. Result has 89 places, 49 transitions, 360 flow [2022-12-13 22:04:07,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=360, PETRI_PLACES=89, PETRI_TRANSITIONS=49} [2022-12-13 22:04:07,090 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2022-12-13 22:04:07,090 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 49 transitions, 360 flow [2022-12-13 22:04:07,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,090 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:07,090 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] [2022-12-13 22:04:07,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 22:04:07,090 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:07,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:07,091 INFO L85 PathProgramCache]: Analyzing trace with hash 202647634, now seen corresponding path program 32 times [2022-12-13 22:04:07,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:07,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28969107] [2022-12-13 22:04:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:07,195 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 22:04:07,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:07,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28969107] [2022-12-13 22:04:07,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28969107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:07,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:07,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:04:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443864327] [2022-12-13 22:04:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:04:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:07,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:04:07,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:04:07,212 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:07,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 49 transitions, 360 flow. Second operand has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:07,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:07,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:07,304 INFO L130 PetriNetUnfolder]: 59/170 cut-off events. [2022-12-13 22:04:07,304 INFO L131 PetriNetUnfolder]: For 765/777 co-relation queries the response was YES. [2022-12-13 22:04:07,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 170 events. 59/170 cut-off events. For 765/777 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 484 event pairs, 2 based on Foata normal form. 12/182 useless extension candidates. Maximal degree in co-relation 747. Up to 42 conditions per place. [2022-12-13 22:04:07,304 INFO L137 encePairwiseOnDemand]: 236/246 looper letters, 38 selfloop transitions, 15 changer transitions 5/66 dead transitions. [2022-12-13 22:04:07,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 66 transitions, 521 flow [2022-12-13 22:04:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:04:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 22:04:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 946 transitions. [2022-12-13 22:04:07,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4806910569105691 [2022-12-13 22:04:07,306 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 946 transitions. [2022-12-13 22:04:07,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 946 transitions. [2022-12-13 22:04:07,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:07,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 946 transitions. [2022-12-13 22:04:07,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.25) internal successors, (946), 8 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 22:04:07,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,308 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 246.0) internal successors, (2214), 9 states have internal predecessors, (2214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,308 INFO L175 Difference]: Start difference. First operand has 89 places, 49 transitions, 360 flow. Second operand 8 states and 946 transitions. [2022-12-13 22:04:07,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 66 transitions, 521 flow [2022-12-13 22:04:07,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 403 flow, removed 26 selfloop flow, removed 19 redundant places. [2022-12-13 22:04:07,310 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 242 flow [2022-12-13 22:04:07,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=242, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2022-12-13 22:04:07,310 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2022-12-13 22:04:07,310 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 242 flow [2022-12-13 22:04:07,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.625) internal successors, (917), 8 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:04:07,311 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] [2022-12-13 22:04:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 22:04:07,311 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 22:04:07,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1429913902, now seen corresponding path program 33 times [2022-12-13 22:04:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:04:07,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084865445] [2022-12-13 22:04:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:04:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:07,416 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 22:04:07,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:04:07,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084865445] [2022-12-13 22:04:07,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084865445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:07,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:07,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 22:04:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409129776] [2022-12-13 22:04:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:07,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:04:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:04:07,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 22:04:07,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 242 flow. Second operand has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:04:07,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 22:04:07,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:04:07,504 INFO L130 PetriNetUnfolder]: 36/103 cut-off events. [2022-12-13 22:04:07,504 INFO L131 PetriNetUnfolder]: For 260/260 co-relation queries the response was YES. [2022-12-13 22:04:07,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 103 events. 36/103 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 287 event pairs, 0 based on Foata normal form. 4/107 useless extension candidates. Maximal degree in co-relation 385. Up to 23 conditions per place. [2022-12-13 22:04:07,504 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2022-12-13 22:04:07,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 43 transitions, 290 flow [2022-12-13 22:04:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:04:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 22:04:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1037 transitions. [2022-12-13 22:04:07,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46838301716350494 [2022-12-13 22:04:07,506 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1037 transitions. [2022-12-13 22:04:07,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1037 transitions. [2022-12-13 22:04:07,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:04:07,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1037 transitions. [2022-12-13 22:04:07,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.22222222222223) internal successors, (1037), 9 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,508 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,508 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 242 flow. Second operand 9 states and 1037 transitions. [2022-12-13 22:04:07,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 43 transitions, 290 flow [2022-12-13 22:04:07,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 218 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-12-13 22:04:07,509 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-12-13 22:04:07,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-12-13 22:04:07,510 INFO L288 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2022-12-13 22:04:07,510 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-12-13 22:04:07,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 114.22222222222223) internal successors, (1028), 9 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:04:07,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-13 22:04:07,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-13 22:04:07,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-13 22:04:07,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-13 22:04:07,512 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-13 22:04:07,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 22:04:07,513 INFO L445 BasicCegarLoop]: Path program histogram: [33] [2022-12-13 22:04:07,515 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 22:04:07,515 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:04:07,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:04:07 BasicIcfg [2022-12-13 22:04:07,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:04:07,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:04:07,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:04:07,517 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:04:07,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:03:32" (3/4) ... [2022-12-13 22:04:07,520 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 22:04:07,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 22:04:07,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 22:04:07,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 22:04:07,524 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-12-13 22:04:07,526 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-13 22:04:07,527 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 22:04:07,527 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 22:04:07,527 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 22:04:07,548 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:04:07,548 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:04:07,549 INFO L158 Benchmark]: Toolchain (without parser) took 35596.05ms. Allocated memory was 113.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 78.1MB in the beginning and 787.7MB in the end (delta: -709.6MB). Peak memory consumption was 962.8MB. Max. memory is 16.1GB. [2022-12-13 22:04:07,549 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:04:07,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.59ms. Allocated memory is still 113.2MB. Free memory was 78.1MB in the beginning and 63.0MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 22:04:07,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.59ms. Allocated memory is still 113.2MB. Free memory was 63.0MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:04:07,549 INFO L158 Benchmark]: Boogie Preprocessor took 18.46ms. Allocated memory is still 113.2MB. Free memory was 61.0MB in the beginning and 59.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:04:07,549 INFO L158 Benchmark]: RCFGBuilder took 471.68ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 59.2MB in the beginning and 109.9MB in the end (delta: -50.6MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2022-12-13 22:04:07,550 INFO L158 Benchmark]: TraceAbstraction took 34795.02ms. Allocated memory was 146.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 109.2MB in the beginning and 790.8MB in the end (delta: -681.7MB). Peak memory consumption was 956.6MB. Max. memory is 16.1GB. [2022-12-13 22:04:07,550 INFO L158 Benchmark]: Witness Printer took 30.92ms. Allocated memory is still 1.8GB. Free memory was 790.8MB in the beginning and 787.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:04:07,551 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.59ms. Allocated memory is still 113.2MB. Free memory was 78.1MB in the beginning and 63.0MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.59ms. Allocated memory is still 113.2MB. Free memory was 63.0MB in the beginning and 61.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.46ms. Allocated memory is still 113.2MB. Free memory was 61.0MB in the beginning and 59.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.68ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 59.2MB in the beginning and 109.9MB in the end (delta: -50.6MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * TraceAbstraction took 34795.02ms. Allocated memory was 146.8MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 109.2MB in the beginning and 790.8MB in the end (delta: -681.7MB). Peak memory consumption was 956.6MB. Max. memory is 16.1GB. * Witness Printer took 30.92ms. Allocated memory is still 1.8GB. Free memory was 790.8MB in the beginning and 787.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 136 PlacesBefore, 47 PlacesAfterwards, 125 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 104 TotalNumberOfCompositions, 7260 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3273, independent: 3007, independent conditional: 0, independent unconditional: 3007, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 639, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3273, independent: 2393, independent conditional: 0, independent unconditional: 2393, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 639, unknown conditional: 0, unknown unconditional: 639] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 138, Positive conditional cache size: 0, Positive unconditional cache size: 138, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.7s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2784 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2533 mSDsluCounter, 1135 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1104 mSDsCounter, 785 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12832 IncrementalHoareTripleChecker+Invalid, 13617 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 785 mSolverCounterUnsat, 31 mSDtfsCounter, 12832 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4308occurred in iteration=13, InterpolantAutomatonStates: 357, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 1122 NumberOfCodeBlocks, 1122 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 1089 ConstructedInterpolants, 0 QuantifiedInterpolants, 4123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 22:04:07,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f1c4a1-7af7-4cf6-8ddd-6c5f0b96c852/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE