./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i --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_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/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_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/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_bf4a9296-a30a-4153-b4c9-935523d8ca48/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 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 --- 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 10:56:49,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:56:49,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:56:49,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:56:49,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:56:49,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:56:49,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:56:49,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:56:49,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:56:49,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:56:49,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:56:49,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:56:49,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:56:49,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:56:49,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:56:49,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:56:49,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:56:49,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:56:49,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:56:49,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:56:49,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:56:49,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:56:49,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:56:49,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:56:49,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:56:49,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:56:49,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:56:49,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:56:49,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:56:49,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:56:49,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:56:49,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:56:49,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:56:49,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:56:49,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:56:49,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:56:49,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:56:49,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:56:49,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:56:49,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:56:49,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:56:49,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 10:56:49,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:56:49,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:56:49,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:56:49,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:56:49,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 10:56:49,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 10:56:49,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:56:49,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:56:49,953 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:56:49,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:56:49,953 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:56:49,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:56:49,954 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:56:49,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:56:49,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:56:49,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:56:49,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:56:49,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:56:49,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:56:49,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:56:49,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:56:49,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:56:49,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:56:49,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 10:56:49,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 10:56:49,956 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 10:56:49,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 10:56:49,956 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 10:56:49,956 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_bf4a9296-a30a-4153-b4c9-935523d8ca48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8131f8693d82039b4018f716a17d0a3e1038ace11c7bb21b12bc911efac3c1 [2022-12-13 10:56:50,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:56:50,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:56:50,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:56:50,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:56:50,143 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:56:50,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-12-13 10:56:52,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:56:52,894 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:56:52,895 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i [2022-12-13 10:56:52,907 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/data/654ec0ff2/6828495046094e34974b4f28a4c2bce4/FLAGd2b2de72e [2022-12-13 10:56:53,241 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/data/654ec0ff2/6828495046094e34974b4f28a4c2bce4 [2022-12-13 10:56:53,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:56:53,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:56:53,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:56:53,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:56:53,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:56:53,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a140035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53, skipping insertion in model container [2022-12-13 10:56:53,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:56:53,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:56:53,384 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_bf4a9296-a30a-4153-b4c9-935523d8ca48/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-12-13 10:56:53,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,491 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,501 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,502 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,510 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:56:53,527 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:56:53,535 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_bf4a9296-a30a-4153-b4c9-935523d8ca48/sv-benchmarks/c/pthread-wmm/mix053_tso.oepc.i[949,962] [2022-12-13 10:56:53,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,550 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,551 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,552 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,553 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,554 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,555 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,557 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,558 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,559 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,560 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,561 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,564 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:56:53,569 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:56:53,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:56:53,591 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:56:53,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53 WrapperNode [2022-12-13 10:56:53,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:56:53,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:56:53,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:56:53,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:56:53,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,632 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 158 [2022-12-13 10:56:53,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:56:53,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:56:53,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:56:53,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:56:53,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:56:53,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:56:53,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:56:53,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:56:53,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (1/1) ... [2022-12-13 10:56:53,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:56:53,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:53,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:53,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 10:56:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 10:56:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 10:56:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:56:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:56:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:56:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 10:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 10:56:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 10:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 10:56:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 10:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 10:56:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 10:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 10:56:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:56:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 10:56:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:56:53,722 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 10:56:53,824 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:56:53,827 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:56:54,088 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:56:54,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:56:54,167 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 10:56:54,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:54 BoogieIcfgContainer [2022-12-13 10:56:54,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:56:54,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:56:54,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:56:54,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:56:54,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:56:53" (1/3) ... [2022-12-13 10:56:54,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e915580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:56:54, skipping insertion in model container [2022-12-13 10:56:54,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:53" (2/3) ... [2022-12-13 10:56:54,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e915580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:56:54, skipping insertion in model container [2022-12-13 10:56:54,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:54" (3/3) ... [2022-12-13 10:56:54,176 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053_tso.oepc.i [2022-12-13 10:56:54,182 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 10:56:54,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:56:54,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 10:56:54,191 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 10:56:54,232 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 10:56:54,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 134 transitions, 288 flow [2022-12-13 10:56:54,296 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-12-13 10:56:54,297 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:56:54,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-13 10:56:54,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 134 transitions, 288 flow [2022-12-13 10:56:54,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 130 transitions, 272 flow [2022-12-13 10:56:54,308 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 10:56:54,316 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 130 transitions, 272 flow [2022-12-13 10:56:54,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 130 transitions, 272 flow [2022-12-13 10:56:54,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 272 flow [2022-12-13 10:56:54,338 INFO L130 PetriNetUnfolder]: 2/130 cut-off events. [2022-12-13 10:56:54,339 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:56:54,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 2/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 90. Up to 2 conditions per place. [2022-12-13 10:56:54,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 3106 [2022-12-13 10:56:58,166 INFO L134 LiptonReduction]: Checked pairs total: 7913 [2022-12-13 10:56:58,166 INFO L136 LiptonReduction]: Total number of compositions: 116 [2022-12-13 10:56:58,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:56:58,181 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;@6c362346, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 10:56:58,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 10:56:58,185 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-13 10:56:58,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 10:56:58,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:56:58,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:58,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:56:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1790598515, now seen corresponding path program 1 times [2022-12-13 10:56:58,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:58,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851046935] [2022-12-13 10:56:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:58,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:58,491 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 10:56:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:58,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851046935] [2022-12-13 10:56:58,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851046935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:58,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:58,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 10:56:58,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795667558] [2022-12-13 10:56:58,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:58,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 10:56:58,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:58,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 10:56:58,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 10:56:58,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 250 [2022-12-13 10:56:58,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:58,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:56:58,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 250 [2022-12-13 10:56:58,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:56:59,075 INFO L130 PetriNetUnfolder]: 2855/4117 cut-off events. [2022-12-13 10:56:59,075 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 10:56:59,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 4117 events. 2855/4117 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 20975 event pairs, 785 based on Foata normal form. 0/3909 useless extension candidates. Maximal degree in co-relation 8181. Up to 3103 conditions per place. [2022-12-13 10:56:59,093 INFO L137 encePairwiseOnDemand]: 247/250 looper letters, 33 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2022-12-13 10:56:59,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 171 flow [2022-12-13 10:56:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:56:59,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:56:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2022-12-13 10:56:59,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2022-12-13 10:56:59,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2022-12-13 10:56:59,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2022-12-13 10:56:59,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:56:59,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2022-12-13 10:56:59,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:59,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:59,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:59,115 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 68 flow. Second operand 3 states and 395 transitions. [2022-12-13 10:56:59,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 171 flow [2022-12-13 10:56:59,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 10:56:59,119 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 64 flow [2022-12-13 10:56:59,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2022-12-13 10:56:59,132 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -3 predicate places. [2022-12-13 10:56:59,132 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 64 flow [2022-12-13 10:56:59,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:59,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:56:59,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:56:59,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:56:59,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:56:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1619389034, now seen corresponding path program 1 times [2022-12-13 10:56:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:59,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119613649] [2022-12-13 10:56:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:59,777 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 10:56:59,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:59,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119613649] [2022-12-13 10:56:59,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119613649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:59,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:59,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 10:56:59,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726864651] [2022-12-13 10:56:59,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:59,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:56:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:56:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:56:59,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 250 [2022-12-13 10:56:59,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:56:59,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:56:59,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 250 [2022-12-13 10:56:59,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:00,770 INFO L130 PetriNetUnfolder]: 6718/9647 cut-off events. [2022-12-13 10:57:00,771 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2022-12-13 10:57:00,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19736 conditions, 9647 events. 6718/9647 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 53824 event pairs, 506 based on Foata normal form. 250/9897 useless extension candidates. Maximal degree in co-relation 19726. Up to 6985 conditions per place. [2022-12-13 10:57:00,818 INFO L137 encePairwiseOnDemand]: 239/250 looper letters, 50 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2022-12-13 10:57:00,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 276 flow [2022-12-13 10:57:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2022-12-13 10:57:00,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 10:57:00,822 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 500 transitions. [2022-12-13 10:57:00,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 500 transitions. [2022-12-13 10:57:00,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:00,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 500 transitions. [2022-12-13 10:57:00,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:00,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:00,828 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:00,828 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 64 flow. Second operand 4 states and 500 transitions. [2022-12-13 10:57:00,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 276 flow [2022-12-13 10:57:00,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 10:57:00,830 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 137 flow [2022-12-13 10:57:00,831 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2022-12-13 10:57:00,831 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2022-12-13 10:57:00,832 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 137 flow [2022-12-13 10:57:00,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:00,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:00,832 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:00,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:57:00,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:00,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1338549833, now seen corresponding path program 1 times [2022-12-13 10:57:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:00,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742076122] [2022-12-13 10:57:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:01,162 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 10:57:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:01,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742076122] [2022-12-13 10:57:01,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742076122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:01,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:01,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 10:57:01,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100551276] [2022-12-13 10:57:01,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:01,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:57:01,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:57:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:57:01,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 250 [2022-12-13 10:57:01,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:01,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:01,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 250 [2022-12-13 10:57:01,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:02,077 INFO L130 PetriNetUnfolder]: 7011/10033 cut-off events. [2022-12-13 10:57:02,078 INFO L131 PetriNetUnfolder]: For 3793/3819 co-relation queries the response was YES. [2022-12-13 10:57:02,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26684 conditions, 10033 events. 7011/10033 cut-off events. For 3793/3819 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 54745 event pairs, 2315 based on Foata normal form. 42/9901 useless extension candidates. Maximal degree in co-relation 26672. Up to 8615 conditions per place. [2022-12-13 10:57:02,114 INFO L137 encePairwiseOnDemand]: 245/250 looper letters, 42 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2022-12-13 10:57:02,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 296 flow [2022-12-13 10:57:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 10:57:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 10:57:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-12-13 10:57:02,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5213333333333333 [2022-12-13 10:57:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-12-13 10:57:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-12-13 10:57:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:02,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-12-13 10:57:02,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:02,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:02,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:02,118 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 137 flow. Second operand 3 states and 391 transitions. [2022-12-13 10:57:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 296 flow [2022-12-13 10:57:02,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:57:02,120 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 187 flow [2022-12-13 10:57:02,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2022-12-13 10:57:02,120 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2022-12-13 10:57:02,120 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 187 flow [2022-12-13 10:57:02,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:02,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:02,121 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:02,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 10:57:02,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:02,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:02,121 INFO L85 PathProgramCache]: Analyzing trace with hash 136273607, now seen corresponding path program 1 times [2022-12-13 10:57:02,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:02,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586412643] [2022-12-13 10:57:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:02,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:02,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586412643] [2022-12-13 10:57:02,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586412643] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:02,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:02,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 10:57:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202965261] [2022-12-13 10:57:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:02,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:57:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:02,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:57:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:57:02,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 250 [2022-12-13 10:57:02,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:02,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:02,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 250 [2022-12-13 10:57:02,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:03,283 INFO L130 PetriNetUnfolder]: 7117/10178 cut-off events. [2022-12-13 10:57:03,283 INFO L131 PetriNetUnfolder]: For 6921/7058 co-relation queries the response was YES. [2022-12-13 10:57:03,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29577 conditions, 10178 events. 7117/10178 cut-off events. For 6921/7058 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 55347 event pairs, 1637 based on Foata normal form. 113/10181 useless extension candidates. Maximal degree in co-relation 29562. Up to 7388 conditions per place. [2022-12-13 10:57:03,328 INFO L137 encePairwiseOnDemand]: 243/250 looper letters, 56 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2022-12-13 10:57:03,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 77 transitions, 470 flow [2022-12-13 10:57:03,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 523 transitions. [2022-12-13 10:57:03,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.523 [2022-12-13 10:57:03,330 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 523 transitions. [2022-12-13 10:57:03,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 523 transitions. [2022-12-13 10:57:03,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:03,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 523 transitions. [2022-12-13 10:57:03,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:03,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:03,334 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:03,334 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 187 flow. Second operand 4 states and 523 transitions. [2022-12-13 10:57:03,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 77 transitions, 470 flow [2022-12-13 10:57:03,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 77 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 10:57:03,337 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 298 flow [2022-12-13 10:57:03,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2022-12-13 10:57:03,337 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2022-12-13 10:57:03,338 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 298 flow [2022-12-13 10:57:03,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:03,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:03,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:03,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:57:03,338 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:03,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash 136154567, now seen corresponding path program 2 times [2022-12-13 10:57:03,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:03,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664705318] [2022-12-13 10:57:03,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:03,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:03,713 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 10:57:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664705318] [2022-12-13 10:57:03,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664705318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:03,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:03,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:03,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270875933] [2022-12-13 10:57:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:03,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 250 [2022-12-13 10:57:03,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:03,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:03,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 250 [2022-12-13 10:57:03,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:04,666 INFO L130 PetriNetUnfolder]: 7127/10187 cut-off events. [2022-12-13 10:57:04,666 INFO L131 PetriNetUnfolder]: For 13850/14077 co-relation queries the response was YES. [2022-12-13 10:57:04,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33905 conditions, 10187 events. 7127/10187 cut-off events. For 13850/14077 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 55017 event pairs, 1756 based on Foata normal form. 203/10280 useless extension candidates. Maximal degree in co-relation 33887. Up to 7416 conditions per place. [2022-12-13 10:57:04,702 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 58 selfloop transitions, 19 changer transitions 0/83 dead transitions. [2022-12-13 10:57:04,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 83 transitions, 608 flow [2022-12-13 10:57:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 519 transitions. [2022-12-13 10:57:04,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.519 [2022-12-13 10:57:04,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 519 transitions. [2022-12-13 10:57:04,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 519 transitions. [2022-12-13 10:57:04,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:04,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 519 transitions. [2022-12-13 10:57:04,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:04,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:04,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:04,707 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 298 flow. Second operand 4 states and 519 transitions. [2022-12-13 10:57:04,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 83 transitions, 608 flow [2022-12-13 10:57:04,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 591 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 10:57:04,712 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 392 flow [2022-12-13 10:57:04,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=392, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2022-12-13 10:57:04,713 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2022-12-13 10:57:04,713 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 392 flow [2022-12-13 10:57:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:04,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:04,714 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:04,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:57:04,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 136276025, now seen corresponding path program 1 times [2022-12-13 10:57:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:04,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643018141] [2022-12-13 10:57:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:05,018 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 10:57:05,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:05,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643018141] [2022-12-13 10:57:05,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643018141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:05,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:05,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:05,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482763533] [2022-12-13 10:57:05,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:05,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:05,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 250 [2022-12-13 10:57:05,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:05,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:05,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 250 [2022-12-13 10:57:05,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:06,306 INFO L130 PetriNetUnfolder]: 7463/10717 cut-off events. [2022-12-13 10:57:06,306 INFO L131 PetriNetUnfolder]: For 21249/21525 co-relation queries the response was YES. [2022-12-13 10:57:06,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37216 conditions, 10717 events. 7463/10717 cut-off events. For 21249/21525 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 58941 event pairs, 1875 based on Foata normal form. 326/10957 useless extension candidates. Maximal degree in co-relation 37196. Up to 8387 conditions per place. [2022-12-13 10:57:06,346 INFO L137 encePairwiseOnDemand]: 243/250 looper letters, 69 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2022-12-13 10:57:06,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 89 transitions, 707 flow [2022-12-13 10:57:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 519 transitions. [2022-12-13 10:57:06,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.519 [2022-12-13 10:57:06,349 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 519 transitions. [2022-12-13 10:57:06,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 519 transitions. [2022-12-13 10:57:06,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:06,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 519 transitions. [2022-12-13 10:57:06,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.75) internal successors, (519), 4 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:06,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:06,351 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:06,351 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 392 flow. Second operand 4 states and 519 transitions. [2022-12-13 10:57:06,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 89 transitions, 707 flow [2022-12-13 10:57:06,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 688 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 10:57:06,361 INFO L231 Difference]: Finished difference. Result has 54 places, 65 transitions, 511 flow [2022-12-13 10:57:06,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=511, PETRI_PLACES=54, PETRI_TRANSITIONS=65} [2022-12-13 10:57:06,362 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2022-12-13 10:57:06,362 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 65 transitions, 511 flow [2022-12-13 10:57:06,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:06,362 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:06,362 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:06,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 10:57:06,362 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 136229525, now seen corresponding path program 2 times [2022-12-13 10:57:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:06,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011453474] [2022-12-13 10:57:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:06,663 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 10:57:06,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:06,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011453474] [2022-12-13 10:57:06,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011453474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:06,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:06,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:06,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983544746] [2022-12-13 10:57:06,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:06,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:06,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:06,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:06,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:06,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2022-12-13 10:57:06,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 511 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:06,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:06,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2022-12-13 10:57:06,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:07,661 INFO L130 PetriNetUnfolder]: 7413/10670 cut-off events. [2022-12-13 10:57:07,661 INFO L131 PetriNetUnfolder]: For 32993/33297 co-relation queries the response was YES. [2022-12-13 10:57:07,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40861 conditions, 10670 events. 7413/10670 cut-off events. For 32993/33297 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 59170 event pairs, 1869 based on Foata normal form. 341/10925 useless extension candidates. Maximal degree in co-relation 40838. Up to 8068 conditions per place. [2022-12-13 10:57:07,697 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 71 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2022-12-13 10:57:07,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 816 flow [2022-12-13 10:57:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 514 transitions. [2022-12-13 10:57:07,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.514 [2022-12-13 10:57:07,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 514 transitions. [2022-12-13 10:57:07,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 514 transitions. [2022-12-13 10:57:07,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:07,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 514 transitions. [2022-12-13 10:57:07,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:07,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:07,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:07,702 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 511 flow. Second operand 4 states and 514 transitions. [2022-12-13 10:57:07,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 816 flow [2022-12-13 10:57:07,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 94 transitions, 786 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-12-13 10:57:07,724 INFO L231 Difference]: Finished difference. Result has 57 places, 70 transitions, 587 flow [2022-12-13 10:57:07,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=587, PETRI_PLACES=57, PETRI_TRANSITIONS=70} [2022-12-13 10:57:07,725 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2022-12-13 10:57:07,725 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 70 transitions, 587 flow [2022-12-13 10:57:07,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:07,725 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:07,725 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 10:57:07,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:07,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:07,725 INFO L85 PathProgramCache]: Analyzing trace with hash -70488992, now seen corresponding path program 1 times [2022-12-13 10:57:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:07,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930554132] [2022-12-13 10:57:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:07,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:08,033 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 10:57:08,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:08,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930554132] [2022-12-13 10:57:08,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930554132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:08,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:08,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:08,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821542141] [2022-12-13 10:57:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:08,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:08,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 250 [2022-12-13 10:57:08,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 70 transitions, 587 flow. Second operand has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:08,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:08,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 250 [2022-12-13 10:57:08,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:09,107 INFO L130 PetriNetUnfolder]: 7624/10980 cut-off events. [2022-12-13 10:57:09,107 INFO L131 PetriNetUnfolder]: For 43689/43993 co-relation queries the response was YES. [2022-12-13 10:57:09,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43796 conditions, 10980 events. 7624/10980 cut-off events. For 43689/43993 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 60898 event pairs, 1507 based on Foata normal form. 317/11215 useless extension candidates. Maximal degree in co-relation 43771. Up to 7932 conditions per place. [2022-12-13 10:57:09,151 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 75 selfloop transitions, 23 changer transitions 0/104 dead transitions. [2022-12-13 10:57:09,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 104 transitions, 989 flow [2022-12-13 10:57:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 524 transitions. [2022-12-13 10:57:09,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.524 [2022-12-13 10:57:09,153 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 524 transitions. [2022-12-13 10:57:09,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 524 transitions. [2022-12-13 10:57:09,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:09,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 524 transitions. [2022-12-13 10:57:09,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:09,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:09,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:09,155 INFO L175 Difference]: Start difference. First operand has 57 places, 70 transitions, 587 flow. Second operand 4 states and 524 transitions. [2022-12-13 10:57:09,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 104 transitions, 989 flow [2022-12-13 10:57:09,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 104 transitions, 953 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 10:57:09,177 INFO L231 Difference]: Finished difference. Result has 59 places, 76 transitions, 690 flow [2022-12-13 10:57:09,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=690, PETRI_PLACES=59, PETRI_TRANSITIONS=76} [2022-12-13 10:57:09,178 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2022-12-13 10:57:09,178 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 76 transitions, 690 flow [2022-12-13 10:57:09,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:09,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:09,179 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:09,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:57:09,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash -74297342, now seen corresponding path program 2 times [2022-12-13 10:57:09,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:09,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388684720] [2022-12-13 10:57:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:09,623 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 10:57:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:09,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388684720] [2022-12-13 10:57:09,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388684720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:09,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:09,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414883526] [2022-12-13 10:57:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:09,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:57:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:57:09,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:57:09,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 250 [2022-12-13 10:57:09,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 76 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:09,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:09,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 250 [2022-12-13 10:57:09,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:11,000 INFO L130 PetriNetUnfolder]: 7565/10912 cut-off events. [2022-12-13 10:57:11,001 INFO L131 PetriNetUnfolder]: For 51101/51462 co-relation queries the response was YES. [2022-12-13 10:57:11,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45343 conditions, 10912 events. 7565/10912 cut-off events. For 51101/51462 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 60724 event pairs, 1463 based on Foata normal form. 377/11207 useless extension candidates. Maximal degree in co-relation 45317. Up to 7920 conditions per place. [2022-12-13 10:57:11,055 INFO L137 encePairwiseOnDemand]: 245/250 looper letters, 75 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2022-12-13 10:57:11,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 106 transitions, 1064 flow [2022-12-13 10:57:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:11,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 524 transitions. [2022-12-13 10:57:11,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.524 [2022-12-13 10:57:11,057 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 524 transitions. [2022-12-13 10:57:11,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 524 transitions. [2022-12-13 10:57:11,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:11,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 524 transitions. [2022-12-13 10:57:11,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:11,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:11,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:11,060 INFO L175 Difference]: Start difference. First operand has 59 places, 76 transitions, 690 flow. Second operand 4 states and 524 transitions. [2022-12-13 10:57:11,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 106 transitions, 1064 flow [2022-12-13 10:57:11,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 1004 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-12-13 10:57:11,096 INFO L231 Difference]: Finished difference. Result has 61 places, 80 transitions, 764 flow [2022-12-13 10:57:11,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=764, PETRI_PLACES=61, PETRI_TRANSITIONS=80} [2022-12-13 10:57:11,097 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2022-12-13 10:57:11,097 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 80 transitions, 764 flow [2022-12-13 10:57:11,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.33333333333333) internal successors, (722), 6 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:11,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:11,097 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:11,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 10:57:11,097 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:11,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:11,098 INFO L85 PathProgramCache]: Analyzing trace with hash -70486605, now seen corresponding path program 1 times [2022-12-13 10:57:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:11,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710660992] [2022-12-13 10:57:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:11,554 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 10:57:11,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:11,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710660992] [2022-12-13 10:57:11,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710660992] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:11,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:11,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:11,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299415070] [2022-12-13 10:57:11,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:11,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:11,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2022-12-13 10:57:11,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 80 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:11,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:11,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2022-12-13 10:57:11,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:12,800 INFO L130 PetriNetUnfolder]: 8059/11565 cut-off events. [2022-12-13 10:57:12,800 INFO L131 PetriNetUnfolder]: For 59449/60004 co-relation queries the response was YES. [2022-12-13 10:57:12,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49160 conditions, 11565 events. 8059/11565 cut-off events. For 59449/60004 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 64906 event pairs, 1788 based on Foata normal form. 451/11843 useless extension candidates. Maximal degree in co-relation 49133. Up to 8224 conditions per place. [2022-12-13 10:57:12,849 INFO L137 encePairwiseOnDemand]: 242/250 looper letters, 83 selfloop transitions, 31 changer transitions 0/120 dead transitions. [2022-12-13 10:57:12,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 1214 flow [2022-12-13 10:57:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:57:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 627 transitions. [2022-12-13 10:57:12,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5016 [2022-12-13 10:57:12,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 627 transitions. [2022-12-13 10:57:12,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 627 transitions. [2022-12-13 10:57:12,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:12,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 627 transitions. [2022-12-13 10:57:12,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:12,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:12,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:12,854 INFO L175 Difference]: Start difference. First operand has 61 places, 80 transitions, 764 flow. Second operand 5 states and 627 transitions. [2022-12-13 10:57:12,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 1214 flow [2022-12-13 10:57:12,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 1179 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-12-13 10:57:12,897 INFO L231 Difference]: Finished difference. Result has 65 places, 88 transitions, 911 flow [2022-12-13 10:57:12,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=65, PETRI_TRANSITIONS=88} [2022-12-13 10:57:12,897 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2022-12-13 10:57:12,898 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 88 transitions, 911 flow [2022-12-13 10:57:12,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:12,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:12,898 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:12,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 10:57:12,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:12,899 INFO L85 PathProgramCache]: Analyzing trace with hash -74223345, now seen corresponding path program 2 times [2022-12-13 10:57:12,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:12,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438502610] [2022-12-13 10:57:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:57:13,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:13,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438502610] [2022-12-13 10:57:13,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438502610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:13,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:13,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031243526] [2022-12-13 10:57:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:13,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:57:13,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:13,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:57:13,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:57:13,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 250 [2022-12-13 10:57:13,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 88 transitions, 911 flow. Second operand has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:13,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:13,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 250 [2022-12-13 10:57:13,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:14,774 INFO L130 PetriNetUnfolder]: 9340/12985 cut-off events. [2022-12-13 10:57:14,774 INFO L131 PetriNetUnfolder]: For 70418/70663 co-relation queries the response was YES. [2022-12-13 10:57:14,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57622 conditions, 12985 events. 9340/12985 cut-off events. For 70418/70663 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 68158 event pairs, 1100 based on Foata normal form. 285/13269 useless extension candidates. Maximal degree in co-relation 57593. Up to 9950 conditions per place. [2022-12-13 10:57:14,821 INFO L137 encePairwiseOnDemand]: 239/250 looper letters, 115 selfloop transitions, 49 changer transitions 0/166 dead transitions. [2022-12-13 10:57:14,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 166 transitions, 1662 flow [2022-12-13 10:57:14,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:57:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 10:57:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 860 transitions. [2022-12-13 10:57:14,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2022-12-13 10:57:14,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 860 transitions. [2022-12-13 10:57:14,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 860 transitions. [2022-12-13 10:57:14,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:14,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 860 transitions. [2022-12-13 10:57:14,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.85714285714286) internal successors, (860), 7 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:14,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:14,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:14,826 INFO L175 Difference]: Start difference. First operand has 65 places, 88 transitions, 911 flow. Second operand 7 states and 860 transitions. [2022-12-13 10:57:14,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 166 transitions, 1662 flow [2022-12-13 10:57:14,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 166 transitions, 1550 flow, removed 28 selfloop flow, removed 3 redundant places. [2022-12-13 10:57:14,884 INFO L231 Difference]: Finished difference. Result has 71 places, 108 transitions, 1141 flow [2022-12-13 10:57:14,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1141, PETRI_PLACES=71, PETRI_TRANSITIONS=108} [2022-12-13 10:57:14,885 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2022-12-13 10:57:14,885 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 108 transitions, 1141 flow [2022-12-13 10:57:14,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:14,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:14,885 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 10:57:14,886 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:14,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2060456087, now seen corresponding path program 3 times [2022-12-13 10:57:14,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:14,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365217778] [2022-12-13 10:57:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:15,104 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 10:57:15,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:15,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365217778] [2022-12-13 10:57:15,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365217778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:15,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:15,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:15,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639574872] [2022-12-13 10:57:15,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:15,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:57:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:15,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:57:15,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:57:15,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2022-12-13 10:57:15,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 108 transitions, 1141 flow. Second operand has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:15,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:15,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2022-12-13 10:57:15,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:16,550 INFO L130 PetriNetUnfolder]: 9198/13200 cut-off events. [2022-12-13 10:57:16,550 INFO L131 PetriNetUnfolder]: For 108517/109490 co-relation queries the response was YES. [2022-12-13 10:57:16,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64636 conditions, 13200 events. 9198/13200 cut-off events. For 108517/109490 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 75911 event pairs, 1359 based on Foata normal form. 726/13693 useless extension candidates. Maximal degree in co-relation 64604. Up to 8823 conditions per place. [2022-12-13 10:57:16,613 INFO L137 encePairwiseOnDemand]: 242/250 looper letters, 103 selfloop transitions, 35 changer transitions 0/150 dead transitions. [2022-12-13 10:57:16,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 150 transitions, 1696 flow [2022-12-13 10:57:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:57:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 642 transitions. [2022-12-13 10:57:16,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5136 [2022-12-13 10:57:16,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 642 transitions. [2022-12-13 10:57:16,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 642 transitions. [2022-12-13 10:57:16,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:16,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 642 transitions. [2022-12-13 10:57:16,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:16,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:16,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:16,617 INFO L175 Difference]: Start difference. First operand has 71 places, 108 transitions, 1141 flow. Second operand 5 states and 642 transitions. [2022-12-13 10:57:16,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 150 transitions, 1696 flow [2022-12-13 10:57:16,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 150 transitions, 1610 flow, removed 22 selfloop flow, removed 2 redundant places. [2022-12-13 10:57:16,733 INFO L231 Difference]: Finished difference. Result has 75 places, 116 transitions, 1303 flow [2022-12-13 10:57:16,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1303, PETRI_PLACES=75, PETRI_TRANSITIONS=116} [2022-12-13 10:57:16,733 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2022-12-13 10:57:16,733 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 116 transitions, 1303 flow [2022-12-13 10:57:16,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:16,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:16,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:16,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 10:57:16,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:16,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2063639645, now seen corresponding path program 1 times [2022-12-13 10:57:16,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:16,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687413199] [2022-12-13 10:57:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:17,034 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 10:57:17,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:17,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687413199] [2022-12-13 10:57:17,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687413199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:17,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:17,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:17,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632745019] [2022-12-13 10:57:17,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:17,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:57:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:57:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:57:17,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 250 [2022-12-13 10:57:17,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 116 transitions, 1303 flow. Second operand has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:17,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:17,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 250 [2022-12-13 10:57:17,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:18,827 INFO L130 PetriNetUnfolder]: 10063/14459 cut-off events. [2022-12-13 10:57:18,828 INFO L131 PetriNetUnfolder]: For 149385/150146 co-relation queries the response was YES. [2022-12-13 10:57:18,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75716 conditions, 14459 events. 10063/14459 cut-off events. For 149385/150146 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 84529 event pairs, 1877 based on Foata normal form. 359/14539 useless extension candidates. Maximal degree in co-relation 75681. Up to 7492 conditions per place. [2022-12-13 10:57:18,893 INFO L137 encePairwiseOnDemand]: 243/250 looper letters, 89 selfloop transitions, 50 changer transitions 0/151 dead transitions. [2022-12-13 10:57:18,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 151 transitions, 1865 flow [2022-12-13 10:57:18,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:18,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:57:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 622 transitions. [2022-12-13 10:57:18,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4976 [2022-12-13 10:57:18,895 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 622 transitions. [2022-12-13 10:57:18,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 622 transitions. [2022-12-13 10:57:18,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:18,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 622 transitions. [2022-12-13 10:57:18,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:18,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:18,899 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:18,900 INFO L175 Difference]: Start difference. First operand has 75 places, 116 transitions, 1303 flow. Second operand 5 states and 622 transitions. [2022-12-13 10:57:18,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 151 transitions, 1865 flow [2022-12-13 10:57:19,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 151 transitions, 1778 flow, removed 32 selfloop flow, removed 1 redundant places. [2022-12-13 10:57:19,069 INFO L231 Difference]: Finished difference. Result has 79 places, 122 transitions, 1486 flow [2022-12-13 10:57:19,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1486, PETRI_PLACES=79, PETRI_TRANSITIONS=122} [2022-12-13 10:57:19,070 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 38 predicate places. [2022-12-13 10:57:19,070 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 122 transitions, 1486 flow [2022-12-13 10:57:19,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:19,070 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:19,070 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:19,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 10:57:19,070 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2109879028, now seen corresponding path program 1 times [2022-12-13 10:57:19,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:19,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376661589] [2022-12-13 10:57:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:19,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:19,625 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 10:57:19,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:19,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376661589] [2022-12-13 10:57:19,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376661589] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:19,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:19,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397158602] [2022-12-13 10:57:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:19,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:57:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:57:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:57:19,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 250 [2022-12-13 10:57:19,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 122 transitions, 1486 flow. Second operand has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:19,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:19,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 250 [2022-12-13 10:57:19,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:21,890 INFO L130 PetriNetUnfolder]: 14027/19408 cut-off events. [2022-12-13 10:57:21,890 INFO L131 PetriNetUnfolder]: For 168667/168667 co-relation queries the response was YES. [2022-12-13 10:57:21,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98268 conditions, 19408 events. 14027/19408 cut-off events. For 168667/168667 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 105774 event pairs, 1839 based on Foata normal form. 80/19488 useless extension candidates. Maximal degree in co-relation 98231. Up to 15155 conditions per place. [2022-12-13 10:57:21,970 INFO L137 encePairwiseOnDemand]: 238/250 looper letters, 146 selfloop transitions, 87 changer transitions 0/233 dead transitions. [2022-12-13 10:57:21,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 233 transitions, 2733 flow [2022-12-13 10:57:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 10:57:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 10:57:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 967 transitions. [2022-12-13 10:57:21,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4835 [2022-12-13 10:57:21,973 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 967 transitions. [2022-12-13 10:57:21,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 967 transitions. [2022-12-13 10:57:21,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:21,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 967 transitions. [2022-12-13 10:57:21,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.875) internal successors, (967), 8 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:21,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 250.0) internal successors, (2250), 9 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:21,976 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 250.0) internal successors, (2250), 9 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:21,976 INFO L175 Difference]: Start difference. First operand has 79 places, 122 transitions, 1486 flow. Second operand 8 states and 967 transitions. [2022-12-13 10:57:21,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 233 transitions, 2733 flow [2022-12-13 10:57:22,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 233 transitions, 2604 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-12-13 10:57:22,455 INFO L231 Difference]: Finished difference. Result has 86 places, 169 transitions, 2280 flow [2022-12-13 10:57:22,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2280, PETRI_PLACES=86, PETRI_TRANSITIONS=169} [2022-12-13 10:57:22,455 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2022-12-13 10:57:22,456 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 169 transitions, 2280 flow [2022-12-13 10:57:22,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:22,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:22,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:22,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 10:57:22,456 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:22,456 INFO L85 PathProgramCache]: Analyzing trace with hash -551933866, now seen corresponding path program 2 times [2022-12-13 10:57:22,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:22,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479209942] [2022-12-13 10:57:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:22,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:22,777 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 10:57:22,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:22,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479209942] [2022-12-13 10:57:22,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479209942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:22,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:22,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:22,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116637180] [2022-12-13 10:57:22,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:22,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:57:22,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:22,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:57:22,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:22,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2022-12-13 10:57:22,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 169 transitions, 2280 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:22,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:22,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2022-12-13 10:57:22,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:25,265 INFO L130 PetriNetUnfolder]: 11784/16974 cut-off events. [2022-12-13 10:57:25,265 INFO L131 PetriNetUnfolder]: For 186656/187937 co-relation queries the response was YES. [2022-12-13 10:57:25,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97636 conditions, 16974 events. 11784/16974 cut-off events. For 186656/187937 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 102856 event pairs, 2102 based on Foata normal form. 611/17224 useless extension candidates. Maximal degree in co-relation 97597. Up to 11395 conditions per place. [2022-12-13 10:57:25,424 INFO L137 encePairwiseOnDemand]: 242/250 looper letters, 130 selfloop transitions, 48 changer transitions 0/205 dead transitions. [2022-12-13 10:57:25,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 205 transitions, 2875 flow [2022-12-13 10:57:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:57:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 642 transitions. [2022-12-13 10:57:25,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5136 [2022-12-13 10:57:25,426 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 642 transitions. [2022-12-13 10:57:25,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 642 transitions. [2022-12-13 10:57:25,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:25,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 642 transitions. [2022-12-13 10:57:25,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:25,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:25,428 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:25,428 INFO L175 Difference]: Start difference. First operand has 86 places, 169 transitions, 2280 flow. Second operand 5 states and 642 transitions. [2022-12-13 10:57:25,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 205 transitions, 2875 flow [2022-12-13 10:57:25,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 205 transitions, 2731 flow, removed 61 selfloop flow, removed 2 redundant places. [2022-12-13 10:57:25,727 INFO L231 Difference]: Finished difference. Result has 89 places, 173 transitions, 2348 flow [2022-12-13 10:57:25,727 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2348, PETRI_PLACES=89, PETRI_TRANSITIONS=173} [2022-12-13 10:57:25,728 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2022-12-13 10:57:25,728 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 173 transitions, 2348 flow [2022-12-13 10:57:25,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:25,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:25,729 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 10:57:25,729 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1995481588, now seen corresponding path program 3 times [2022-12-13 10:57:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:25,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982350380] [2022-12-13 10:57:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:25,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:26,110 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 10:57:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:26,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982350380] [2022-12-13 10:57:26,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982350380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:26,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:26,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305106720] [2022-12-13 10:57:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:57:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:57:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:26,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2022-12-13 10:57:26,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 173 transitions, 2348 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:26,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:26,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2022-12-13 10:57:26,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:28,729 INFO L130 PetriNetUnfolder]: 12336/17819 cut-off events. [2022-12-13 10:57:28,729 INFO L131 PetriNetUnfolder]: For 215936/217540 co-relation queries the response was YES. [2022-12-13 10:57:28,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104721 conditions, 17819 events. 12336/17819 cut-off events. For 215936/217540 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 109773 event pairs, 2182 based on Foata normal form. 636/18061 useless extension candidates. Maximal degree in co-relation 104679. Up to 9181 conditions per place. [2022-12-13 10:57:28,849 INFO L137 encePairwiseOnDemand]: 242/250 looper letters, 114 selfloop transitions, 95 changer transitions 0/236 dead transitions. [2022-12-13 10:57:28,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 236 transitions, 3358 flow [2022-12-13 10:57:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:57:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:57:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 771 transitions. [2022-12-13 10:57:28,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.514 [2022-12-13 10:57:28,852 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 771 transitions. [2022-12-13 10:57:28,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 771 transitions. [2022-12-13 10:57:28,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:28,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 771 transitions. [2022-12-13 10:57:28,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.5) internal successors, (771), 6 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:28,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:28,855 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:28,855 INFO L175 Difference]: Start difference. First operand has 89 places, 173 transitions, 2348 flow. Second operand 6 states and 771 transitions. [2022-12-13 10:57:28,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 236 transitions, 3358 flow [2022-12-13 10:57:29,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 236 transitions, 3256 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-12-13 10:57:29,327 INFO L231 Difference]: Finished difference. Result has 92 places, 195 transitions, 2937 flow [2022-12-13 10:57:29,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2937, PETRI_PLACES=92, PETRI_TRANSITIONS=195} [2022-12-13 10:57:29,328 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2022-12-13 10:57:29,328 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 195 transitions, 2937 flow [2022-12-13 10:57:29,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:29,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:29,328 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:29,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 10:57:29,328 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:29,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:29,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2112127768, now seen corresponding path program 4 times [2022-12-13 10:57:29,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:29,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231991179] [2022-12-13 10:57:29,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:29,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:29,652 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 10:57:29,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:29,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231991179] [2022-12-13 10:57:29,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231991179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:29,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:29,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:29,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702254675] [2022-12-13 10:57:29,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:29,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:57:29,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:29,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:57:29,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:57:29,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 250 [2022-12-13 10:57:29,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 195 transitions, 2937 flow. Second operand has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:29,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:29,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 250 [2022-12-13 10:57:29,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:32,175 INFO L130 PetriNetUnfolder]: 13496/19686 cut-off events. [2022-12-13 10:57:32,175 INFO L131 PetriNetUnfolder]: For 268822/270317 co-relation queries the response was YES. [2022-12-13 10:57:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118394 conditions, 19686 events. 13496/19686 cut-off events. For 268822/270317 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 125313 event pairs, 2017 based on Foata normal form. 1266/20545 useless extension candidates. Maximal degree in co-relation 118351. Up to 9563 conditions per place. [2022-12-13 10:57:32,291 INFO L137 encePairwiseOnDemand]: 242/250 looper letters, 119 selfloop transitions, 111 changer transitions 0/257 dead transitions. [2022-12-13 10:57:32,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 257 transitions, 3987 flow [2022-12-13 10:57:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:57:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 10:57:32,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 882 transitions. [2022-12-13 10:57:32,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.504 [2022-12-13 10:57:32,293 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 882 transitions. [2022-12-13 10:57:32,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 882 transitions. [2022-12-13 10:57:32,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:32,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 882 transitions. [2022-12-13 10:57:32,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.0) internal successors, (882), 7 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:32,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:32,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:32,296 INFO L175 Difference]: Start difference. First operand has 92 places, 195 transitions, 2937 flow. Second operand 7 states and 882 transitions. [2022-12-13 10:57:32,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 257 transitions, 3987 flow [2022-12-13 10:57:32,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 257 transitions, 3852 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-12-13 10:57:32,694 INFO L231 Difference]: Finished difference. Result has 97 places, 214 transitions, 3558 flow [2022-12-13 10:57:32,694 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=2816, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3558, PETRI_PLACES=97, PETRI_TRANSITIONS=214} [2022-12-13 10:57:32,695 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2022-12-13 10:57:32,695 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 214 transitions, 3558 flow [2022-12-13 10:57:32,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:32,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:32,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 10:57:32,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2112135704, now seen corresponding path program 1 times [2022-12-13 10:57:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:32,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575404887] [2022-12-13 10:57:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:32,819 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 10:57:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575404887] [2022-12-13 10:57:32,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575404887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:32,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:32,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613180849] [2022-12-13 10:57:32,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:32,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:57:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:32,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:57:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:57:32,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2022-12-13 10:57:32,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 214 transitions, 3558 flow. Second operand has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:32,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:32,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2022-12-13 10:57:32,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:35,344 INFO L130 PetriNetUnfolder]: 10708/15892 cut-off events. [2022-12-13 10:57:35,345 INFO L131 PetriNetUnfolder]: For 335899/339997 co-relation queries the response was YES. [2022-12-13 10:57:35,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104851 conditions, 15892 events. 10708/15892 cut-off events. For 335899/339997 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 105909 event pairs, 1218 based on Foata normal form. 3090/18462 useless extension candidates. Maximal degree in co-relation 104806. Up to 7778 conditions per place. [2022-12-13 10:57:35,428 INFO L137 encePairwiseOnDemand]: 243/250 looper letters, 339 selfloop transitions, 6 changer transitions 0/377 dead transitions. [2022-12-13 10:57:35,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 377 transitions, 7281 flow [2022-12-13 10:57:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 505 transitions. [2022-12-13 10:57:35,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.505 [2022-12-13 10:57:35,430 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 505 transitions. [2022-12-13 10:57:35,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 505 transitions. [2022-12-13 10:57:35,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:35,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 505 transitions. [2022-12-13 10:57:35,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:35,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:35,432 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:35,432 INFO L175 Difference]: Start difference. First operand has 97 places, 214 transitions, 3558 flow. Second operand 4 states and 505 transitions. [2022-12-13 10:57:35,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 377 transitions, 7281 flow [2022-12-13 10:57:35,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 377 transitions, 6865 flow, removed 104 selfloop flow, removed 4 redundant places. [2022-12-13 10:57:35,688 INFO L231 Difference]: Finished difference. Result has 98 places, 205 transitions, 3283 flow [2022-12-13 10:57:35,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3283, PETRI_PLACES=98, PETRI_TRANSITIONS=205} [2022-12-13 10:57:35,688 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2022-12-13 10:57:35,688 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 205 transitions, 3283 flow [2022-12-13 10:57:35,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:35,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:35,689 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:35,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 10:57:35,689 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1895181122, now seen corresponding path program 1 times [2022-12-13 10:57:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:35,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191043385] [2022-12-13 10:57:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:35,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:35,788 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 10:57:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:35,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191043385] [2022-12-13 10:57:35,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191043385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:35,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:35,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:35,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107841205] [2022-12-13 10:57:35,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:35,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:35,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:35,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2022-12-13 10:57:35,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 205 transitions, 3283 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:35,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:35,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2022-12-13 10:57:35,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:37,667 INFO L130 PetriNetUnfolder]: 8406/12808 cut-off events. [2022-12-13 10:57:37,668 INFO L131 PetriNetUnfolder]: For 260607/264757 co-relation queries the response was YES. [2022-12-13 10:57:37,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85666 conditions, 12808 events. 8406/12808 cut-off events. For 260607/264757 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 85985 event pairs, 944 based on Foata normal form. 2806/15174 useless extension candidates. Maximal degree in co-relation 85619. Up to 5824 conditions per place. [2022-12-13 10:57:37,724 INFO L137 encePairwiseOnDemand]: 243/250 looper letters, 360 selfloop transitions, 10 changer transitions 1/400 dead transitions. [2022-12-13 10:57:37,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 400 transitions, 7407 flow [2022-12-13 10:57:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:57:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:57:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 634 transitions. [2022-12-13 10:57:37,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072 [2022-12-13 10:57:37,726 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 634 transitions. [2022-12-13 10:57:37,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 634 transitions. [2022-12-13 10:57:37,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:37,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 634 transitions. [2022-12-13 10:57:37,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.8) internal successors, (634), 5 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:37,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:37,728 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:37,728 INFO L175 Difference]: Start difference. First operand has 98 places, 205 transitions, 3283 flow. Second operand 5 states and 634 transitions. [2022-12-13 10:57:37,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 400 transitions, 7407 flow [2022-12-13 10:57:37,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 400 transitions, 7374 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-13 10:57:37,930 INFO L231 Difference]: Finished difference. Result has 103 places, 178 transitions, 2857 flow [2022-12-13 10:57:37,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2857, PETRI_PLACES=103, PETRI_TRANSITIONS=178} [2022-12-13 10:57:37,931 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2022-12-13 10:57:37,931 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 178 transitions, 2857 flow [2022-12-13 10:57:37,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:37,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:37,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:37,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 10:57:37,931 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1739030432, now seen corresponding path program 1 times [2022-12-13 10:57:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:37,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027721851] [2022-12-13 10:57:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:38,285 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 10:57:38,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:38,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027721851] [2022-12-13 10:57:38,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027721851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:38,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:38,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:38,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033585207] [2022-12-13 10:57:38,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:38,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:57:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:38,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:57:38,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:57:38,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 250 [2022-12-13 10:57:38,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 178 transitions, 2857 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:38,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:38,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 250 [2022-12-13 10:57:38,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:41,075 INFO L130 PetriNetUnfolder]: 13619/20471 cut-off events. [2022-12-13 10:57:41,075 INFO L131 PetriNetUnfolder]: For 274542/275972 co-relation queries the response was YES. [2022-12-13 10:57:41,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136697 conditions, 20471 events. 13619/20471 cut-off events. For 274542/275972 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 135270 event pairs, 2341 based on Foata normal form. 927/21309 useless extension candidates. Maximal degree in co-relation 136647. Up to 10759 conditions per place. [2022-12-13 10:57:41,187 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 149 selfloop transitions, 15 changer transitions 104/273 dead transitions. [2022-12-13 10:57:41,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 273 transitions, 4733 flow [2022-12-13 10:57:41,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2022-12-13 10:57:41,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.493 [2022-12-13 10:57:41,190 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 493 transitions. [2022-12-13 10:57:41,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 493 transitions. [2022-12-13 10:57:41,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:41,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 493 transitions. [2022-12-13 10:57:41,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:41,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:41,192 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:41,193 INFO L175 Difference]: Start difference. First operand has 103 places, 178 transitions, 2857 flow. Second operand 4 states and 493 transitions. [2022-12-13 10:57:41,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 273 transitions, 4733 flow [2022-12-13 10:57:41,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 273 transitions, 4705 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 10:57:41,775 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 2017 flow [2022-12-13 10:57:41,775 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=2842, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2017, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2022-12-13 10:57:41,775 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2022-12-13 10:57:41,776 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 2017 flow [2022-12-13 10:57:41,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:41,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:41,776 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:41,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 10:57:41,776 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1249208805, now seen corresponding path program 1 times [2022-12-13 10:57:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:41,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438885229] [2022-12-13 10:57:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:41,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:41,867 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 10:57:41,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:41,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438885229] [2022-12-13 10:57:41,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438885229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:41,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:41,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 10:57:41,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885574114] [2022-12-13 10:57:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:41,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 10:57:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 10:57:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 10:57:41,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2022-12-13 10:57:41,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 2017 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 10:57:41,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:41,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2022-12-13 10:57:41,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:42,827 INFO L130 PetriNetUnfolder]: 3741/6100 cut-off events. [2022-12-13 10:57:42,827 INFO L131 PetriNetUnfolder]: For 119680/121146 co-relation queries the response was YES. [2022-12-13 10:57:42,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40514 conditions, 6100 events. 3741/6100 cut-off events. For 119680/121146 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 40300 event pairs, 368 based on Foata normal form. 1158/7045 useless extension candidates. Maximal degree in co-relation 40463. Up to 2429 conditions per place. [2022-12-13 10:57:42,855 INFO L137 encePairwiseOnDemand]: 243/250 looper letters, 206 selfloop transitions, 14 changer transitions 18/258 dead transitions. [2022-12-13 10:57:42,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 258 transitions, 4562 flow [2022-12-13 10:57:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:57:42,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:57:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 759 transitions. [2022-12-13 10:57:42,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.506 [2022-12-13 10:57:42,857 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 759 transitions. [2022-12-13 10:57:42,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 759 transitions. [2022-12-13 10:57:42,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:42,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 759 transitions. [2022-12-13 10:57:42,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.5) internal successors, (759), 6 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:42,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:42,860 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:42,860 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 2017 flow. Second operand 6 states and 759 transitions. [2022-12-13 10:57:42,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 258 transitions, 4562 flow [2022-12-13 10:57:43,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 258 transitions, 4004 flow, removed 189 selfloop flow, removed 13 redundant places. [2022-12-13 10:57:43,039 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 1426 flow [2022-12-13 10:57:43,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1384, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1426, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2022-12-13 10:57:43,039 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2022-12-13 10:57:43,040 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 1426 flow [2022-12-13 10:57:43,040 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 10:57:43,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:43,040 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] [2022-12-13 10:57:43,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 10:57:43,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1092807905, now seen corresponding path program 1 times [2022-12-13 10:57:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:43,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795947463] [2022-12-13 10:57:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:43,151 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 10:57:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:43,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795947463] [2022-12-13 10:57:43,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795947463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:43,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:43,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:57:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298477126] [2022-12-13 10:57:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:43,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 10:57:43,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:43,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 10:57:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 10:57:43,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 250 [2022-12-13 10:57:43,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 1426 flow. Second operand has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:43,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:43,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 250 [2022-12-13 10:57:43,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:43,956 INFO L130 PetriNetUnfolder]: 3582/5905 cut-off events. [2022-12-13 10:57:43,956 INFO L131 PetriNetUnfolder]: For 71558/72559 co-relation queries the response was YES. [2022-12-13 10:57:43,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36798 conditions, 5905 events. 3582/5905 cut-off events. For 71558/72559 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 39282 event pairs, 372 based on Foata normal form. 533/6233 useless extension candidates. Maximal degree in co-relation 36751. Up to 2238 conditions per place. [2022-12-13 10:57:43,980 INFO L137 encePairwiseOnDemand]: 243/250 looper letters, 162 selfloop transitions, 18 changer transitions 22/221 dead transitions. [2022-12-13 10:57:43,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 221 transitions, 3458 flow [2022-12-13 10:57:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 10:57:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 10:57:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 862 transitions. [2022-12-13 10:57:43,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49257142857142855 [2022-12-13 10:57:43,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 862 transitions. [2022-12-13 10:57:43,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 862 transitions. [2022-12-13 10:57:43,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:43,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 862 transitions. [2022-12-13 10:57:43,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.14285714285714) internal successors, (862), 7 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:43,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:43,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 250.0) internal successors, (2000), 8 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:43,985 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 1426 flow. Second operand 7 states and 862 transitions. [2022-12-13 10:57:43,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 221 transitions, 3458 flow [2022-12-13 10:57:44,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 221 transitions, 3198 flow, removed 54 selfloop flow, removed 8 redundant places. [2022-12-13 10:57:44,125 INFO L231 Difference]: Finished difference. Result has 98 places, 97 transitions, 1166 flow [2022-12-13 10:57:44,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1166, PETRI_PLACES=98, PETRI_TRANSITIONS=97} [2022-12-13 10:57:44,126 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2022-12-13 10:57:44,126 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 97 transitions, 1166 flow [2022-12-13 10:57:44,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:44,126 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:44,126 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:44,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 10:57:44,126 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:44,127 INFO L85 PathProgramCache]: Analyzing trace with hash -935291682, now seen corresponding path program 1 times [2022-12-13 10:57:44,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:44,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637575042] [2022-12-13 10:57:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:44,215 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 10:57:44,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:44,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637575042] [2022-12-13 10:57:44,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637575042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:44,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:44,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:57:44,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313593436] [2022-12-13 10:57:44,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:44,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:57:44,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:44,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:57:44,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:57:44,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2022-12-13 10:57:44,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 97 transitions, 1166 flow. Second operand has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:44,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:44,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2022-12-13 10:57:44,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:44,667 INFO L130 PetriNetUnfolder]: 2100/3434 cut-off events. [2022-12-13 10:57:44,667 INFO L131 PetriNetUnfolder]: For 31569/31733 co-relation queries the response was YES. [2022-12-13 10:57:44,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21599 conditions, 3434 events. 2100/3434 cut-off events. For 31569/31733 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 19660 event pairs, 407 based on Foata normal form. 82/3490 useless extension candidates. Maximal degree in co-relation 21554. Up to 1486 conditions per place. [2022-12-13 10:57:44,680 INFO L137 encePairwiseOnDemand]: 247/250 looper letters, 92 selfloop transitions, 1 changer transitions 83/184 dead transitions. [2022-12-13 10:57:44,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 184 transitions, 2592 flow [2022-12-13 10:57:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:57:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:57:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions. [2022-12-13 10:57:44,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.509 [2022-12-13 10:57:44,682 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 509 transitions. [2022-12-13 10:57:44,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 509 transitions. [2022-12-13 10:57:44,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:44,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 509 transitions. [2022-12-13 10:57:44,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:44,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:44,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:44,683 INFO L175 Difference]: Start difference. First operand has 98 places, 97 transitions, 1166 flow. Second operand 4 states and 509 transitions. [2022-12-13 10:57:44,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 184 transitions, 2592 flow [2022-12-13 10:57:44,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 184 transitions, 2455 flow, removed 25 selfloop flow, removed 7 redundant places. [2022-12-13 10:57:44,733 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 860 flow [2022-12-13 10:57:44,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=860, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2022-12-13 10:57:44,733 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 55 predicate places. [2022-12-13 10:57:44,733 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 860 flow [2022-12-13 10:57:44,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:44,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:44,734 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:44,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 10:57:44,734 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:44,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:44,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1223572490, now seen corresponding path program 2 times [2022-12-13 10:57:44,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:44,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104536458] [2022-12-13 10:57:44,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:44,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:45,092 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 10:57:45,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:45,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104536458] [2022-12-13 10:57:45,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104536458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:45,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:45,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:57:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152067583] [2022-12-13 10:57:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:45,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:57:45,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:57:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:57:45,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 250 [2022-12-13 10:57:45,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:45,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:45,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 250 [2022-12-13 10:57:45,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:45,588 INFO L130 PetriNetUnfolder]: 1579/2593 cut-off events. [2022-12-13 10:57:45,589 INFO L131 PetriNetUnfolder]: For 19954/20009 co-relation queries the response was YES. [2022-12-13 10:57:45,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15308 conditions, 2593 events. 1579/2593 cut-off events. For 19954/20009 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13517 event pairs, 175 based on Foata normal form. 38/2620 useless extension candidates. Maximal degree in co-relation 15274. Up to 1529 conditions per place. [2022-12-13 10:57:45,597 INFO L137 encePairwiseOnDemand]: 240/250 looper letters, 55 selfloop transitions, 7 changer transitions 97/161 dead transitions. [2022-12-13 10:57:45,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 1991 flow [2022-12-13 10:57:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:57:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:57:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 715 transitions. [2022-12-13 10:57:45,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2022-12-13 10:57:45,599 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 715 transitions. [2022-12-13 10:57:45,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 715 transitions. [2022-12-13 10:57:45,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:45,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 715 transitions. [2022-12-13 10:57:45,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:45,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:45,601 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:45,601 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 860 flow. Second operand 6 states and 715 transitions. [2022-12-13 10:57:45,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 1991 flow [2022-12-13 10:57:45,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 161 transitions, 1838 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-12-13 10:57:45,637 INFO L231 Difference]: Finished difference. Result has 88 places, 52 transitions, 492 flow [2022-12-13 10:57:45,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=88, PETRI_TRANSITIONS=52} [2022-12-13 10:57:45,637 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2022-12-13 10:57:45,637 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 52 transitions, 492 flow [2022-12-13 10:57:45,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:45,638 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:45,638 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:45,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 10:57:45,638 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:45,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1222328852, now seen corresponding path program 3 times [2022-12-13 10:57:45,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:45,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394345090] [2022-12-13 10:57:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:45,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:57:46,266 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 10:57:46,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:57:46,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394345090] [2022-12-13 10:57:46,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394345090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:57:46,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:57:46,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 10:57:46,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852479909] [2022-12-13 10:57:46,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:57:46,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 10:57:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:57:46,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 10:57:46,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 10:57:46,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 250 [2022-12-13 10:57:46,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 52 transitions, 492 flow. Second operand has 8 states, 8 states have (on average 118.875) internal successors, (951), 8 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:57:46,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 250 [2022-12-13 10:57:46,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:57:46,613 INFO L130 PetriNetUnfolder]: 614/1037 cut-off events. [2022-12-13 10:57:46,613 INFO L131 PetriNetUnfolder]: For 6460/6461 co-relation queries the response was YES. [2022-12-13 10:57:46,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5461 conditions, 1037 events. 614/1037 cut-off events. For 6460/6461 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4558 event pairs, 128 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5431. Up to 610 conditions per place. [2022-12-13 10:57:46,618 INFO L137 encePairwiseOnDemand]: 244/250 looper letters, 51 selfloop transitions, 12 changer transitions 25/91 dead transitions. [2022-12-13 10:57:46,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 91 transitions, 899 flow [2022-12-13 10:57:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:57:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:57:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 743 transitions. [2022-12-13 10:57:46,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49533333333333335 [2022-12-13 10:57:46,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 743 transitions. [2022-12-13 10:57:46,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 743 transitions. [2022-12-13 10:57:46,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:57:46,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 743 transitions. [2022-12-13 10:57:46,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.83333333333333) internal successors, (743), 6 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,624 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 250.0) internal successors, (1750), 7 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,624 INFO L175 Difference]: Start difference. First operand has 88 places, 52 transitions, 492 flow. Second operand 6 states and 743 transitions. [2022-12-13 10:57:46,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 91 transitions, 899 flow [2022-12-13 10:57:46,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 670 flow, removed 67 selfloop flow, removed 22 redundant places. [2022-12-13 10:57:46,652 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 359 flow [2022-12-13 10:57:46,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2022-12-13 10:57:46,653 INFO L288 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2022-12-13 10:57:46,653 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 359 flow [2022-12-13 10:57:46,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.875) internal successors, (951), 8 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:57:46,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:57:46,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:46,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 10:57:46,654 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 10:57:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:57:46,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1150023334, now seen corresponding path program 4 times [2022-12-13 10:57:46,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:57:46,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438192482] [2022-12-13 10:57:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:57:46,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:57:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:57:46,675 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:57:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:57:46,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:57:46,733 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 10:57:46,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 10:57:46,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 10:57:46,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 10:57:46,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 10:57:46,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 10:57:46,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-13 10:57:46,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 10:57:46,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 10:57:46,737 INFO L445 BasicCegarLoop]: Path program histogram: [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 10:57:46,742 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 10:57:46,742 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 10:57:46,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:57:46 BasicIcfg [2022-12-13 10:57:46,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 10:57:46,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 10:57:46,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 10:57:46,822 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 10:57:46,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:54" (3/4) ... [2022-12-13 10:57:46,824 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 10:57:46,906 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 10:57:46,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 10:57:46,907 INFO L158 Benchmark]: Toolchain (without parser) took 53663.08ms. Allocated memory was 125.8MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 94.8MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-12-13 10:57:46,907 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory was 101.7MB in the beginning and 101.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:57:46,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.35ms. Allocated memory is still 125.8MB. Free memory was 94.3MB in the beginning and 67.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 10:57:46,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.01ms. Allocated memory is still 125.8MB. Free memory was 67.0MB in the beginning and 64.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 10:57:46,908 INFO L158 Benchmark]: Boogie Preprocessor took 27.00ms. Allocated memory is still 125.8MB. Free memory was 64.3MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:57:46,909 INFO L158 Benchmark]: RCFGBuilder took 508.81ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 62.2MB in the beginning and 102.6MB in the end (delta: -40.4MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2022-12-13 10:57:46,909 INFO L158 Benchmark]: TraceAbstraction took 52650.56ms. Allocated memory was 151.0MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 102.6MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-12-13 10:57:46,909 INFO L158 Benchmark]: Witness Printer took 84.24ms. Allocated memory is still 3.0GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 10:57:46,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory was 101.7MB in the beginning and 101.7MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.35ms. Allocated memory is still 125.8MB. Free memory was 94.3MB in the beginning and 67.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.01ms. Allocated memory is still 125.8MB. Free memory was 67.0MB in the beginning and 64.3MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.00ms. Allocated memory is still 125.8MB. Free memory was 64.3MB in the beginning and 62.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 508.81ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 62.2MB in the beginning and 102.6MB in the end (delta: -40.4MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. * TraceAbstraction took 52650.56ms. Allocated memory was 151.0MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 102.6MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 84.24ms. Allocated memory is still 3.0GB. Free memory was 1.7GB in the beginning and 1.7GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 141 PlacesBefore, 41 PlacesAfterwards, 130 TransitionsBefore, 28 TransitionsAfterwards, 3106 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 116 TotalNumberOfCompositions, 7913 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3355, independent: 3142, independent conditional: 0, independent unconditional: 3142, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1674, independent: 1635, independent conditional: 0, independent unconditional: 1635, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3355, independent: 1507, independent conditional: 0, independent unconditional: 1507, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 1674, unknown conditional: 0, unknown unconditional: 1674] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 122, Positive conditional cache size: 0, Positive unconditional cache size: 122, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int a = 0; [L717] 0 _Bool main$tmp_guard0; [L718] 0 _Bool main$tmp_guard1; [L720] 0 int x = 0; [L722] 0 int y = 0; [L723] 0 _Bool y$flush_delayed; [L724] 0 int y$mem_tmp; [L725] 0 _Bool y$r_buff0_thd0; [L726] 0 _Bool y$r_buff0_thd1; [L727] 0 _Bool y$r_buff0_thd2; [L728] 0 _Bool y$r_buff0_thd3; [L729] 0 _Bool y$r_buff0_thd4; [L730] 0 _Bool y$r_buff1_thd0; [L731] 0 _Bool y$r_buff1_thd1; [L732] 0 _Bool y$r_buff1_thd2; [L733] 0 _Bool y$r_buff1_thd3; [L734] 0 _Bool y$r_buff1_thd4; [L735] 0 _Bool y$read_delayed; [L736] 0 int *y$read_delayed_var; [L737] 0 int y$w_buff0; [L738] 0 _Bool y$w_buff0_used; [L739] 0 int y$w_buff1; [L740] 0 _Bool y$w_buff1_used; [L742] 0 int z = 0; [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L841] 0 pthread_t t1433; [L842] FCALL, FORK 0 pthread_create(&t1433, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1433, ((void *)0), P0, ((void *)0))=-3, t1433={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L843] 0 pthread_t t1434; [L844] FCALL, FORK 0 pthread_create(&t1434, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1434, ((void *)0), P1, ((void *)0))=-2, t1433={5:0}, t1434={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L845] 0 pthread_t t1435; [L846] FCALL, FORK 0 pthread_create(&t1435, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1435, ((void *)0), P2, ((void *)0))=-1, t1433={5:0}, t1434={6:0}, t1435={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L847] 0 pthread_t t1436; [L848] FCALL, FORK 0 pthread_create(&t1436, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1436, ((void *)0), P3, ((void *)0))=0, t1433={5:0}, t1434={6:0}, t1435={7:0}, t1436={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L783] 3 y$w_buff1 = y$w_buff0 [L784] 3 y$w_buff0 = 2 [L785] 3 y$w_buff1_used = y$w_buff0_used [L786] 3 y$w_buff0_used = (_Bool)1 [L787] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L787] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L788] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L789] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L790] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L791] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L792] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L793] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L796] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L813] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L816] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L748] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L756] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L758] 1 return 0; [L763] 2 x = 2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L766] 2 y = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L769] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L770] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L771] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L772] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L773] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L799] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L800] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L801] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L802] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L803] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L806] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L808] 3 return 0; [L819] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L820] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L821] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L822] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L823] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L776] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L778] 2 return 0; [L826] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L828] 4 return 0; [L850] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L852] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L852] RET 0 assume_abort_if_not(main$tmp_guard0) [L854] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L855] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L856] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L857] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L858] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1433={5:0}, t1434={6:0}, t1435={7:0}, t1436={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L861] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L862] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L863] 0 y$flush_delayed = weak$$choice2 [L864] 0 y$mem_tmp = y [L865] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L866] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L867] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L868] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L869] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L870] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L871] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L872] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 0) [L873] 0 y = y$flush_delayed ? y$mem_tmp : y [L874] 0 y$flush_delayed = (_Bool)0 [L876] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 848]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 844]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 846]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 842]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 169 locations, 7 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: 52.5s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 40.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1562 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1303 mSDsluCounter, 492 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 347 mSDsCounter, 419 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3170 IncrementalHoareTripleChecker+Invalid, 3589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 419 mSolverCounterUnsat, 145 mSDtfsCounter, 3170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3558occurred in iteration=17, InterpolantAutomatonStates: 124, 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, 0.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 5092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-13 10:57:46,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf4a9296-a30a-4153-b4c9-935523d8ca48/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE