./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/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_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/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_b22c43d8-c7da-4812-8163-1fc497899e51/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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- 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 21:34:56,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:34:56,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:34:56,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:34:56,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:34:56,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:34:56,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:34:56,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:34:56,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:34:56,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:34:56,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:34:56,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:34:56,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:34:56,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:34:56,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:34:56,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:34:56,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:34:56,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:34:56,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:34:56,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:34:56,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:34:56,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:34:56,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:34:56,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:34:56,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:34:56,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:34:56,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:34:56,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:34:56,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:34:56,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:34:56,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:34:56,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:34:56,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:34:56,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:34:56,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:34:56,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:34:56,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:34:56,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:34:56,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:34:56,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:34:56,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:34:56,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:34:56,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:34:56,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:34:56,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:34:56,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:34:56,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:34:56,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:34:56,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:34:56,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:34:56,980 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:34:56,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:34:56,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:34:56,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:34:56,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:34:56,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:34:56,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:34:56,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:34:56,983 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:34:56,983 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_b22c43d8-c7da-4812-8163-1fc497899e51/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2022-12-13 21:34:57,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:34:57,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:34:57,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:34:57,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:34:57,159 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:34:57,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-12-13 21:34:59,773 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:34:59,926 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:34:59,926 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-12-13 21:34:59,931 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/data/fca2c3cfa/aa534625f60b45ba93368d8e0a5ff975/FLAGb7e228a82 [2022-12-13 21:34:59,946 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/data/fca2c3cfa/aa534625f60b45ba93368d8e0a5ff975 [2022-12-13 21:34:59,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:34:59,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:34:59,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:34:59,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:34:59,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:34:59,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:59" (1/1) ... [2022-12-13 21:34:59,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522e88cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:59, skipping insertion in model container [2022-12-13 21:34:59,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:59" (1/1) ... [2022-12-13 21:34:59,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:34:59,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:35:00,107 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,109 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,114 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,115 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,116 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,117 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,119 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,144 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_b22c43d8-c7da-4812-8163-1fc497899e51/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-12-13 21:35:00,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:35:00,155 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:35:00,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,165 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,166 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,170 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:35:00,174 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:35:00,179 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_b22c43d8-c7da-4812-8163-1fc497899e51/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-12-13 21:35:00,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:35:00,190 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:35:00,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00 WrapperNode [2022-12-13 21:35:00,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:35:00,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:35:00,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:35:00,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:35:00,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,219 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2022-12-13 21:35:00,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:35:00,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:35:00,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:35:00,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:35:00,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:35:00,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:35:00,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:35:00,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:35:00,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (1/1) ... [2022-12-13 21:35:00,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:35:00,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:00,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:35:00,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b22c43d8-c7da-4812-8163-1fc497899e51/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:35:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:35:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:35:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:35:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:35:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:35:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 21:35:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 21:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 21:35:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 21:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:35:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:35:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:35:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:35:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:35:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:35:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:35:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:35:00,299 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 21:35:00,391 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:35:00,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:35:00,616 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:35:00,694 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:35:00,694 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:35:00,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:35:00 BoogieIcfgContainer [2022-12-13 21:35:00,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:35:00,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:35:00,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:35:00,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:35:00,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:34:59" (1/3) ... [2022-12-13 21:35:00,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574d1ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:35:00, skipping insertion in model container [2022-12-13 21:35:00,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:35:00" (2/3) ... [2022-12-13 21:35:00,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574d1ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:35:00, skipping insertion in model container [2022-12-13 21:35:00,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:35:00" (3/3) ... [2022-12-13 21:35:00,705 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-12-13 21:35:00,712 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:35:00,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:35:00,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:35:00,720 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:35:00,766 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 21:35:00,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 165 transitions, 370 flow [2022-12-13 21:35:00,846 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-12-13 21:35:00,846 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 21:35:00,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 160 events. 2/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-12-13 21:35:00,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 165 transitions, 370 flow [2022-12-13 21:35:00,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 145 transitions, 320 flow [2022-12-13 21:35:00,855 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:35:00,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 145 transitions, 320 flow [2022-12-13 21:35:00,865 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 145 transitions, 320 flow [2022-12-13 21:35:00,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 145 transitions, 320 flow [2022-12-13 21:35:00,897 INFO L130 PetriNetUnfolder]: 2/145 cut-off events. [2022-12-13 21:35:00,897 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 21:35:00,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 145 events. 2/145 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-12-13 21:35:00,898 INFO L119 LiptonReduction]: Number of co-enabled transitions 2082 [2022-12-13 21:35:06,029 INFO L134 LiptonReduction]: Checked pairs total: 10789 [2022-12-13 21:35:06,030 INFO L136 LiptonReduction]: Total number of compositions: 111 [2022-12-13 21:35:06,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:35:06,052 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;@7b245f18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:35:06,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 21:35:06,059 INFO L130 PetriNetUnfolder]: 0/41 cut-off events. [2022-12-13 21:35:06,059 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 21:35:06,059 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:06,060 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:06,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1340921393, now seen corresponding path program 1 times [2022-12-13 21:35:06,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:06,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201197412] [2022-12-13 21:35:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:06,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:07,123 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 21:35:07,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201197412] [2022-12-13 21:35:07,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201197412] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:07,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:07,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:35:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132477194] [2022-12-13 21:35:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:07,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:35:07,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:35:07,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:35:07,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 276 [2022-12-13 21:35:07,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:07,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:07,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 276 [2022-12-13 21:35:07,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:11,118 INFO L130 PetriNetUnfolder]: 53433/69727 cut-off events. [2022-12-13 21:35:11,119 INFO L131 PetriNetUnfolder]: For 4540/4540 co-relation queries the response was YES. [2022-12-13 21:35:11,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143512 conditions, 69727 events. 53433/69727 cut-off events. For 4540/4540 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 367295 event pairs, 17114 based on Foata normal form. 1/69728 useless extension candidates. Maximal degree in co-relation 118640. Up to 34631 conditions per place. [2022-12-13 21:35:11,350 INFO L137 encePairwiseOnDemand]: 268/276 looper letters, 101 selfloop transitions, 11 changer transitions 11/123 dead transitions. [2022-12-13 21:35:11,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 123 transitions, 567 flow [2022-12-13 21:35:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:35:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:35:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 759 transitions. [2022-12-13 21:35:11,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.55 [2022-12-13 21:35:11,363 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 759 transitions. [2022-12-13 21:35:11,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 759 transitions. [2022-12-13 21:35:11,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:11,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 759 transitions. [2022-12-13 21:35:11,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.8) internal successors, (759), 5 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 21:35:11,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,413 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,415 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 114 flow. Second operand 5 states and 759 transitions. [2022-12-13 21:35:11,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 123 transitions, 567 flow [2022-12-13 21:35:11,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 123 transitions, 517 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-13 21:35:11,687 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 170 flow [2022-12-13 21:35:11,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2022-12-13 21:35:11,692 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2022-12-13 21:35:11,692 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 170 flow [2022-12-13 21:35:11,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:11,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:11,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:35:11,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:11,693 INFO L85 PathProgramCache]: Analyzing trace with hash -357024865, now seen corresponding path program 2 times [2022-12-13 21:35:11,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:11,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605246286] [2022-12-13 21:35:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:11,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:11,883 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 21:35:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:11,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605246286] [2022-12-13 21:35:11,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605246286] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:11,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:11,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:35:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295829753] [2022-12-13 21:35:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:35:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:35:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:35:11,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:35:11,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:11,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:35:11,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:15,139 INFO L130 PetriNetUnfolder]: 40455/59063 cut-off events. [2022-12-13 21:35:15,139 INFO L131 PetriNetUnfolder]: For 6323/10047 co-relation queries the response was YES. [2022-12-13 21:35:15,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126616 conditions, 59063 events. 40455/59063 cut-off events. For 6323/10047 co-relation queries the response was YES. Maximal size of possible extension queue 2822. Compared 441052 event pairs, 12830 based on Foata normal form. 948/56776 useless extension candidates. Maximal degree in co-relation 79679. Up to 17475 conditions per place. [2022-12-13 21:35:15,403 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 100 selfloop transitions, 21 changer transitions 0/136 dead transitions. [2022-12-13 21:35:15,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 136 transitions, 604 flow [2022-12-13 21:35:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:35:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:35:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 777 transitions. [2022-12-13 21:35:15,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5630434782608695 [2022-12-13 21:35:15,406 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 777 transitions. [2022-12-13 21:35:15,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 777 transitions. [2022-12-13 21:35:15,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:15,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 777 transitions. [2022-12-13 21:35:15,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.4) internal successors, (777), 5 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:15,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:15,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:15,410 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 170 flow. Second operand 5 states and 777 transitions. [2022-12-13 21:35:15,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 136 transitions, 604 flow [2022-12-13 21:35:15,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 136 transitions, 589 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 21:35:15,414 INFO L231 Difference]: Finished difference. Result has 59 places, 71 transitions, 286 flow [2022-12-13 21:35:15,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=59, PETRI_TRANSITIONS=71} [2022-12-13 21:35:15,415 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2022-12-13 21:35:15,415 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 71 transitions, 286 flow [2022-12-13 21:35:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:15,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:15,416 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:35:15,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:15,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash 228216503, now seen corresponding path program 3 times [2022-12-13 21:35:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:15,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153734116] [2022-12-13 21:35:15,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:16,043 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 21:35:16,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153734116] [2022-12-13 21:35:16,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153734116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:16,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:16,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:35:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822041935] [2022-12-13 21:35:16,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:16,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:35:16,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:35:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:35:16,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 276 [2022-12-13 21:35:16,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 71 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:16,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:16,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 276 [2022-12-13 21:35:16,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:24,546 INFO L130 PetriNetUnfolder]: 110081/147700 cut-off events. [2022-12-13 21:35:24,546 INFO L131 PetriNetUnfolder]: For 121159/121159 co-relation queries the response was YES. [2022-12-13 21:35:24,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441956 conditions, 147700 events. 110081/147700 cut-off events. For 121159/121159 co-relation queries the response was YES. Maximal size of possible extension queue 4010. Compared 927940 event pairs, 23290 based on Foata normal form. 2/147702 useless extension candidates. Maximal degree in co-relation 136671. Up to 59182 conditions per place. [2022-12-13 21:35:25,140 INFO L137 encePairwiseOnDemand]: 262/276 looper letters, 231 selfloop transitions, 26 changer transitions 26/283 dead transitions. [2022-12-13 21:35:25,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 283 transitions, 1671 flow [2022-12-13 21:35:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:35:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:35:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1293 transitions. [2022-12-13 21:35:25,143 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5205314009661836 [2022-12-13 21:35:25,143 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1293 transitions. [2022-12-13 21:35:25,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1293 transitions. [2022-12-13 21:35:25,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:25,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1293 transitions. [2022-12-13 21:35:25,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.66666666666666) internal successors, (1293), 9 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:25,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:25,149 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:25,149 INFO L175 Difference]: Start difference. First operand has 59 places, 71 transitions, 286 flow. Second operand 9 states and 1293 transitions. [2022-12-13 21:35:25,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 283 transitions, 1671 flow [2022-12-13 21:35:25,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 283 transitions, 1671 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:35:25,170 INFO L231 Difference]: Finished difference. Result has 73 places, 86 transitions, 483 flow [2022-12-13 21:35:25,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=483, PETRI_PLACES=73, PETRI_TRANSITIONS=86} [2022-12-13 21:35:25,170 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2022-12-13 21:35:25,171 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 86 transitions, 483 flow [2022-12-13 21:35:25,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:25,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:25,171 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:25,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:35:25,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2046004561, now seen corresponding path program 4 times [2022-12-13 21:35:25,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:25,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749729972] [2022-12-13 21:35:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:25,363 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 21:35:25,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:25,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749729972] [2022-12-13 21:35:25,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749729972] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:25,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:25,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:35:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647034240] [2022-12-13 21:35:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:35:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:35:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:35:25,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 276 [2022-12-13 21:35:25,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 86 transitions, 483 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:25,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:25,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 276 [2022-12-13 21:35:25,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:29,969 INFO L130 PetriNetUnfolder]: 45466/66811 cut-off events. [2022-12-13 21:35:29,969 INFO L131 PetriNetUnfolder]: For 96945/113532 co-relation queries the response was YES. [2022-12-13 21:35:30,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219191 conditions, 66811 events. 45466/66811 cut-off events. For 96945/113532 co-relation queries the response was YES. Maximal size of possible extension queue 3057. Compared 499345 event pairs, 9897 based on Foata normal form. 1562/65426 useless extension candidates. Maximal degree in co-relation 158982. Up to 49329 conditions per place. [2022-12-13 21:35:30,380 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 140 selfloop transitions, 51 changer transitions 0/214 dead transitions. [2022-12-13 21:35:30,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 214 transitions, 1343 flow [2022-12-13 21:35:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:35:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:35:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1326 transitions. [2022-12-13 21:35:30,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.533816425120773 [2022-12-13 21:35:30,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1326 transitions. [2022-12-13 21:35:30,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1326 transitions. [2022-12-13 21:35:30,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:30,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1326 transitions. [2022-12-13 21:35:30,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.33333333333334) internal successors, (1326), 9 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:30,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:30,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:30,388 INFO L175 Difference]: Start difference. First operand has 73 places, 86 transitions, 483 flow. Second operand 9 states and 1326 transitions. [2022-12-13 21:35:30,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 214 transitions, 1343 flow [2022-12-13 21:35:30,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 214 transitions, 1268 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-12-13 21:35:30,680 INFO L231 Difference]: Finished difference. Result has 79 places, 131 transitions, 814 flow [2022-12-13 21:35:30,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=814, PETRI_PLACES=79, PETRI_TRANSITIONS=131} [2022-12-13 21:35:30,680 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2022-12-13 21:35:30,680 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 131 transitions, 814 flow [2022-12-13 21:35:30,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:30,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:30,681 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:30,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:35:30,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:30,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1719172447, now seen corresponding path program 5 times [2022-12-13 21:35:30,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:30,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628068874] [2022-12-13 21:35:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:30,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:30,816 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 21:35:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:30,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628068874] [2022-12-13 21:35:30,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628068874] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:30,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:30,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:35:30,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023940680] [2022-12-13 21:35:30,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:30,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:35:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:35:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:35:30,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:35:30,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 131 transitions, 814 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:30,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:30,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:35:30,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:36,475 INFO L130 PetriNetUnfolder]: 53112/80764 cut-off events. [2022-12-13 21:35:36,475 INFO L131 PetriNetUnfolder]: For 144679/158015 co-relation queries the response was YES. [2022-12-13 21:35:36,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277557 conditions, 80764 events. 53112/80764 cut-off events. For 144679/158015 co-relation queries the response was YES. Maximal size of possible extension queue 3689. Compared 663190 event pairs, 9233 based on Foata normal form. 2378/79891 useless extension candidates. Maximal degree in co-relation 83746. Up to 25117 conditions per place. [2022-12-13 21:35:36,923 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 126 selfloop transitions, 137 changer transitions 0/286 dead transitions. [2022-12-13 21:35:36,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 286 transitions, 2083 flow [2022-12-13 21:35:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:35:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:35:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 932 transitions. [2022-12-13 21:35:36,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2022-12-13 21:35:36,925 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 932 transitions. [2022-12-13 21:35:36,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 932 transitions. [2022-12-13 21:35:36,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:36,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 932 transitions. [2022-12-13 21:35:36,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:36,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:36,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:36,929 INFO L175 Difference]: Start difference. First operand has 79 places, 131 transitions, 814 flow. Second operand 6 states and 932 transitions. [2022-12-13 21:35:36,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 286 transitions, 2083 flow [2022-12-13 21:35:37,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 286 transitions, 2063 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 21:35:37,059 INFO L231 Difference]: Finished difference. Result has 86 places, 200 transitions, 1748 flow [2022-12-13 21:35:37,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1748, PETRI_PLACES=86, PETRI_TRANSITIONS=200} [2022-12-13 21:35:37,060 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2022-12-13 21:35:37,060 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 200 transitions, 1748 flow [2022-12-13 21:35:37,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:37,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:37,061 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:37,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:35:37,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:37,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:37,061 INFO L85 PathProgramCache]: Analyzing trace with hash 926444327, now seen corresponding path program 6 times [2022-12-13 21:35:37,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:37,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23216192] [2022-12-13 21:35:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:37,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:37,189 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 21:35:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:37,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23216192] [2022-12-13 21:35:37,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23216192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:37,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:37,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:35:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473114170] [2022-12-13 21:35:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:37,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:35:37,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:35:37,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:35:37,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:35:37,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 200 transitions, 1748 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:37,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:37,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:35:37,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:44,456 INFO L130 PetriNetUnfolder]: 56210/85994 cut-off events. [2022-12-13 21:35:44,456 INFO L131 PetriNetUnfolder]: For 316910/340035 co-relation queries the response was YES. [2022-12-13 21:35:44,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357809 conditions, 85994 events. 56210/85994 cut-off events. For 316910/340035 co-relation queries the response was YES. Maximal size of possible extension queue 3783. Compared 715835 event pairs, 7439 based on Foata normal form. 3400/85760 useless extension candidates. Maximal degree in co-relation 113057. Up to 27395 conditions per place. [2022-12-13 21:35:44,985 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 131 selfloop transitions, 260 changer transitions 3/417 dead transitions. [2022-12-13 21:35:44,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 417 transitions, 4075 flow [2022-12-13 21:35:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:35:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:35:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1081 transitions. [2022-12-13 21:35:44,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2022-12-13 21:35:44,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1081 transitions. [2022-12-13 21:35:44,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1081 transitions. [2022-12-13 21:35:44,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:44,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1081 transitions. [2022-12-13 21:35:44,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.42857142857142) internal successors, (1081), 7 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:44,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 276.0) internal successors, (2208), 8 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:44,992 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 276.0) internal successors, (2208), 8 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:44,992 INFO L175 Difference]: Start difference. First operand has 86 places, 200 transitions, 1748 flow. Second operand 7 states and 1081 transitions. [2022-12-13 21:35:44,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 417 transitions, 4075 flow [2022-12-13 21:35:45,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 417 transitions, 4035 flow, removed 20 selfloop flow, removed 0 redundant places. [2022-12-13 21:35:45,399 INFO L231 Difference]: Finished difference. Result has 94 places, 326 transitions, 3723 flow [2022-12-13 21:35:45,399 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3723, PETRI_PLACES=94, PETRI_TRANSITIONS=326} [2022-12-13 21:35:45,399 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 36 predicate places. [2022-12-13 21:35:45,399 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 326 transitions, 3723 flow [2022-12-13 21:35:45,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:45,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:45,400 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:45,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:35:45,400 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash 373807979, now seen corresponding path program 7 times [2022-12-13 21:35:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715293390] [2022-12-13 21:35:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:45,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:45,523 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 21:35:45,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:45,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715293390] [2022-12-13 21:35:45,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715293390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:45,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:45,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:35:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608219468] [2022-12-13 21:35:45,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:45,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:35:45,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:45,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:35:45,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:35:45,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:35:45,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 326 transitions, 3723 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:45,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:45,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:35:45,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:53,437 INFO L130 PetriNetUnfolder]: 51592/79903 cut-off events. [2022-12-13 21:35:53,437 INFO L131 PetriNetUnfolder]: For 435699/467911 co-relation queries the response was YES. [2022-12-13 21:35:53,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380138 conditions, 79903 events. 51592/79903 cut-off events. For 435699/467911 co-relation queries the response was YES. Maximal size of possible extension queue 3528. Compared 670716 event pairs, 8200 based on Foata normal form. 5974/83188 useless extension candidates. Maximal degree in co-relation 152555. Up to 24191 conditions per place. [2022-12-13 21:35:53,962 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 163 selfloop transitions, 274 changer transitions 3/463 dead transitions. [2022-12-13 21:35:53,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 463 transitions, 5626 flow [2022-12-13 21:35:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:35:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:35:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 932 transitions. [2022-12-13 21:35:53,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2022-12-13 21:35:53,966 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 932 transitions. [2022-12-13 21:35:53,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 932 transitions. [2022-12-13 21:35:53,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:53,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 932 transitions. [2022-12-13 21:35:53,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:53,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:53,970 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:53,970 INFO L175 Difference]: Start difference. First operand has 94 places, 326 transitions, 3723 flow. Second operand 6 states and 932 transitions. [2022-12-13 21:35:53,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 463 transitions, 5626 flow [2022-12-13 21:35:55,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 463 transitions, 5496 flow, removed 65 selfloop flow, removed 0 redundant places. [2022-12-13 21:35:55,008 INFO L231 Difference]: Finished difference. Result has 100 places, 372 transitions, 4872 flow [2022-12-13 21:35:55,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4872, PETRI_PLACES=100, PETRI_TRANSITIONS=372} [2022-12-13 21:35:55,009 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2022-12-13 21:35:55,009 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 372 transitions, 4872 flow [2022-12-13 21:35:55,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:55,009 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:55,009 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:35:55,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:35:55,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1497956531, now seen corresponding path program 8 times [2022-12-13 21:35:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:55,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432285796] [2022-12-13 21:35:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:55,119 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 21:35:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:55,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432285796] [2022-12-13 21:35:55,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432285796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:55,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:55,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:35:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082761630] [2022-12-13 21:35:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:55,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:35:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:35:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:35:55,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:35:55,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 372 transitions, 4872 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:55,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:55,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:35:55,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:03,468 INFO L130 PetriNetUnfolder]: 50717/79470 cut-off events. [2022-12-13 21:36:03,468 INFO L131 PetriNetUnfolder]: For 577984/604897 co-relation queries the response was YES. [2022-12-13 21:36:03,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403512 conditions, 79470 events. 50717/79470 cut-off events. For 577984/604897 co-relation queries the response was YES. Maximal size of possible extension queue 3662. Compared 677216 event pairs, 11497 based on Foata normal form. 4147/81013 useless extension candidates. Maximal degree in co-relation 186469. Up to 28294 conditions per place. [2022-12-13 21:36:04,003 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 209 selfloop transitions, 248 changer transitions 1/481 dead transitions. [2022-12-13 21:36:04,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 481 transitions, 6732 flow [2022-12-13 21:36:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:36:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:36:04,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 773 transitions. [2022-12-13 21:36:04,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5601449275362319 [2022-12-13 21:36:04,005 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 773 transitions. [2022-12-13 21:36:04,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 773 transitions. [2022-12-13 21:36:04,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:04,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 773 transitions. [2022-12-13 21:36:04,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.6) internal successors, (773), 5 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:04,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:04,009 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:04,009 INFO L175 Difference]: Start difference. First operand has 100 places, 372 transitions, 4872 flow. Second operand 5 states and 773 transitions. [2022-12-13 21:36:04,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 481 transitions, 6732 flow [2022-12-13 21:36:04,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 481 transitions, 6312 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 21:36:04,804 INFO L231 Difference]: Finished difference. Result has 102 places, 408 transitions, 5772 flow [2022-12-13 21:36:04,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=4233, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5772, PETRI_PLACES=102, PETRI_TRANSITIONS=408} [2022-12-13 21:36:04,805 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 44 predicate places. [2022-12-13 21:36:04,805 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 408 transitions, 5772 flow [2022-12-13 21:36:04,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:04,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:04,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:04,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:36:04,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:36:04,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash -818999093, now seen corresponding path program 9 times [2022-12-13 21:36:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:04,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135289602] [2022-12-13 21:36:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:04,939 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 21:36:04,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:04,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135289602] [2022-12-13 21:36:04,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135289602] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:04,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:04,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:36:04,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046556849] [2022-12-13 21:36:04,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:04,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:36:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:04,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:36:04,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:36:04,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:36:04,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 408 transitions, 5772 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:04,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:04,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:36:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:13,786 INFO L130 PetriNetUnfolder]: 53262/83124 cut-off events. [2022-12-13 21:36:13,786 INFO L131 PetriNetUnfolder]: For 677390/734733 co-relation queries the response was YES. [2022-12-13 21:36:14,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431569 conditions, 83124 events. 53262/83124 cut-off events. For 677390/734733 co-relation queries the response was YES. Maximal size of possible extension queue 3833. Compared 715052 event pairs, 6542 based on Foata normal form. 10152/90137 useless extension candidates. Maximal degree in co-relation 209001. Up to 25416 conditions per place. [2022-12-13 21:36:14,375 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 163 selfloop transitions, 437 changer transitions 2/625 dead transitions. [2022-12-13 21:36:14,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 625 transitions, 9112 flow [2022-12-13 21:36:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:36:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:36:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1385 transitions. [2022-12-13 21:36:14,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5575684380032206 [2022-12-13 21:36:14,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1385 transitions. [2022-12-13 21:36:14,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1385 transitions. [2022-12-13 21:36:14,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:14,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1385 transitions. [2022-12-13 21:36:14,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.88888888888889) internal successors, (1385), 9 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:14,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:14,384 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:14,384 INFO L175 Difference]: Start difference. First operand has 102 places, 408 transitions, 5772 flow. Second operand 9 states and 1385 transitions. [2022-12-13 21:36:14,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 625 transitions, 9112 flow [2022-12-13 21:36:15,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 625 transitions, 8678 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 21:36:15,514 INFO L231 Difference]: Finished difference. Result has 108 places, 501 transitions, 8014 flow [2022-12-13 21:36:15,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=5475, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8014, PETRI_PLACES=108, PETRI_TRANSITIONS=501} [2022-12-13 21:36:15,515 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 50 predicate places. [2022-12-13 21:36:15,515 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 501 transitions, 8014 flow [2022-12-13 21:36:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:15,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:15,516 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:15,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:36:15,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:36:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:15,516 INFO L85 PathProgramCache]: Analyzing trace with hash -702327043, now seen corresponding path program 10 times [2022-12-13 21:36:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:15,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626773212] [2022-12-13 21:36:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:15,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:15,766 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 21:36:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:15,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626773212] [2022-12-13 21:36:15,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626773212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:15,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:15,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 21:36:15,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116732605] [2022-12-13 21:36:15,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:15,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:36:15,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:15,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:36:15,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:36:15,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:36:15,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 501 transitions, 8014 flow. Second operand has 11 states, 11 states have (on average 132.27272727272728) internal successors, (1455), 11 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:15,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:15,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:36:15,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:26,429 INFO L130 PetriNetUnfolder]: 56061/87498 cut-off events. [2022-12-13 21:36:26,429 INFO L131 PetriNetUnfolder]: For 888752/949347 co-relation queries the response was YES. [2022-12-13 21:36:26,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475250 conditions, 87498 events. 56061/87498 cut-off events. For 888752/949347 co-relation queries the response was YES. Maximal size of possible extension queue 4088. Compared 746749 event pairs, 16763 based on Foata normal form. 6600/91091 useless extension candidates. Maximal degree in co-relation 217836. Up to 65642 conditions per place. [2022-12-13 21:36:27,048 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 457 selfloop transitions, 268 changer transitions 0/748 dead transitions. [2022-12-13 21:36:27,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 748 transitions, 11698 flow [2022-12-13 21:36:27,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 21:36:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-13 21:36:27,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2993 transitions. [2022-12-13 21:36:27,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5163906142167012 [2022-12-13 21:36:27,054 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2993 transitions. [2022-12-13 21:36:27,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2993 transitions. [2022-12-13 21:36:27,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:27,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2993 transitions. [2022-12-13 21:36:27,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 142.52380952380952) internal successors, (2993), 21 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:27,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 276.0) internal successors, (6072), 22 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:27,064 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 276.0) internal successors, (6072), 22 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:27,064 INFO L175 Difference]: Start difference. First operand has 108 places, 501 transitions, 8014 flow. Second operand 21 states and 2993 transitions. [2022-12-13 21:36:27,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 748 transitions, 11698 flow [2022-12-13 21:36:28,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 748 transitions, 11038 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:36:28,479 INFO L231 Difference]: Finished difference. Result has 130 places, 588 transitions, 9611 flow [2022-12-13 21:36:28,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=7439, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9611, PETRI_PLACES=130, PETRI_TRANSITIONS=588} [2022-12-13 21:36:28,480 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2022-12-13 21:36:28,480 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 588 transitions, 9611 flow [2022-12-13 21:36:28,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 132.27272727272728) internal successors, (1455), 11 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:28,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:28,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:28,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:36:28,481 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:36:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1400107125, now seen corresponding path program 11 times [2022-12-13 21:36:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:28,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922722430] [2022-12-13 21:36:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:28,602 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 21:36:28,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:28,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922722430] [2022-12-13 21:36:28,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922722430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:28,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:28,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:36:28,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755133872] [2022-12-13 21:36:28,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:28,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:36:28,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:36:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:36:28,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:36:28,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 588 transitions, 9611 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:28,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:28,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:36:28,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:39,030 INFO L130 PetriNetUnfolder]: 51056/81175 cut-off events. [2022-12-13 21:36:39,031 INFO L131 PetriNetUnfolder]: For 790961/821025 co-relation queries the response was YES. [2022-12-13 21:36:39,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428812 conditions, 81175 events. 51056/81175 cut-off events. For 790961/821025 co-relation queries the response was YES. Maximal size of possible extension queue 3958. Compared 711089 event pairs, 11740 based on Foata normal form. 4384/82837 useless extension candidates. Maximal degree in co-relation 369124. Up to 28638 conditions per place. [2022-12-13 21:36:39,707 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 234 selfloop transitions, 398 changer transitions 16/671 dead transitions. [2022-12-13 21:36:39,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 671 transitions, 11480 flow [2022-12-13 21:36:39,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:36:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:36:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 771 transitions. [2022-12-13 21:36:39,710 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.558695652173913 [2022-12-13 21:36:39,710 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 771 transitions. [2022-12-13 21:36:39,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 771 transitions. [2022-12-13 21:36:39,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:39,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 771 transitions. [2022-12-13 21:36:39,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 154.2) internal successors, (771), 5 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 21:36:39,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:39,713 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:39,713 INFO L175 Difference]: Start difference. First operand has 130 places, 588 transitions, 9611 flow. Second operand 5 states and 771 transitions. [2022-12-13 21:36:39,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 671 transitions, 11480 flow [2022-12-13 21:36:41,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 671 transitions, 11040 flow, removed 104 selfloop flow, removed 6 redundant places. [2022-12-13 21:36:41,239 INFO L231 Difference]: Finished difference. Result has 130 places, 580 transitions, 10281 flow [2022-12-13 21:36:41,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=8414, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=353, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10281, PETRI_PLACES=130, PETRI_TRANSITIONS=580} [2022-12-13 21:36:41,239 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2022-12-13 21:36:41,239 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 580 transitions, 10281 flow [2022-12-13 21:36:41,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:41,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:41,240 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:41,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:36:41,240 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:36:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash 833274739, now seen corresponding path program 12 times [2022-12-13 21:36:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:41,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622192334] [2022-12-13 21:36:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:41,343 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 21:36:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:41,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622192334] [2022-12-13 21:36:41,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622192334] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:41,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:41,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:36:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919635588] [2022-12-13 21:36:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:41,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:36:41,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:41,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:36:41,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:36:41,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:36:41,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 580 transitions, 10281 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:41,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:41,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:36:41,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:48,874 INFO L130 PetriNetUnfolder]: 34709/56618 cut-off events. [2022-12-13 21:36:48,874 INFO L131 PetriNetUnfolder]: For 626422/649560 co-relation queries the response was YES. [2022-12-13 21:36:49,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317217 conditions, 56618 events. 34709/56618 cut-off events. For 626422/649560 co-relation queries the response was YES. Maximal size of possible extension queue 2464. Compared 486234 event pairs, 7031 based on Foata normal form. 5080/59995 useless extension candidates. Maximal degree in co-relation 274044. Up to 22093 conditions per place. [2022-12-13 21:36:49,298 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 223 selfloop transitions, 403 changer transitions 0/640 dead transitions. [2022-12-13 21:36:49,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 640 transitions, 11923 flow [2022-12-13 21:36:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:36:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:36:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 767 transitions. [2022-12-13 21:36:49,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5557971014492754 [2022-12-13 21:36:49,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 767 transitions. [2022-12-13 21:36:49,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 767 transitions. [2022-12-13 21:36:49,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:49,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 767 transitions. [2022-12-13 21:36:49,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:49,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:49,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 276.0) internal successors, (1656), 6 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:49,303 INFO L175 Difference]: Start difference. First operand has 130 places, 580 transitions, 10281 flow. Second operand 5 states and 767 transitions. [2022-12-13 21:36:49,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 640 transitions, 11923 flow [2022-12-13 21:36:50,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 640 transitions, 11434 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-12-13 21:36:50,976 INFO L231 Difference]: Finished difference. Result has 116 places, 572 transitions, 10936 flow [2022-12-13 21:36:50,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=7939, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10936, PETRI_PLACES=116, PETRI_TRANSITIONS=572} [2022-12-13 21:36:50,977 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 58 predicate places. [2022-12-13 21:36:50,977 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 572 transitions, 10936 flow [2022-12-13 21:36:50,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:50,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:50,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:50,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:36:50,978 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:36:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:50,978 INFO L85 PathProgramCache]: Analyzing trace with hash 90946209, now seen corresponding path program 13 times [2022-12-13 21:36:50,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:50,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839009455] [2022-12-13 21:36:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:50,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:51,102 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 21:36:51,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:51,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839009455] [2022-12-13 21:36:51,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839009455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:51,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:51,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:36:51,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078607497] [2022-12-13 21:36:51,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:51,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:36:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:36:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:36:51,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:36:51,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 572 transitions, 10936 flow. Second operand has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:51,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:51,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:36:51,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:58,464 INFO L130 PetriNetUnfolder]: 34283/55883 cut-off events. [2022-12-13 21:36:58,464 INFO L131 PetriNetUnfolder]: For 612727/640027 co-relation queries the response was YES. [2022-12-13 21:36:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312741 conditions, 55883 events. 34283/55883 cut-off events. For 612727/640027 co-relation queries the response was YES. Maximal size of possible extension queue 2381. Compared 480506 event pairs, 4505 based on Foata normal form. 7263/61129 useless extension candidates. Maximal degree in co-relation 209768. Up to 16061 conditions per place. [2022-12-13 21:36:58,858 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 177 selfloop transitions, 522 changer transitions 1/714 dead transitions. [2022-12-13 21:36:58,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 714 transitions, 13865 flow [2022-12-13 21:36:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:36:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:36:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 932 transitions. [2022-12-13 21:36:58,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5628019323671497 [2022-12-13 21:36:58,860 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 932 transitions. [2022-12-13 21:36:58,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 932 transitions. [2022-12-13 21:36:58,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:58,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 932 transitions. [2022-12-13 21:36:58,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.33333333333334) internal successors, (932), 6 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:58,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:58,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 276.0) internal successors, (1932), 7 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:58,863 INFO L175 Difference]: Start difference. First operand has 116 places, 572 transitions, 10936 flow. Second operand 6 states and 932 transitions. [2022-12-13 21:36:58,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 714 transitions, 13865 flow [2022-12-13 21:36:59,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 714 transitions, 13408 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:36:59,578 INFO L231 Difference]: Finished difference. Result has 120 places, 619 transitions, 12709 flow [2022-12-13 21:36:59,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=10518, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12709, PETRI_PLACES=120, PETRI_TRANSITIONS=619} [2022-12-13 21:36:59,579 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 62 predicate places. [2022-12-13 21:36:59,579 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 619 transitions, 12709 flow [2022-12-13 21:36:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:59,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:59,579 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:59,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:36:59,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:36:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 950405043, now seen corresponding path program 14 times [2022-12-13 21:36:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:59,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515986988] [2022-12-13 21:36:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:59,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:59,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:59,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515986988] [2022-12-13 21:36:59,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515986988] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:59,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:59,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:36:59,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673658035] [2022-12-13 21:36:59,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:59,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:36:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:36:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:36:59,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:36:59,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 619 transitions, 12709 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:59,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:59,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:36:59,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:08,049 INFO L130 PetriNetUnfolder]: 35138/58351 cut-off events. [2022-12-13 21:37:08,049 INFO L131 PetriNetUnfolder]: For 760756/789571 co-relation queries the response was YES. [2022-12-13 21:37:08,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337629 conditions, 58351 events. 35138/58351 cut-off events. For 760756/789571 co-relation queries the response was YES. Maximal size of possible extension queue 2595. Compared 519239 event pairs, 4573 based on Foata normal form. 8305/64551 useless extension candidates. Maximal degree in co-relation 252987. Up to 14899 conditions per place. [2022-12-13 21:37:08,584 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 202 selfloop transitions, 579 changer transitions 6/801 dead transitions. [2022-12-13 21:37:08,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 801 transitions, 16207 flow [2022-12-13 21:37:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:37:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:37:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1237 transitions. [2022-12-13 21:37:08,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5602355072463768 [2022-12-13 21:37:08,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1237 transitions. [2022-12-13 21:37:08,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1237 transitions. [2022-12-13 21:37:08,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:08,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1237 transitions. [2022-12-13 21:37:08,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.625) internal successors, (1237), 8 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:08,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:08,590 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:08,590 INFO L175 Difference]: Start difference. First operand has 120 places, 619 transitions, 12709 flow. Second operand 8 states and 1237 transitions. [2022-12-13 21:37:08,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 801 transitions, 16207 flow [2022-12-13 21:37:09,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 801 transitions, 15263 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-12-13 21:37:09,452 INFO L231 Difference]: Finished difference. Result has 124 places, 676 transitions, 14404 flow [2022-12-13 21:37:09,453 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=11878, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14404, PETRI_PLACES=124, PETRI_TRANSITIONS=676} [2022-12-13 21:37:09,453 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 66 predicate places. [2022-12-13 21:37:09,453 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 676 transitions, 14404 flow [2022-12-13 21:37:09,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:09,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:09,454 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:09,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:37:09,454 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:37:09,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1983800971, now seen corresponding path program 15 times [2022-12-13 21:37:09,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:09,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995389467] [2022-12-13 21:37:09,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:09,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:09,622 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 21:37:09,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:09,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995389467] [2022-12-13 21:37:09,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995389467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:09,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:09,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:37:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957838299] [2022-12-13 21:37:09,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:09,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:37:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:09,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:37:09,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:37:09,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:37:09,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 676 transitions, 14404 flow. Second operand has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:09,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:09,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:37:09,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:18,488 INFO L130 PetriNetUnfolder]: 35867/59927 cut-off events. [2022-12-13 21:37:18,489 INFO L131 PetriNetUnfolder]: For 915308/936520 co-relation queries the response was YES. [2022-12-13 21:37:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350583 conditions, 59927 events. 35867/59927 cut-off events. For 915308/936520 co-relation queries the response was YES. Maximal size of possible extension queue 2804. Compared 538167 event pairs, 11387 based on Foata normal form. 1850/59789 useless extension candidates. Maximal degree in co-relation 273805. Up to 46198 conditions per place. [2022-12-13 21:37:18,906 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 598 selfloop transitions, 224 changer transitions 2/838 dead transitions. [2022-12-13 21:37:18,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 838 transitions, 18180 flow [2022-12-13 21:37:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:37:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 21:37:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1982 transitions. [2022-12-13 21:37:18,909 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5129399585921325 [2022-12-13 21:37:18,909 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1982 transitions. [2022-12-13 21:37:18,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1982 transitions. [2022-12-13 21:37:18,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:18,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1982 transitions. [2022-12-13 21:37:18,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 141.57142857142858) internal successors, (1982), 14 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:18,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 276.0) internal successors, (4140), 15 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:18,914 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 276.0) internal successors, (4140), 15 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:18,914 INFO L175 Difference]: Start difference. First operand has 124 places, 676 transitions, 14404 flow. Second operand 14 states and 1982 transitions. [2022-12-13 21:37:18,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 838 transitions, 18180 flow [2022-12-13 21:37:20,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 838 transitions, 17362 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 21:37:20,097 INFO L231 Difference]: Finished difference. Result has 134 places, 731 transitions, 15376 flow [2022-12-13 21:37:20,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=13679, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15376, PETRI_PLACES=134, PETRI_TRANSITIONS=731} [2022-12-13 21:37:20,097 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 76 predicate places. [2022-12-13 21:37:20,098 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 731 transitions, 15376 flow [2022-12-13 21:37:20,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:20,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:20,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:20,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:37:20,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:37:20,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 971682267, now seen corresponding path program 16 times [2022-12-13 21:37:20,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:20,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440996178] [2022-12-13 21:37:20,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:20,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:20,215 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 21:37:20,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:20,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440996178] [2022-12-13 21:37:20,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440996178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:20,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:20,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:37:20,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275872630] [2022-12-13 21:37:20,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:20,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:37:20,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:20,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:37:20,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:37:20,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:37:20,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 731 transitions, 15376 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:20,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:20,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:37:20,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:29,847 INFO L130 PetriNetUnfolder]: 36025/60489 cut-off events. [2022-12-13 21:37:29,848 INFO L131 PetriNetUnfolder]: For 840223/870043 co-relation queries the response was YES. [2022-12-13 21:37:30,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342058 conditions, 60489 events. 36025/60489 cut-off events. For 840223/870043 co-relation queries the response was YES. Maximal size of possible extension queue 2788. Compared 550164 event pairs, 3866 based on Foata normal form. 8124/66197 useless extension candidates. Maximal degree in co-relation 271240. Up to 17870 conditions per place. [2022-12-13 21:37:30,290 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 167 selfloop transitions, 747 changer transitions 6/934 dead transitions. [2022-12-13 21:37:30,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 934 transitions, 19820 flow [2022-12-13 21:37:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:37:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:37:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1379 transitions. [2022-12-13 21:37:30,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5551529790660226 [2022-12-13 21:37:30,292 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1379 transitions. [2022-12-13 21:37:30,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1379 transitions. [2022-12-13 21:37:30,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:30,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1379 transitions. [2022-12-13 21:37:30,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.22222222222223) internal successors, (1379), 9 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:30,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:30,296 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:30,296 INFO L175 Difference]: Start difference. First operand has 134 places, 731 transitions, 15376 flow. Second operand 9 states and 1379 transitions. [2022-12-13 21:37:30,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 934 transitions, 19820 flow [2022-12-13 21:37:32,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 934 transitions, 19739 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-12-13 21:37:32,193 INFO L231 Difference]: Finished difference. Result has 141 places, 812 transitions, 18831 flow [2022-12-13 21:37:32,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=15295, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=662, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18831, PETRI_PLACES=141, PETRI_TRANSITIONS=812} [2022-12-13 21:37:32,194 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 83 predicate places. [2022-12-13 21:37:32,194 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 812 transitions, 18831 flow [2022-12-13 21:37:32,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:32,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:32,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:32,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:37:32,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:37:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1524273643, now seen corresponding path program 17 times [2022-12-13 21:37:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:32,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881593748] [2022-12-13 21:37:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:32,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:32,375 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 21:37:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881593748] [2022-12-13 21:37:32,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881593748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:32,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:32,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:37:32,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555031204] [2022-12-13 21:37:32,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:32,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:37:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:37:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:37:32,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:37:32,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 812 transitions, 18831 flow. Second operand has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:32,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:32,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:37:32,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:44,211 INFO L130 PetriNetUnfolder]: 40741/68756 cut-off events. [2022-12-13 21:37:44,211 INFO L131 PetriNetUnfolder]: For 1180044/1211046 co-relation queries the response was YES. [2022-12-13 21:37:44,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422827 conditions, 68756 events. 40741/68756 cut-off events. For 1180044/1211046 co-relation queries the response was YES. Maximal size of possible extension queue 3331. Compared 640739 event pairs, 9647 based on Foata normal form. 4772/71004 useless extension candidates. Maximal degree in co-relation 334400. Up to 31759 conditions per place. [2022-12-13 21:37:44,935 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 674 selfloop transitions, 495 changer transitions 2/1185 dead transitions. [2022-12-13 21:37:44,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 1185 transitions, 25915 flow [2022-12-13 21:37:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 21:37:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 21:37:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3711 transitions. [2022-12-13 21:37:44,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5171404682274248 [2022-12-13 21:37:44,940 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3711 transitions. [2022-12-13 21:37:44,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3711 transitions. [2022-12-13 21:37:44,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:44,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3711 transitions. [2022-12-13 21:37:44,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 142.73076923076923) internal successors, (3711), 26 states have internal predecessors, (3711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:44,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 276.0) internal successors, (7452), 27 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:44,951 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 276.0) internal successors, (7452), 27 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:44,951 INFO L175 Difference]: Start difference. First operand has 141 places, 812 transitions, 18831 flow. Second operand 26 states and 3711 transitions. [2022-12-13 21:37:44,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 1185 transitions, 25915 flow [2022-12-13 21:37:47,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1185 transitions, 25574 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:37:47,448 INFO L231 Difference]: Finished difference. Result has 168 places, 974 transitions, 23668 flow [2022-12-13 21:37:47,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=18561, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=364, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=23668, PETRI_PLACES=168, PETRI_TRANSITIONS=974} [2022-12-13 21:37:47,449 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 110 predicate places. [2022-12-13 21:37:47,449 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 974 transitions, 23668 flow [2022-12-13 21:37:47,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:47,449 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:47,449 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:47,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:37:47,450 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:37:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2106536657, now seen corresponding path program 18 times [2022-12-13 21:37:47,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:47,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136188592] [2022-12-13 21:37:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:47,591 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 21:37:47,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:47,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136188592] [2022-12-13 21:37:47,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136188592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:47,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:47,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:37:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478228350] [2022-12-13 21:37:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:47,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:37:47,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:37:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:37:47,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:37:47,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 974 transitions, 23668 flow. Second operand has 8 states, 8 states have (on average 133.5) internal successors, (1068), 8 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:47,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:47,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:37:47,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:03,549 INFO L130 PetriNetUnfolder]: 42602/73225 cut-off events. [2022-12-13 21:38:03,549 INFO L131 PetriNetUnfolder]: For 1469832/1507834 co-relation queries the response was YES. [2022-12-13 21:38:03,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478854 conditions, 73225 events. 42602/73225 cut-off events. For 1469832/1507834 co-relation queries the response was YES. Maximal size of possible extension queue 3602. Compared 703714 event pairs, 7769 based on Foata normal form. 8258/79093 useless extension candidates. Maximal degree in co-relation 378299. Up to 31059 conditions per place. [2022-12-13 21:38:04,118 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 587 selfloop transitions, 729 changer transitions 11/1341 dead transitions. [2022-12-13 21:38:04,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1341 transitions, 32904 flow [2022-12-13 21:38:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:38:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 21:38:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1754 transitions. [2022-12-13 21:38:04,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5295893719806763 [2022-12-13 21:38:04,121 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1754 transitions. [2022-12-13 21:38:04,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1754 transitions. [2022-12-13 21:38:04,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:04,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1754 transitions. [2022-12-13 21:38:04,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.16666666666666) internal successors, (1754), 12 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:04,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:04,199 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:04,199 INFO L175 Difference]: Start difference. First operand has 168 places, 974 transitions, 23668 flow. Second operand 12 states and 1754 transitions. [2022-12-13 21:38:04,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1341 transitions, 32904 flow [2022-12-13 21:38:12,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 1341 transitions, 32272 flow, removed 181 selfloop flow, removed 8 redundant places. [2022-12-13 21:38:12,555 INFO L231 Difference]: Finished difference. Result has 176 places, 1170 transitions, 31015 flow [2022-12-13 21:38:12,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=23153, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=31015, PETRI_PLACES=176, PETRI_TRANSITIONS=1170} [2022-12-13 21:38:12,556 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 118 predicate places. [2022-12-13 21:38:12,556 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 1170 transitions, 31015 flow [2022-12-13 21:38:12,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 133.5) internal successors, (1068), 8 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:12,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:12,556 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:12,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:38:12,556 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:38:12,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2124845151, now seen corresponding path program 19 times [2022-12-13 21:38:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:12,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367068036] [2022-12-13 21:38:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:12,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:12,671 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 21:38:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:38:12,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367068036] [2022-12-13 21:38:12,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367068036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:38:12,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:38:12,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:38:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918893433] [2022-12-13 21:38:12,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:12,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:38:12,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:38:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:38:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:38:12,684 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:38:12,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 1170 transitions, 31015 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:12,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:12,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:38:12,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:29,303 INFO L130 PetriNetUnfolder]: 40164/70244 cut-off events. [2022-12-13 21:38:29,303 INFO L131 PetriNetUnfolder]: For 1570588/1612977 co-relation queries the response was YES. [2022-12-13 21:38:29,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489009 conditions, 70244 events. 40164/70244 cut-off events. For 1570588/1612977 co-relation queries the response was YES. Maximal size of possible extension queue 3398. Compared 688047 event pairs, 5120 based on Foata normal form. 10638/78670 useless extension candidates. Maximal degree in co-relation 422391. Up to 18868 conditions per place. [2022-12-13 21:38:29,851 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 239 selfloop transitions, 1169 changer transitions 25/1447 dead transitions. [2022-12-13 21:38:29,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1447 transitions, 38991 flow [2022-12-13 21:38:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:38:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:38:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1229 transitions. [2022-12-13 21:38:29,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5566123188405797 [2022-12-13 21:38:29,853 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1229 transitions. [2022-12-13 21:38:29,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1229 transitions. [2022-12-13 21:38:29,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:29,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1229 transitions. [2022-12-13 21:38:29,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.625) internal successors, (1229), 8 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:29,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:29,856 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:29,856 INFO L175 Difference]: Start difference. First operand has 176 places, 1170 transitions, 31015 flow. Second operand 8 states and 1229 transitions. [2022-12-13 21:38:29,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1447 transitions, 38991 flow [2022-12-13 21:38:39,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 1447 transitions, 38972 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 21:38:39,334 INFO L231 Difference]: Finished difference. Result has 183 places, 1290 transitions, 37133 flow [2022-12-13 21:38:39,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=30937, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=37133, PETRI_PLACES=183, PETRI_TRANSITIONS=1290} [2022-12-13 21:38:39,335 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 125 predicate places. [2022-12-13 21:38:39,335 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 1290 transitions, 37133 flow [2022-12-13 21:38:39,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:39,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:39,336 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:39,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:38:39,336 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:38:39,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash 580996337, now seen corresponding path program 20 times [2022-12-13 21:38:39,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:39,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428611039] [2022-12-13 21:38:39,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:39,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:38:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:38:39,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428611039] [2022-12-13 21:38:39,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428611039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:38:39,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:38:39,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:38:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866345032] [2022-12-13 21:38:39,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:38:39,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:38:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:38:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:38:39,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:38:39,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 1290 transitions, 37133 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:39,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:39,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:38:39,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:52,956 INFO L130 PetriNetUnfolder]: 25724/46713 cut-off events. [2022-12-13 21:38:52,957 INFO L131 PetriNetUnfolder]: For 1033489/1054298 co-relation queries the response was YES. [2022-12-13 21:38:53,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350232 conditions, 46713 events. 25724/46713 cut-off events. For 1033489/1054298 co-relation queries the response was YES. Maximal size of possible extension queue 2245. Compared 449089 event pairs, 2865 based on Foata normal form. 8247/53909 useless extension candidates. Maximal degree in co-relation 292892. Up to 10759 conditions per place. [2022-12-13 21:38:53,348 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 229 selfloop transitions, 1312 changer transitions 76/1631 dead transitions. [2022-12-13 21:38:53,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 1631 transitions, 48119 flow [2022-12-13 21:38:53,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:38:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:38:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1224 transitions. [2022-12-13 21:38:53,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2022-12-13 21:38:53,350 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1224 transitions. [2022-12-13 21:38:53,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1224 transitions. [2022-12-13 21:38:53,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:53,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1224 transitions. [2022-12-13 21:38:53,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:53,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:53,355 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:53,355 INFO L175 Difference]: Start difference. First operand has 183 places, 1290 transitions, 37133 flow. Second operand 8 states and 1224 transitions. [2022-12-13 21:38:53,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 1631 transitions, 48119 flow [2022-12-13 21:38:59,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 1631 transitions, 47782 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:38:59,680 INFO L231 Difference]: Finished difference. Result has 191 places, 1433 transitions, 45005 flow [2022-12-13 21:38:59,681 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=35444, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45005, PETRI_PLACES=191, PETRI_TRANSITIONS=1433} [2022-12-13 21:38:59,681 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 133 predicate places. [2022-12-13 21:38:59,681 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 1433 transitions, 45005 flow [2022-12-13 21:38:59,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:59,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:59,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:59,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 21:38:59,682 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:38:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1482559451, now seen corresponding path program 21 times [2022-12-13 21:38:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:59,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780149124] [2022-12-13 21:38:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:59,869 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 21:38:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:38:59,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780149124] [2022-12-13 21:38:59,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780149124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:38:59,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:38:59,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:38:59,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212608450] [2022-12-13 21:38:59,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:59,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:38:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:38:59,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:38:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:38:59,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:38:59,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 1433 transitions, 45005 flow. Second operand has 10 states, 10 states have (on average 132.6) internal successors, (1326), 10 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:59,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:59,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:38:59,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:16,913 INFO L130 PetriNetUnfolder]: 26445/48298 cut-off events. [2022-12-13 21:39:16,913 INFO L131 PetriNetUnfolder]: For 1215350/1238282 co-relation queries the response was YES. [2022-12-13 21:39:17,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379777 conditions, 48298 events. 26445/48298 cut-off events. For 1215350/1238282 co-relation queries the response was YES. Maximal size of possible extension queue 2321. Compared 466750 event pairs, 3892 based on Foata normal form. 5804/53158 useless extension candidates. Maximal degree in co-relation 316152. Up to 13481 conditions per place. [2022-12-13 21:39:17,306 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 558 selfloop transitions, 1108 changer transitions 2/1682 dead transitions. [2022-12-13 21:39:17,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1682 transitions, 51941 flow [2022-12-13 21:39:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:39:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 21:39:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2466 transitions. [2022-12-13 21:39:17,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5255754475703325 [2022-12-13 21:39:17,309 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2466 transitions. [2022-12-13 21:39:17,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2466 transitions. [2022-12-13 21:39:17,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:17,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2466 transitions. [2022-12-13 21:39:17,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 145.05882352941177) internal successors, (2466), 17 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:17,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:17,315 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:17,315 INFO L175 Difference]: Start difference. First operand has 191 places, 1433 transitions, 45005 flow. Second operand 17 states and 2466 transitions. [2022-12-13 21:39:17,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1682 transitions, 51941 flow [2022-12-13 21:39:25,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1682 transitions, 51315 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 21:39:25,647 INFO L231 Difference]: Finished difference. Result has 209 places, 1530 transitions, 51096 flow [2022-12-13 21:39:25,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=44418, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1020, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=51096, PETRI_PLACES=209, PETRI_TRANSITIONS=1530} [2022-12-13 21:39:25,648 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 151 predicate places. [2022-12-13 21:39:25,648 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 1530 transitions, 51096 flow [2022-12-13 21:39:25,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.6) internal successors, (1326), 10 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:25,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:25,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:25,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 21:39:25,648 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:39:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:25,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1528131647, now seen corresponding path program 22 times [2022-12-13 21:39:25,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:25,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489568369] [2022-12-13 21:39:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:25,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:25,769 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 21:39:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:25,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489568369] [2022-12-13 21:39:25,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489568369] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:25,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:25,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:39:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203468937] [2022-12-13 21:39:25,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:25,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:39:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:39:25,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:39:25,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:39:25,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 1530 transitions, 51096 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:25,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:25,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:39:25,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:43,688 INFO L130 PetriNetUnfolder]: 26303/47996 cut-off events. [2022-12-13 21:39:43,688 INFO L131 PetriNetUnfolder]: For 1412878/1438446 co-relation queries the response was YES. [2022-12-13 21:39:43,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400092 conditions, 47996 events. 26303/47996 cut-off events. For 1412878/1438446 co-relation queries the response was YES. Maximal size of possible extension queue 2318. Compared 465791 event pairs, 2428 based on Foata normal form. 6092/53013 useless extension candidates. Maximal degree in co-relation 336178. Up to 13875 conditions per place. [2022-12-13 21:39:44,117 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 169 selfloop transitions, 1489 changer transitions 3/1675 dead transitions. [2022-12-13 21:39:44,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1675 transitions, 56084 flow [2022-12-13 21:39:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:39:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:39:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1225 transitions. [2022-12-13 21:39:44,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5548007246376812 [2022-12-13 21:39:44,119 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1225 transitions. [2022-12-13 21:39:44,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1225 transitions. [2022-12-13 21:39:44,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:44,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1225 transitions. [2022-12-13 21:39:44,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.125) internal successors, (1225), 8 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:44,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:44,122 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:44,122 INFO L175 Difference]: Start difference. First operand has 209 places, 1530 transitions, 51096 flow. Second operand 8 states and 1225 transitions. [2022-12-13 21:39:44,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1675 transitions, 56084 flow [2022-12-13 21:39:58,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 1675 transitions, 55938 flow, removed 55 selfloop flow, removed 4 redundant places. [2022-12-13 21:39:58,219 INFO L231 Difference]: Finished difference. Result has 214 places, 1568 transitions, 55181 flow [2022-12-13 21:39:58,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=50890, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=55181, PETRI_PLACES=214, PETRI_TRANSITIONS=1568} [2022-12-13 21:39:58,220 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 156 predicate places. [2022-12-13 21:39:58,220 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 1568 transitions, 55181 flow [2022-12-13 21:39:58,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:58,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:58,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:58,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 21:39:58,220 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:39:58,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash -685690529, now seen corresponding path program 23 times [2022-12-13 21:39:58,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:58,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056239917] [2022-12-13 21:39:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:58,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:58,357 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 21:39:58,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:58,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056239917] [2022-12-13 21:39:58,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056239917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:58,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:58,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:39:58,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028266356] [2022-12-13 21:39:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:58,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:39:58,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:39:58,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:39:58,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:39:58,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 1568 transitions, 55181 flow. Second operand has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:58,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:58,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:39:58,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:40:16,701 INFO L130 PetriNetUnfolder]: 25536/47293 cut-off events. [2022-12-13 21:40:16,702 INFO L131 PetriNetUnfolder]: For 1566011/1589796 co-relation queries the response was YES. [2022-12-13 21:40:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417950 conditions, 47293 events. 25536/47293 cut-off events. For 1566011/1589796 co-relation queries the response was YES. Maximal size of possible extension queue 2397. Compared 466122 event pairs, 2360 based on Foata normal form. 6984/53272 useless extension candidates. Maximal degree in co-relation 346944. Up to 11427 conditions per place. [2022-12-13 21:40:17,130 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 238 selfloop transitions, 1524 changer transitions 63/1839 dead transitions. [2022-12-13 21:40:17,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 1839 transitions, 62950 flow [2022-12-13 21:40:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:40:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 21:40:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1824 transitions. [2022-12-13 21:40:17,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2022-12-13 21:40:17,133 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1824 transitions. [2022-12-13 21:40:17,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1824 transitions. [2022-12-13 21:40:17,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:40:17,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1824 transitions. [2022-12-13 21:40:17,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:17,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:17,137 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:17,137 INFO L175 Difference]: Start difference. First operand has 214 places, 1568 transitions, 55181 flow. Second operand 12 states and 1824 transitions. [2022-12-13 21:40:17,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 1839 transitions, 62950 flow [2022-12-13 21:40:32,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 1839 transitions, 61527 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-12-13 21:40:32,789 INFO L231 Difference]: Finished difference. Result has 224 places, 1603 transitions, 57847 flow [2022-12-13 21:40:32,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=53635, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=57847, PETRI_PLACES=224, PETRI_TRANSITIONS=1603} [2022-12-13 21:40:32,790 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 166 predicate places. [2022-12-13 21:40:32,790 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 1603 transitions, 57847 flow [2022-12-13 21:40:32,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:32,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:40:32,790 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:32,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 21:40:32,790 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:40:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1481228917, now seen corresponding path program 24 times [2022-12-13 21:40:32,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:40:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259006081] [2022-12-13 21:40:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:40:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:32,947 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 21:40:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:40:32,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259006081] [2022-12-13 21:40:32,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259006081] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:32,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:32,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:40:32,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884274573] [2022-12-13 21:40:32,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:32,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:40:32,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:40:32,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:40:32,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:40:32,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:40:32,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 1603 transitions, 57847 flow. Second operand has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:32,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:40:32,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:40:32,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:40:51,516 INFO L130 PetriNetUnfolder]: 25649/47884 cut-off events. [2022-12-13 21:40:51,516 INFO L131 PetriNetUnfolder]: For 1732890/1753314 co-relation queries the response was YES. [2022-12-13 21:40:51,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438500 conditions, 47884 events. 25649/47884 cut-off events. For 1732890/1753314 co-relation queries the response was YES. Maximal size of possible extension queue 2561. Compared 476984 event pairs, 3587 based on Foata normal form. 5372/52254 useless extension candidates. Maximal degree in co-relation 358238. Up to 12331 conditions per place. [2022-12-13 21:40:51,970 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 620 selfloop transitions, 1145 changer transitions 174/1953 dead transitions. [2022-12-13 21:40:51,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 1953 transitions, 68330 flow [2022-12-13 21:40:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 21:40:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 21:40:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3460 transitions. [2022-12-13 21:40:51,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5223429951690821 [2022-12-13 21:40:51,974 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3460 transitions. [2022-12-13 21:40:51,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3460 transitions. [2022-12-13 21:40:51,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:40:51,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3460 transitions. [2022-12-13 21:40:51,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 144.16666666666666) internal successors, (3460), 24 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 276.0) internal successors, (6900), 25 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,980 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 276.0) internal successors, (6900), 25 states have internal predecessors, (6900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,980 INFO L175 Difference]: Start difference. First operand has 224 places, 1603 transitions, 57847 flow. Second operand 24 states and 3460 transitions. [2022-12-13 21:40:51,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 1953 transitions, 68330 flow [2022-12-13 21:41:11,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1953 transitions, 65034 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-12-13 21:41:11,963 INFO L231 Difference]: Finished difference. Result has 243 places, 1564 transitions, 55491 flow [2022-12-13 21:41:11,963 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=54834, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=55491, PETRI_PLACES=243, PETRI_TRANSITIONS=1564} [2022-12-13 21:41:11,964 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 185 predicate places. [2022-12-13 21:41:11,964 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 1564 transitions, 55491 flow [2022-12-13 21:41:11,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:11,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:41:11,964 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:11,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 21:41:11,964 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:41:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1232611587, now seen corresponding path program 25 times [2022-12-13 21:41:11,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:11,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146473074] [2022-12-13 21:41:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:12,119 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 21:41:12,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:12,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146473074] [2022-12-13 21:41:12,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146473074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:12,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:12,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:41:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569385482] [2022-12-13 21:41:12,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:12,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:41:12,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:41:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:41:12,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:41:12,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 1564 transitions, 55491 flow. Second operand has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:12,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:41:12,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:41:12,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:41:29,502 INFO L130 PetriNetUnfolder]: 24245/45610 cut-off events. [2022-12-13 21:41:29,502 INFO L131 PetriNetUnfolder]: For 1606263/1625748 co-relation queries the response was YES. [2022-12-13 21:41:29,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416655 conditions, 45610 events. 24245/45610 cut-off events. For 1606263/1625748 co-relation queries the response was YES. Maximal size of possible extension queue 2425. Compared 457024 event pairs, 2324 based on Foata normal form. 4964/49621 useless extension candidates. Maximal degree in co-relation 341259. Up to 11280 conditions per place. [2022-12-13 21:41:29,902 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 190 selfloop transitions, 1480 changer transitions 42/1726 dead transitions. [2022-12-13 21:41:29,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1726 transitions, 61276 flow [2022-12-13 21:41:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:41:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:41:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1371 transitions. [2022-12-13 21:41:29,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5519323671497585 [2022-12-13 21:41:29,904 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1371 transitions. [2022-12-13 21:41:29,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1371 transitions. [2022-12-13 21:41:29,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:41:29,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1371 transitions. [2022-12-13 21:41:29,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.33333333333334) internal successors, (1371), 9 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:29,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:29,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 276.0) internal successors, (2760), 10 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:29,907 INFO L175 Difference]: Start difference. First operand has 243 places, 1564 transitions, 55491 flow. Second operand 9 states and 1371 transitions. [2022-12-13 21:41:29,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1726 transitions, 61276 flow [2022-12-13 21:41:50,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1726 transitions, 60421 flow, removed 22 selfloop flow, removed 13 redundant places. [2022-12-13 21:41:50,298 INFO L231 Difference]: Finished difference. Result has 240 places, 1558 transitions, 57615 flow [2022-12-13 21:41:50,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=54649, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=57615, PETRI_PLACES=240, PETRI_TRANSITIONS=1558} [2022-12-13 21:41:50,299 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 182 predicate places. [2022-12-13 21:41:50,299 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 1558 transitions, 57615 flow [2022-12-13 21:41:50,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.5) internal successors, (1084), 8 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:50,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:41:50,299 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 21:41:50,299 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:41:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 648281771, now seen corresponding path program 26 times [2022-12-13 21:41:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:50,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996666215] [2022-12-13 21:41:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:41:50,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:50,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996666215] [2022-12-13 21:41:50,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996666215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:50,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:41:50,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:41:50,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004530450] [2022-12-13 21:41:50,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:50,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:41:50,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:50,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:41:50,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:41:50,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:41:50,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 1558 transitions, 57615 flow. Second operand has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:50,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:41:50,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:41:50,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:42:07,637 INFO L130 PetriNetUnfolder]: 23587/44790 cut-off events. [2022-12-13 21:42:07,637 INFO L131 PetriNetUnfolder]: For 1721034/1738885 co-relation queries the response was YES. [2022-12-13 21:42:07,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421760 conditions, 44790 events. 23587/44790 cut-off events. For 1721034/1738885 co-relation queries the response was YES. Maximal size of possible extension queue 2458. Compared 453079 event pairs, 2237 based on Foata normal form. 4704/48569 useless extension candidates. Maximal degree in co-relation 344575. Up to 10832 conditions per place. [2022-12-13 21:42:08,051 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 215 selfloop transitions, 1477 changer transitions 63/1769 dead transitions. [2022-12-13 21:42:08,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1769 transitions, 64108 flow [2022-12-13 21:42:08,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:42:08,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 21:42:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1811 transitions. [2022-12-13 21:42:08,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5467995169082126 [2022-12-13 21:42:08,053 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1811 transitions. [2022-12-13 21:42:08,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1811 transitions. [2022-12-13 21:42:08,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:42:08,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1811 transitions. [2022-12-13 21:42:08,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.91666666666666) internal successors, (1811), 12 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:08,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:08,056 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 276.0) internal successors, (3588), 13 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:08,057 INFO L175 Difference]: Start difference. First operand has 240 places, 1558 transitions, 57615 flow. Second operand 12 states and 1811 transitions. [2022-12-13 21:42:08,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1769 transitions, 64108 flow [2022-12-13 21:42:30,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1769 transitions, 63008 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-12-13 21:42:30,388 INFO L231 Difference]: Finished difference. Result has 248 places, 1555 transitions, 58838 flow [2022-12-13 21:42:30,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=56586, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1426, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=58838, PETRI_PLACES=248, PETRI_TRANSITIONS=1555} [2022-12-13 21:42:30,389 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 190 predicate places. [2022-12-13 21:42:30,389 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 1555 transitions, 58838 flow [2022-12-13 21:42:30,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:30,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:42:30,389 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:42:30,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 21:42:30,389 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:42:30,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:42:30,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1503691749, now seen corresponding path program 27 times [2022-12-13 21:42:30,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:42:30,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569014703] [2022-12-13 21:42:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:42:30,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:42:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:42:30,547 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 21:42:30,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:42:30,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569014703] [2022-12-13 21:42:30,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569014703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:42:30,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:42:30,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:42:30,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57777204] [2022-12-13 21:42:30,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:42:30,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:42:30,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:42:30,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:42:30,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:42:30,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:42:30,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 1555 transitions, 58838 flow. Second operand has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:30,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:42:30,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:42:30,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:42:47,233 INFO L130 PetriNetUnfolder]: 22962/43835 cut-off events. [2022-12-13 21:42:47,233 INFO L131 PetriNetUnfolder]: For 1839529/1853211 co-relation queries the response was YES. [2022-12-13 21:42:47,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418978 conditions, 43835 events. 22962/43835 cut-off events. For 1839529/1853211 co-relation queries the response was YES. Maximal size of possible extension queue 2406. Compared 441717 event pairs, 5452 based on Foata normal form. 2622/45727 useless extension candidates. Maximal degree in co-relation 343680. Up to 22785 conditions per place. [2022-12-13 21:42:47,622 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 877 selfloop transitions, 838 changer transitions 16/1745 dead transitions. [2022-12-13 21:42:47,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1745 transitions, 64510 flow [2022-12-13 21:42:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 21:42:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-12-13 21:42:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3671 transitions. [2022-12-13 21:42:47,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5115663322185061 [2022-12-13 21:42:47,625 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3671 transitions. [2022-12-13 21:42:47,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3671 transitions. [2022-12-13 21:42:47,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:42:47,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3671 transitions. [2022-12-13 21:42:47,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 141.19230769230768) internal successors, (3671), 26 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:47,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 276.0) internal successors, (7452), 27 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:47,632 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 276.0) internal successors, (7452), 27 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:47,633 INFO L175 Difference]: Start difference. First operand has 248 places, 1555 transitions, 58838 flow. Second operand 26 states and 3671 transitions. [2022-12-13 21:42:47,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 1745 transitions, 64510 flow [2022-12-13 21:43:06,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1745 transitions, 64096 flow, removed 118 selfloop flow, removed 3 redundant places. [2022-12-13 21:43:06,719 INFO L231 Difference]: Finished difference. Result has 272 places, 1569 transitions, 60597 flow [2022-12-13 21:43:06,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=58429, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=814, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=60597, PETRI_PLACES=272, PETRI_TRANSITIONS=1569} [2022-12-13 21:43:06,720 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 214 predicate places. [2022-12-13 21:43:06,720 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 1569 transitions, 60597 flow [2022-12-13 21:43:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:06,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:43:06,721 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:06,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 21:43:06,721 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:43:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1369104895, now seen corresponding path program 28 times [2022-12-13 21:43:06,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:43:06,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719874752] [2022-12-13 21:43:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:43:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:06,906 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 21:43:06,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:43:06,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719874752] [2022-12-13 21:43:06,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719874752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:06,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:06,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:43:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351266696] [2022-12-13 21:43:06,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:06,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:43:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:43:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:43:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:43:06,951 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:43:06,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1569 transitions, 60597 flow. Second operand has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:06,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:43:06,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:43:06,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:43:23,496 INFO L130 PetriNetUnfolder]: 22854/43646 cut-off events. [2022-12-13 21:43:23,496 INFO L131 PetriNetUnfolder]: For 1875024/1890364 co-relation queries the response was YES. [2022-12-13 21:43:23,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423551 conditions, 43646 events. 22854/43646 cut-off events. For 1875024/1890364 co-relation queries the response was YES. Maximal size of possible extension queue 2354. Compared 439888 event pairs, 3770 based on Foata normal form. 3490/46330 useless extension candidates. Maximal degree in co-relation 347137. Up to 10086 conditions per place. [2022-12-13 21:43:23,899 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 576 selfloop transitions, 1150 changer transitions 4/1744 dead transitions. [2022-12-13 21:43:23,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 1744 transitions, 65727 flow [2022-12-13 21:43:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 21:43:23,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 21:43:23,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3138 transitions. [2022-12-13 21:43:23,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.516798418972332 [2022-12-13 21:43:23,902 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3138 transitions. [2022-12-13 21:43:23,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3138 transitions. [2022-12-13 21:43:23,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:43:23,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3138 transitions. [2022-12-13 21:43:23,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 142.63636363636363) internal successors, (3138), 22 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:23,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 276.0) internal successors, (6348), 23 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:23,908 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 276.0) internal successors, (6348), 23 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:23,908 INFO L175 Difference]: Start difference. First operand has 272 places, 1569 transitions, 60597 flow. Second operand 22 states and 3138 transitions. [2022-12-13 21:43:23,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 1744 transitions, 65727 flow [2022-12-13 21:43:43,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1744 transitions, 64910 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-12-13 21:43:43,479 INFO L231 Difference]: Finished difference. Result has 290 places, 1591 transitions, 64207 flow [2022-12-13 21:43:43,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=59785, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=64207, PETRI_PLACES=290, PETRI_TRANSITIONS=1591} [2022-12-13 21:43:43,480 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 232 predicate places. [2022-12-13 21:43:43,480 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 1591 transitions, 64207 flow [2022-12-13 21:43:43,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 132.0) internal successors, (1584), 12 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:43,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:43:43,480 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 21:43:43,480 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:43:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash -25148869, now seen corresponding path program 29 times [2022-12-13 21:43:43,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:43:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522862158] [2022-12-13 21:43:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:43:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:43,636 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 21:43:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:43:43,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522862158] [2022-12-13 21:43:43,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522862158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:43:43,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:43:43,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 21:43:43,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119068014] [2022-12-13 21:43:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:43:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:43:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:43:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:43:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:43:43,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 276 [2022-12-13 21:43:43,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 1591 transitions, 64207 flow. Second operand has 11 states, 11 states have (on average 132.27272727272728) internal successors, (1455), 11 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:43,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:43:43,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 276 [2022-12-13 21:43:43,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:02,651 INFO L130 PetriNetUnfolder]: 22912/43843 cut-off events. [2022-12-13 21:44:02,651 INFO L131 PetriNetUnfolder]: For 2109987/2125643 co-relation queries the response was YES. [2022-12-13 21:44:02,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444377 conditions, 43843 events. 22912/43843 cut-off events. For 2109987/2125643 co-relation queries the response was YES. Maximal size of possible extension queue 2326. Compared 442688 event pairs, 3262 based on Foata normal form. 4126/47165 useless extension candidates. Maximal degree in co-relation 365827. Up to 9557 conditions per place. [2022-12-13 21:44:03,096 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 534 selfloop transitions, 1245 changer transitions 26/1819 dead transitions. [2022-12-13 21:44:03,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1819 transitions, 71735 flow [2022-12-13 21:44:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 21:44:03,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 21:44:03,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3268 transitions. [2022-12-13 21:44:03,100 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148078134845621 [2022-12-13 21:44:03,100 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3268 transitions. [2022-12-13 21:44:03,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3268 transitions. [2022-12-13 21:44:03,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:03,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3268 transitions. [2022-12-13 21:44:03,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 142.08695652173913) internal successors, (3268), 23 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:03,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 276.0) internal successors, (6624), 24 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:03,106 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 276.0) internal successors, (6624), 24 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:03,106 INFO L175 Difference]: Start difference. First operand has 290 places, 1591 transitions, 64207 flow. Second operand 23 states and 3268 transitions. [2022-12-13 21:44:03,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1819 transitions, 71735 flow [2022-12-13 21:44:32,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1819 transitions, 71354 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-12-13 21:44:32,751 INFO L231 Difference]: Finished difference. Result has 304 places, 1643 transitions, 69063 flow [2022-12-13 21:44:32,752 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=63844, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=69063, PETRI_PLACES=304, PETRI_TRANSITIONS=1643} [2022-12-13 21:44:32,753 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 246 predicate places. [2022-12-13 21:44:32,753 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1643 transitions, 69063 flow [2022-12-13 21:44:32,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 132.27272727272728) internal successors, (1455), 11 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:32,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:32,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:32,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 21:44:32,753 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:44:32,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1647201961, now seen corresponding path program 30 times [2022-12-13 21:44:32,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:32,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097347767] [2022-12-13 21:44:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:32,866 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 21:44:32,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:32,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097347767] [2022-12-13 21:44:32,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097347767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:44:32,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:44:32,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:44:32,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583323524] [2022-12-13 21:44:32,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:44:32,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:44:32,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:44:32,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:44:32,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:44:32,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1643 transitions, 69063 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:32,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:32,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:44:32,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:52,636 INFO L130 PetriNetUnfolder]: 22621/43112 cut-off events. [2022-12-13 21:44:52,637 INFO L131 PetriNetUnfolder]: For 2305838/2323384 co-relation queries the response was YES. [2022-12-13 21:44:52,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459278 conditions, 43112 events. 22621/43112 cut-off events. For 2305838/2323384 co-relation queries the response was YES. Maximal size of possible extension queue 2298. Compared 434510 event pairs, 2333 based on Foata normal form. 4290/46479 useless extension candidates. Maximal degree in co-relation 376711. Up to 11886 conditions per place. [2022-12-13 21:44:53,087 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 186 selfloop transitions, 1530 changer transitions 40/1770 dead transitions. [2022-12-13 21:44:53,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1770 transitions, 74207 flow [2022-12-13 21:44:53,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:44:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 21:44:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1222 transitions. [2022-12-13 21:44:53,089 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5534420289855072 [2022-12-13 21:44:53,089 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1222 transitions. [2022-12-13 21:44:53,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1222 transitions. [2022-12-13 21:44:53,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:53,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1222 transitions. [2022-12-13 21:44:53,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.75) internal successors, (1222), 8 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:53,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:53,092 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 276.0) internal successors, (2484), 9 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:53,092 INFO L175 Difference]: Start difference. First operand has 304 places, 1643 transitions, 69063 flow. Second operand 8 states and 1222 transitions. [2022-12-13 21:44:53,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1770 transitions, 74207 flow [2022-12-13 21:45:27,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 1770 transitions, 74053 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-12-13 21:45:27,152 INFO L231 Difference]: Finished difference. Result has 303 places, 1627 transitions, 71210 flow [2022-12-13 21:45:27,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=68938, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=71210, PETRI_PLACES=303, PETRI_TRANSITIONS=1627} [2022-12-13 21:45:27,153 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 245 predicate places. [2022-12-13 21:45:27,153 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 1627 transitions, 71210 flow [2022-12-13 21:45:27,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:27,154 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:27,154 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:27,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 21:45:27,154 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:45:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:27,154 INFO L85 PathProgramCache]: Analyzing trace with hash 123462005, now seen corresponding path program 31 times [2022-12-13 21:45:27,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:27,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315187675] [2022-12-13 21:45:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:27,296 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 21:45:27,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:27,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315187675] [2022-12-13 21:45:27,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315187675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:45:27,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:45:27,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 21:45:27,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435715388] [2022-12-13 21:45:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:45:27,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:45:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:45:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:45:27,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:45:27,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 1627 transitions, 71210 flow. Second operand has 11 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:27,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:27,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:45:27,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:45:47,066 INFO L130 PetriNetUnfolder]: 22068/42321 cut-off events. [2022-12-13 21:45:47,066 INFO L131 PetriNetUnfolder]: For 2413358/2429672 co-relation queries the response was YES. [2022-12-13 21:45:47,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461495 conditions, 42321 events. 22068/42321 cut-off events. For 2413358/2429672 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 426883 event pairs, 2041 based on Foata normal form. 4390/45747 useless extension candidates. Maximal degree in co-relation 376514. Up to 10631 conditions per place. [2022-12-13 21:45:47,498 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 179 selfloop transitions, 1626 changer transitions 23/1842 dead transitions. [2022-12-13 21:45:47,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 1842 transitions, 78639 flow [2022-12-13 21:45:47,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:45:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 21:45:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2500 transitions. [2022-12-13 21:45:47,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5328218243819267 [2022-12-13 21:45:47,501 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2500 transitions. [2022-12-13 21:45:47,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2500 transitions. [2022-12-13 21:45:47,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:47,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2500 transitions. [2022-12-13 21:45:47,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 147.05882352941177) internal successors, (2500), 17 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:47,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:47,505 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:47,505 INFO L175 Difference]: Start difference. First operand has 303 places, 1627 transitions, 71210 flow. Second operand 17 states and 2500 transitions. [2022-12-13 21:45:47,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 1842 transitions, 78639 flow [2022-12-13 21:46:18,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 1842 transitions, 77736 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 21:46:18,744 INFO L231 Difference]: Finished difference. Result has 320 places, 1674 transitions, 76260 flow [2022-12-13 21:46:18,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=70373, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=76260, PETRI_PLACES=320, PETRI_TRANSITIONS=1674} [2022-12-13 21:46:18,745 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 262 predicate places. [2022-12-13 21:46:18,745 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 1674 transitions, 76260 flow [2022-12-13 21:46:18,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:18,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:46:18,746 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:46:18,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 21:46:18,746 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:46:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:46:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1442671767, now seen corresponding path program 32 times [2022-12-13 21:46:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:46:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678261482] [2022-12-13 21:46:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:46:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:46:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:46:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:46:18,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:46:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678261482] [2022-12-13 21:46:18,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678261482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:46:18,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:46:18,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 21:46:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084884417] [2022-12-13 21:46:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:46:18,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:46:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:46:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:46:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:46:18,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:46:18,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1674 transitions, 76260 flow. Second operand has 11 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:18,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:46:18,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:46:18,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:46:39,496 INFO L130 PetriNetUnfolder]: 22409/43072 cut-off events. [2022-12-13 21:46:39,496 INFO L131 PetriNetUnfolder]: For 2656680/2673368 co-relation queries the response was YES. [2022-12-13 21:46:39,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485623 conditions, 43072 events. 22409/43072 cut-off events. For 2656680/2673368 co-relation queries the response was YES. Maximal size of possible extension queue 2351. Compared 437404 event pairs, 2142 based on Foata normal form. 4350/46468 useless extension candidates. Maximal degree in co-relation 395056. Up to 10692 conditions per place. [2022-12-13 21:46:39,938 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 143 selfloop transitions, 1421 changer transitions 351/1929 dead transitions. [2022-12-13 21:46:39,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 1929 transitions, 85420 flow [2022-12-13 21:46:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:46:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 21:46:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2496 transitions. [2022-12-13 21:46:39,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5319693094629157 [2022-12-13 21:46:39,940 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2496 transitions. [2022-12-13 21:46:39,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2496 transitions. [2022-12-13 21:46:39,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:46:39,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2496 transitions. [2022-12-13 21:46:39,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 146.8235294117647) internal successors, (2496), 17 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:39,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:39,945 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:46:39,945 INFO L175 Difference]: Start difference. First operand has 320 places, 1674 transitions, 76260 flow. Second operand 17 states and 2496 transitions. [2022-12-13 21:46:39,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 1929 transitions, 85420 flow [2022-12-13 21:47:18,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 1929 transitions, 85338 flow, removed 38 selfloop flow, removed 1 redundant places. [2022-12-13 21:47:18,067 INFO L231 Difference]: Finished difference. Result has 337 places, 1467 transitions, 68601 flow [2022-12-13 21:47:18,068 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=76188, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=68601, PETRI_PLACES=337, PETRI_TRANSITIONS=1467} [2022-12-13 21:47:18,069 INFO L288 CegarLoopForPetriNet]: 58 programPoint places, 279 predicate places. [2022-12-13 21:47:18,069 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 1467 transitions, 68601 flow [2022-12-13 21:47:18,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:18,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:47:18,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:47:18,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 21:47:18,069 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 21:47:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:47:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1216471331, now seen corresponding path program 33 times [2022-12-13 21:47:18,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:47:18,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533412830] [2022-12-13 21:47:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:47:18,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:47:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:47:18,208 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 21:47:18,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:47:18,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533412830] [2022-12-13 21:47:18,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533412830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:47:18,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:47:18,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 21:47:18,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492036822] [2022-12-13 21:47:18,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:47:18,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:47:18,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:47:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:47:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:47:18,227 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 276 [2022-12-13 21:47:18,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 1467 transitions, 68601 flow. Second operand has 11 states, 11 states have (on average 134.27272727272728) internal successors, (1477), 11 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:18,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:47:18,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 276 [2022-12-13 21:47:18,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:47:35,690 INFO L130 PetriNetUnfolder]: 20161/38994 cut-off events. [2022-12-13 21:47:35,690 INFO L131 PetriNetUnfolder]: For 2619611/2635843 co-relation queries the response was YES. [2022-12-13 21:47:35,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456386 conditions, 38994 events. 20161/38994 cut-off events. For 2619611/2635843 co-relation queries the response was YES. Maximal size of possible extension queue 2068. Compared 393240 event pairs, 1958 based on Foata normal form. 4456/42558 useless extension candidates. Maximal degree in co-relation 372113. Up to 10047 conditions per place. [2022-12-13 21:47:36,104 INFO L137 encePairwiseOnDemand]: 264/276 looper letters, 183 selfloop transitions, 1430 changer transitions 58/1685 dead transitions. [2022-12-13 21:47:36,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1685 transitions, 75505 flow [2022-12-13 21:47:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:47:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 21:47:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2509 transitions. [2022-12-13 21:47:36,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5347399829497016 [2022-12-13 21:47:36,107 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2509 transitions. [2022-12-13 21:47:36,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2509 transitions. [2022-12-13 21:47:36,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:47:36,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2509 transitions. [2022-12-13 21:47:36,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 147.58823529411765) internal successors, (2509), 17 states have internal predecessors, (2509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:36,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:36,111 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 276.0) internal successors, (4968), 18 states have internal predecessors, (4968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:47:36,111 INFO L175 Difference]: Start difference. First operand has 337 places, 1467 transitions, 68601 flow. Second operand 17 states and 2509 transitions. [2022-12-13 21:47:36,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1685 transitions, 75505 flow