./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/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_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 12:33:45,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:33:45,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:33:45,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:33:45,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:33:45,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:33:45,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:33:45,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:33:45,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:33:45,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:33:45,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:33:45,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:33:45,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:33:45,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:33:45,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:33:45,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:33:45,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:33:45,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:33:45,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:33:45,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:33:45,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:33:45,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:33:45,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:33:45,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:33:45,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:33:45,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:33:45,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:33:45,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:33:45,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:33:45,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:33:45,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:33:45,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:33:45,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:33:45,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:33:45,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:33:45,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:33:45,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:33:45,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:33:45,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:33:45,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:33:45,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:33:45,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 12:33:45,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:33:45,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:33:45,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:33:45,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:33:45,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:33:45,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:33:45,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:33:45,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:33:45,979 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:33:45,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:33:45,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:33:45,980 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 12:33:45,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:33:45,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:33:45,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:33:45,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:33:45,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:33:45,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:33:45,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:33:45,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:33:45,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:33:45,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:33:45,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:33:45,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:33:45,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:33:45,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:33:45,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:33:45,983 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:33:45,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:33:45,983 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:33:45,983 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d [2022-12-13 12:33:46,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:33:46,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:33:46,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:33:46,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:33:46,186 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:33:46,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i [2022-12-13 12:33:48,729 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:33:48,911 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:33:48,912 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i [2022-12-13 12:33:48,921 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/data/999da254f/8b07488a86c04d6abf39f7f34ab8ba76/FLAG9f5338dfa [2022-12-13 12:33:48,932 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/data/999da254f/8b07488a86c04d6abf39f7f34ab8ba76 [2022-12-13 12:33:48,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:33:48,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:33:48,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:33:48,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:33:48,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:33:48,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:33:48" (1/1) ... [2022-12-13 12:33:48,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf6cb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:48, skipping insertion in model container [2022-12-13 12:33:48,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:33:48" (1/1) ... [2022-12-13 12:33:48,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:33:48,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:33:49,088 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:33:49,241 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[30448,30461] [2022-12-13 12:33:49,253 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[30811,30824] [2022-12-13 12:33:49,266 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31483,31496] [2022-12-13 12:33:49,267 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31534,31547] [2022-12-13 12:33:49,270 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31683,31696] [2022-12-13 12:33:49,271 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31760,31773] [2022-12-13 12:33:49,271 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31807,31820] [2022-12-13 12:33:49,273 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31916,31929] [2022-12-13 12:33:49,275 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32035,32048] [2022-12-13 12:33:49,276 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32083,32096] [2022-12-13 12:33:49,277 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32160,32173] [2022-12-13 12:33:49,278 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32286,32299] [2022-12-13 12:33:49,287 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32869,32882] [2022-12-13 12:33:49,288 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32946,32959] [2022-12-13 12:33:49,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:33:49,300 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:33:49,313 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:33:49,332 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[30448,30461] [2022-12-13 12:33:49,336 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[30811,30824] [2022-12-13 12:33:49,343 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31483,31496] [2022-12-13 12:33:49,344 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31534,31547] [2022-12-13 12:33:49,346 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31683,31696] [2022-12-13 12:33:49,347 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31760,31773] [2022-12-13 12:33:49,348 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31807,31820] [2022-12-13 12:33:49,350 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[31916,31929] [2022-12-13 12:33:49,351 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32035,32048] [2022-12-13 12:33:49,352 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32083,32096] [2022-12-13 12:33:49,353 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32160,32173] [2022-12-13 12:33:49,354 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32286,32299] [2022-12-13 12:33:49,361 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32869,32882] [2022-12-13 12:33:49,362 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_35da70be-f2e8-4001-85a9-111c9ac0da1d/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i[32946,32959] [2022-12-13 12:33:49,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:33:49,393 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:33:49,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49 WrapperNode [2022-12-13 12:33:49,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:33:49,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:33:49,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:33:49,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:33:49,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,451 INFO L138 Inliner]: procedures = 174, calls = 70, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 781 [2022-12-13 12:33:49,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:33:49,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:33:49,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:33:49,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:33:49,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,507 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:33:49,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:33:49,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:33:49,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:33:49,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (1/1) ... [2022-12-13 12:33:49,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:33:49,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:33:49,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:33:49,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:33:49,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:33:49,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:33:49,594 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:33:49,594 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-12-13 12:33:49,594 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-12-13 12:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 12:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 12:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:33:49,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:33:49,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:33:49,597 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:33:49,727 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:33:49,729 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:33:50,537 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:33:50,552 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:33:50,553 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 12:33:50,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:33:50 BoogieIcfgContainer [2022-12-13 12:33:50,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:33:50,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:33:50,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:33:50,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:33:50,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:33:48" (1/3) ... [2022-12-13 12:33:50,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b845a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:33:50, skipping insertion in model container [2022-12-13 12:33:50,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:33:49" (2/3) ... [2022-12-13 12:33:50,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b845a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:33:50, skipping insertion in model container [2022-12-13 12:33:50,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:33:50" (3/3) ... [2022-12-13 12:33:50,564 INFO L112 eAbstractionObserver]: Analyzing ICFG one_time_barrier_2t.i [2022-12-13 12:33:50,571 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:33:50,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:33:50,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2022-12-13 12:33:50,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:33:50,726 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 12:33:50,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 839 places, 898 transitions, 1804 flow [2022-12-13 12:33:51,134 INFO L130 PetriNetUnfolder]: 94/1320 cut-off events. [2022-12-13 12:33:51,135 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:33:51,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 1320 events. 94/1320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4487 event pairs, 0 based on Foata normal form. 0/1110 useless extension candidates. Maximal degree in co-relation 792. Up to 4 conditions per place. [2022-12-13 12:33:51,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 839 places, 898 transitions, 1804 flow [2022-12-13 12:33:51,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 839 places, 898 transitions, 1804 flow [2022-12-13 12:33:51,180 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:33:51,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 839 places, 898 transitions, 1804 flow [2022-12-13 12:33:51,191 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 839 places, 898 transitions, 1804 flow [2022-12-13 12:33:51,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 839 places, 898 transitions, 1804 flow [2022-12-13 12:33:51,485 INFO L130 PetriNetUnfolder]: 94/1320 cut-off events. [2022-12-13 12:33:51,485 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:33:51,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 1320 events. 94/1320 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4487 event pairs, 0 based on Foata normal form. 0/1110 useless extension candidates. Maximal degree in co-relation 792. Up to 4 conditions per place. [2022-12-13 12:33:51,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 312440 [2022-12-13 12:34:22,767 WARN L233 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 120 DAG size of output: 118 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:34:34,297 WARN L233 SmtUtils]: Spent 9.69s on a formula simplification. DAG size of input: 129 DAG size of output: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-13 12:34:42,053 INFO L134 LiptonReduction]: Checked pairs total: 1823145 [2022-12-13 12:34:42,053 INFO L136 LiptonReduction]: Total number of compositions: 555 [2022-12-13 12:34:42,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:34:42,072 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;@3c817dac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:34:42,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 111 error locations. [2022-12-13 12:34:42,075 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 12:34:42,075 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:34:42,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:42,075 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 12:34:42,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:34:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash 96382, now seen corresponding path program 1 times [2022-12-13 12:34:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:42,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972377851] [2022-12-13 12:34:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:34:42,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:42,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972377851] [2022-12-13 12:34:42,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972377851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:42,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:42,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 12:34:42,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930510913] [2022-12-13 12:34:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:42,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:34:42,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:34:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:34:42,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 853 out of 1453 [2022-12-13 12:34:42,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 485 transitions, 978 flow. Second operand has 2 states, 2 states have (on average 854.0) internal successors, (1708), 2 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:42,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:42,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 853 of 1453 [2022-12-13 12:34:42,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:45,223 INFO L130 PetriNetUnfolder]: 5876/20324 cut-off events. [2022-12-13 12:34:45,224 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 12:34:45,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31106 conditions, 20324 events. 5876/20324 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 197713 event pairs, 4686 based on Foata normal form. 1182/19051 useless extension candidates. Maximal degree in co-relation 30771. Up to 10774 conditions per place. [2022-12-13 12:34:45,315 INFO L137 encePairwiseOnDemand]: 1428/1453 looper letters, 160 selfloop transitions, 0 changer transitions 0/454 dead transitions. [2022-12-13 12:34:45,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 454 transitions, 1236 flow [2022-12-13 12:34:45,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:34:45,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:34:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1891 transitions. [2022-12-13 12:34:45,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6507226428079835 [2022-12-13 12:34:45,331 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1891 transitions. [2022-12-13 12:34:45,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1891 transitions. [2022-12-13 12:34:45,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:45,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1891 transitions. [2022-12-13 12:34:45,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 945.5) internal successors, (1891), 2 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:45,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1453.0) internal successors, (4359), 3 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:45,353 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1453.0) internal successors, (4359), 3 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:45,355 INFO L175 Difference]: Start difference. First operand has 449 places, 485 transitions, 978 flow. Second operand 2 states and 1891 transitions. [2022-12-13 12:34:45,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 454 transitions, 1236 flow [2022-12-13 12:34:45,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 454 transitions, 1236 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:34:45,367 INFO L231 Difference]: Finished difference. Result has 439 places, 454 transitions, 916 flow [2022-12-13 12:34:45,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=916, PETRI_PLACES=439, PETRI_TRANSITIONS=454} [2022-12-13 12:34:45,372 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, -10 predicate places. [2022-12-13 12:34:45,372 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 454 transitions, 916 flow [2022-12-13 12:34:45,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 854.0) internal successors, (1708), 2 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:45,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:45,373 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-12-13 12:34:45,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:34:45,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:34:45,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:45,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1835131449, now seen corresponding path program 1 times [2022-12-13 12:34:45,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:45,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341730533] [2022-12-13 12:34:45,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:45,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:34:45,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:45,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341730533] [2022-12-13 12:34:45,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341730533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:45,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:45,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:34:45,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799392860] [2022-12-13 12:34:45,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:45,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:34:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:34:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:34:45,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 849 out of 1453 [2022-12-13 12:34:45,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 454 transitions, 916 flow. Second operand has 3 states, 3 states have (on average 850.6666666666666) internal successors, (2552), 3 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:45,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:45,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 849 of 1453 [2022-12-13 12:34:45,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:48,412 INFO L130 PetriNetUnfolder]: 5876/20325 cut-off events. [2022-12-13 12:34:48,413 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 12:34:48,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 20325 events. 5876/20325 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 198121 event pairs, 4686 based on Foata normal form. 0/17870 useless extension candidates. Maximal degree in co-relation 31105. Up to 10774 conditions per place. [2022-12-13 12:34:48,475 INFO L137 encePairwiseOnDemand]: 1450/1453 looper letters, 159 selfloop transitions, 2 changer transitions 0/455 dead transitions. [2022-12-13 12:34:48,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 455 transitions, 1240 flow [2022-12-13 12:34:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:34:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:34:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2709 transitions. [2022-12-13 12:34:48,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6214728148657949 [2022-12-13 12:34:48,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2709 transitions. [2022-12-13 12:34:48,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2709 transitions. [2022-12-13 12:34:48,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:48,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2709 transitions. [2022-12-13 12:34:48,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 903.0) internal successors, (2709), 3 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:48,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:48,505 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:48,505 INFO L175 Difference]: Start difference. First operand has 439 places, 454 transitions, 916 flow. Second operand 3 states and 2709 transitions. [2022-12-13 12:34:48,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 455 transitions, 1240 flow [2022-12-13 12:34:48,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 455 transitions, 1240 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:34:48,513 INFO L231 Difference]: Finished difference. Result has 442 places, 455 transitions, 928 flow [2022-12-13 12:34:48,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=928, PETRI_PLACES=442, PETRI_TRANSITIONS=455} [2022-12-13 12:34:48,514 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, -7 predicate places. [2022-12-13 12:34:48,515 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 455 transitions, 928 flow [2022-12-13 12:34:48,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 850.6666666666666) internal successors, (2552), 3 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:48,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:48,516 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:48,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:34:48,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:34:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1800229957, now seen corresponding path program 1 times [2022-12-13 12:34:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:48,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368769587] [2022-12-13 12:34:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:34:48,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:48,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368769587] [2022-12-13 12:34:48,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368769587] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:48,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518128470] [2022-12-13 12:34:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:48,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:48,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:48,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:48,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:34:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:48,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:34:48,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:34:48,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:34:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 12:34:48,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518128470] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:34:48,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:34:48,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-12-13 12:34:48,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791455440] [2022-12-13 12:34:48,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:34:48,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 12:34:48,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:48,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 12:34:48,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:34:48,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 848 out of 1453 [2022-12-13 12:34:48,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 455 transitions, 928 flow. Second operand has 5 states, 5 states have (on average 849.6) internal successors, (4248), 5 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:48,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:48,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 848 of 1453 [2022-12-13 12:34:48,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:52,152 INFO L130 PetriNetUnfolder]: 5876/20326 cut-off events. [2022-12-13 12:34:52,152 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 12:34:52,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31119 conditions, 20326 events. 5876/20326 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 198004 event pairs, 4686 based on Foata normal form. 0/17871 useless extension candidates. Maximal degree in co-relation 31113. Up to 10774 conditions per place. [2022-12-13 12:34:52,200 INFO L137 encePairwiseOnDemand]: 1450/1453 looper letters, 159 selfloop transitions, 3 changer transitions 0/456 dead transitions. [2022-12-13 12:34:52,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 456 transitions, 1256 flow [2022-12-13 12:34:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:34:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:34:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3555 transitions. [2022-12-13 12:34:52,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6116655196145905 [2022-12-13 12:34:52,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3555 transitions. [2022-12-13 12:34:52,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3555 transitions. [2022-12-13 12:34:52,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:52,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3555 transitions. [2022-12-13 12:34:52,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 888.75) internal successors, (3555), 4 states have internal predecessors, (3555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:52,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1453.0) internal successors, (7265), 5 states have internal predecessors, (7265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:52,232 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1453.0) internal successors, (7265), 5 states have internal predecessors, (7265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:52,232 INFO L175 Difference]: Start difference. First operand has 442 places, 455 transitions, 928 flow. Second operand 4 states and 3555 transitions. [2022-12-13 12:34:52,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 456 transitions, 1256 flow [2022-12-13 12:34:52,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 456 transitions, 1252 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:34:52,242 INFO L231 Difference]: Finished difference. Result has 445 places, 456 transitions, 940 flow [2022-12-13 12:34:52,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=940, PETRI_PLACES=445, PETRI_TRANSITIONS=456} [2022-12-13 12:34:52,243 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, -4 predicate places. [2022-12-13 12:34:52,244 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 456 transitions, 940 flow [2022-12-13 12:34:52,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 849.6) internal successors, (4248), 5 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:52,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:52,245 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 12:34:52,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:34:52,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:52,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:34:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1467683449, now seen corresponding path program 2 times [2022-12-13 12:34:52,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:52,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977333599] [2022-12-13 12:34:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:52,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:34:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:52,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977333599] [2022-12-13 12:34:52,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977333599] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:34:52,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24917110] [2022-12-13 12:34:52,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:34:52,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:52,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:34:52,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:34:52,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:34:52,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:34:52,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:34:52,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:34:52,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:34:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:34:52,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:34:52,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24917110] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:52,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:34:52,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-13 12:34:52,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486600811] [2022-12-13 12:34:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:52,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 12:34:52,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 12:34:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 12:34:52,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 848 out of 1453 [2022-12-13 12:34:52,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 456 transitions, 940 flow. Second operand has 4 states, 4 states have (on average 849.75) internal successors, (3399), 4 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:52,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:52,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 848 of 1453 [2022-12-13 12:34:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:55,791 INFO L130 PetriNetUnfolder]: 5802/19978 cut-off events. [2022-12-13 12:34:55,792 INFO L131 PetriNetUnfolder]: For 9/15 co-relation queries the response was YES. [2022-12-13 12:34:55,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30632 conditions, 19978 events. 5802/19978 cut-off events. For 9/15 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 194380 event pairs, 4485 based on Foata normal form. 0/17621 useless extension candidates. Maximal degree in co-relation 30625. Up to 10553 conditions per place. [2022-12-13 12:34:55,853 INFO L137 encePairwiseOnDemand]: 1449/1453 looper letters, 234 selfloop transitions, 3 changer transitions 0/530 dead transitions. [2022-12-13 12:34:55,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 530 transitions, 1560 flow [2022-12-13 12:34:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 12:34:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 12:34:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3628 transitions. [2022-12-13 12:34:55,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6242257398485891 [2022-12-13 12:34:55,863 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3628 transitions. [2022-12-13 12:34:55,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3628 transitions. [2022-12-13 12:34:55,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:55,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3628 transitions. [2022-12-13 12:34:55,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 907.0) internal successors, (3628), 4 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:55,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1453.0) internal successors, (7265), 5 states have internal predecessors, (7265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:55,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1453.0) internal successors, (7265), 5 states have internal predecessors, (7265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:55,887 INFO L175 Difference]: Start difference. First operand has 445 places, 456 transitions, 940 flow. Second operand 4 states and 3628 transitions. [2022-12-13 12:34:55,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 530 transitions, 1560 flow [2022-12-13 12:34:55,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 530 transitions, 1548 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 12:34:55,897 INFO L231 Difference]: Finished difference. Result has 445 places, 456 transitions, 941 flow [2022-12-13 12:34:55,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=941, PETRI_PLACES=445, PETRI_TRANSITIONS=456} [2022-12-13 12:34:55,898 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, -4 predicate places. [2022-12-13 12:34:55,898 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 456 transitions, 941 flow [2022-12-13 12:34:55,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 849.75) internal successors, (3399), 4 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:55,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:55,900 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:55,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:34:56,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:34:56,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:34:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:56,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1525012042, now seen corresponding path program 1 times [2022-12-13 12:34:56,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:56,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343500007] [2022-12-13 12:34:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:56,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:34:56,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:56,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343500007] [2022-12-13 12:34:56,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343500007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:56,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:56,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:34:56,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788336404] [2022-12-13 12:34:56,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:56,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:34:56,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:56,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:34:56,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:34:56,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 849 out of 1453 [2022-12-13 12:34:56,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 456 transitions, 941 flow. Second operand has 3 states, 3 states have (on average 850.3333333333334) internal successors, (2551), 3 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:56,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:34:56,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 849 of 1453 [2022-12-13 12:34:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:34:59,367 INFO L130 PetriNetUnfolder]: 5793/19925 cut-off events. [2022-12-13 12:34:59,367 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2022-12-13 12:34:59,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30706 conditions, 19925 events. 5793/19925 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 193434 event pairs, 4485 based on Foata normal form. 1/17562 useless extension candidates. Maximal degree in co-relation 30698. Up to 10487 conditions per place. [2022-12-13 12:34:59,423 INFO L137 encePairwiseOnDemand]: 1450/1453 looper letters, 234 selfloop transitions, 2 changer transitions 0/529 dead transitions. [2022-12-13 12:34:59,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 529 transitions, 1555 flow [2022-12-13 12:34:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:34:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:34:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2782 transitions. [2022-12-13 12:34:59,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.638219775177793 [2022-12-13 12:34:59,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2782 transitions. [2022-12-13 12:34:59,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2782 transitions. [2022-12-13 12:34:59,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:34:59,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2782 transitions. [2022-12-13 12:34:59,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 927.3333333333334) internal successors, (2782), 3 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:59,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:59,435 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:59,435 INFO L175 Difference]: Start difference. First operand has 445 places, 456 transitions, 941 flow. Second operand 3 states and 2782 transitions. [2022-12-13 12:34:59,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 529 transitions, 1555 flow [2022-12-13 12:34:59,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 529 transitions, 1552 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:34:59,440 INFO L231 Difference]: Finished difference. Result has 445 places, 455 transitions, 936 flow [2022-12-13 12:34:59,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=445, PETRI_TRANSITIONS=455} [2022-12-13 12:34:59,441 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, -4 predicate places. [2022-12-13 12:34:59,442 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 455 transitions, 936 flow [2022-12-13 12:34:59,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 850.3333333333334) internal successors, (2551), 3 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:34:59,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:34:59,442 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:34:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:34:59,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting worker_fnErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:34:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:34:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash 349681412, now seen corresponding path program 1 times [2022-12-13 12:34:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:34:59,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225701339] [2022-12-13 12:34:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:34:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:34:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:34:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:34:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:34:59,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225701339] [2022-12-13 12:34:59,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225701339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:34:59,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:34:59,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:34:59,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522463630] [2022-12-13 12:34:59,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:34:59,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:34:59,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:34:59,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:34:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:35:01,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 800 out of 1453 [2022-12-13 12:35:01,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 455 transitions, 936 flow. Second operand has 6 states, 6 states have (on average 801.8333333333334) internal successors, (4811), 6 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:01,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:01,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 800 of 1453 [2022-12-13 12:35:01,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:06,041 INFO L130 PetriNetUnfolder]: 8082/25695 cut-off events. [2022-12-13 12:35:06,041 INFO L131 PetriNetUnfolder]: For 329/329 co-relation queries the response was YES. [2022-12-13 12:35:06,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40960 conditions, 25695 events. 8082/25695 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 247310 event pairs, 5758 based on Foata normal form. 0/22751 useless extension candidates. Maximal degree in co-relation 40952. Up to 13946 conditions per place. [2022-12-13 12:35:06,139 INFO L137 encePairwiseOnDemand]: 1433/1453 looper letters, 476 selfloop transitions, 58 changer transitions 0/805 dead transitions. [2022-12-13 12:35:06,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 805 transitions, 2732 flow [2022-12-13 12:35:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:35:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:35:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5333 transitions. [2022-12-13 12:35:06,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6117228722183987 [2022-12-13 12:35:06,145 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5333 transitions. [2022-12-13 12:35:06,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5333 transitions. [2022-12-13 12:35:06,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:06,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5333 transitions. [2022-12-13 12:35:06,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 888.8333333333334) internal successors, (5333), 6 states have internal predecessors, (5333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:06,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1453.0) internal successors, (10171), 7 states have internal predecessors, (10171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:06,160 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1453.0) internal successors, (10171), 7 states have internal predecessors, (10171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:06,160 INFO L175 Difference]: Start difference. First operand has 445 places, 455 transitions, 936 flow. Second operand 6 states and 5333 transitions. [2022-12-13 12:35:06,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 805 transitions, 2732 flow [2022-12-13 12:35:06,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 805 transitions, 2720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:35:06,167 INFO L231 Difference]: Finished difference. Result has 453 places, 512 transitions, 1316 flow [2022-12-13 12:35:06,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1316, PETRI_PLACES=453, PETRI_TRANSITIONS=512} [2022-12-13 12:35:06,169 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 4 predicate places. [2022-12-13 12:35:06,169 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 512 transitions, 1316 flow [2022-12-13 12:35:06,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 801.8333333333334) internal successors, (4811), 6 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:06,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:06,170 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:06,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:35:06,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:35:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash -773928444, now seen corresponding path program 1 times [2022-12-13 12:35:06,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:35:06,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962009122] [2022-12-13 12:35:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:06,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:35:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:35:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:35:06,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962009122] [2022-12-13 12:35:06,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962009122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:35:06,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:35:06,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:35:06,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793068172] [2022-12-13 12:35:06,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:35:06,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 12:35:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:35:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 12:35:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 12:35:08,077 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 799 out of 1453 [2022-12-13 12:35:08,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 512 transitions, 1316 flow. Second operand has 6 states, 6 states have (on average 801.0) internal successors, (4806), 6 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:08,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:08,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 799 of 1453 [2022-12-13 12:35:08,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:12,412 INFO L130 PetriNetUnfolder]: 8425/27229 cut-off events. [2022-12-13 12:35:12,412 INFO L131 PetriNetUnfolder]: For 1618/1724 co-relation queries the response was YES. [2022-12-13 12:35:12,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45047 conditions, 27229 events. 8425/27229 cut-off events. For 1618/1724 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 264979 event pairs, 5745 based on Foata normal form. 47/24218 useless extension candidates. Maximal degree in co-relation 45035. Up to 14702 conditions per place. [2022-12-13 12:35:12,509 INFO L137 encePairwiseOnDemand]: 1433/1453 looper letters, 518 selfloop transitions, 62 changer transitions 0/854 dead transitions. [2022-12-13 12:35:12,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 854 transitions, 3186 flow [2022-12-13 12:35:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:35:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:35:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5319 transitions. [2022-12-13 12:35:12,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6101169993117688 [2022-12-13 12:35:12,515 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5319 transitions. [2022-12-13 12:35:12,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5319 transitions. [2022-12-13 12:35:12,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:12,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5319 transitions. [2022-12-13 12:35:12,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 886.5) internal successors, (5319), 6 states have internal predecessors, (5319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:12,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1453.0) internal successors, (10171), 7 states have internal predecessors, (10171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:12,529 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1453.0) internal successors, (10171), 7 states have internal predecessors, (10171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:12,529 INFO L175 Difference]: Start difference. First operand has 453 places, 512 transitions, 1316 flow. Second operand 6 states and 5319 transitions. [2022-12-13 12:35:12,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 854 transitions, 3186 flow [2022-12-13 12:35:12,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 854 transitions, 3186 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:35:12,539 INFO L231 Difference]: Finished difference. Result has 463 places, 569 transitions, 1734 flow [2022-12-13 12:35:12,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1734, PETRI_PLACES=463, PETRI_TRANSITIONS=569} [2022-12-13 12:35:12,540 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 14 predicate places. [2022-12-13 12:35:12,540 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 569 transitions, 1734 flow [2022-12-13 12:35:12,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 801.0) internal successors, (4806), 6 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:12,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:12,541 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:35:12,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting worker_fnErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:35:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2085302457, now seen corresponding path program 1 times [2022-12-13 12:35:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:35:12,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227388746] [2022-12-13 12:35:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:12,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:35:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:35:12,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:35:12,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227388746] [2022-12-13 12:35:12,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227388746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:35:12,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:35:12,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:35:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371260811] [2022-12-13 12:35:12,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:35:12,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:35:12,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:35:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:35:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:35:13,015 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 639 out of 1453 [2022-12-13 12:35:13,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 569 transitions, 1734 flow. Second operand has 3 states, 3 states have (on average 643.6666666666666) internal successors, (1931), 3 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:13,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:13,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 639 of 1453 [2022-12-13 12:35:13,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:22,667 INFO L130 PetriNetUnfolder]: 29713/67166 cut-off events. [2022-12-13 12:35:22,667 INFO L131 PetriNetUnfolder]: For 10665/10943 co-relation queries the response was YES. [2022-12-13 12:35:22,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134545 conditions, 67166 events. 29713/67166 cut-off events. For 10665/10943 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 569550 event pairs, 24841 based on Foata normal form. 6/61434 useless extension candidates. Maximal degree in co-relation 134528. Up to 56574 conditions per place. [2022-12-13 12:35:22,969 INFO L137 encePairwiseOnDemand]: 1353/1453 looper letters, 523 selfloop transitions, 105 changer transitions 0/741 dead transitions. [2022-12-13 12:35:22,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 741 transitions, 3387 flow [2022-12-13 12:35:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:35:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:35:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2429 transitions. [2022-12-13 12:35:22,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5572378986005965 [2022-12-13 12:35:22,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2429 transitions. [2022-12-13 12:35:22,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2429 transitions. [2022-12-13 12:35:22,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:22,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2429 transitions. [2022-12-13 12:35:22,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 809.6666666666666) internal successors, (2429), 3 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:22,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:22,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:22,980 INFO L175 Difference]: Start difference. First operand has 463 places, 569 transitions, 1734 flow. Second operand 3 states and 2429 transitions. [2022-12-13 12:35:22,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 741 transitions, 3387 flow [2022-12-13 12:35:22,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 741 transitions, 3387 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:35:22,998 INFO L231 Difference]: Finished difference. Result has 466 places, 668 transitions, 2491 flow [2022-12-13 12:35:22,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2491, PETRI_PLACES=466, PETRI_TRANSITIONS=668} [2022-12-13 12:35:22,999 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 17 predicate places. [2022-12-13 12:35:22,999 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 668 transitions, 2491 flow [2022-12-13 12:35:23,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 643.6666666666666) internal successors, (1931), 3 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:23,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:23,000 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:23,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 12:35:23,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:35:23,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash -685882929, now seen corresponding path program 1 times [2022-12-13 12:35:23,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:35:23,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234918444] [2022-12-13 12:35:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:23,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:35:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:35:23,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:35:23,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234918444] [2022-12-13 12:35:23,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234918444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:35:23,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:35:23,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:35:23,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939336180] [2022-12-13 12:35:23,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:35:23,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:35:23,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:35:23,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:35:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:35:23,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 1453 [2022-12-13 12:35:23,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 668 transitions, 2491 flow. Second operand has 3 states, 3 states have (on average 643.0) internal successors, (1929), 3 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:23,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:23,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 1453 [2022-12-13 12:35:23,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:33,729 INFO L130 PetriNetUnfolder]: 29959/67649 cut-off events. [2022-12-13 12:35:33,730 INFO L131 PetriNetUnfolder]: For 24187/24538 co-relation queries the response was YES. [2022-12-13 12:35:33,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152290 conditions, 67649 events. 29959/67649 cut-off events. For 24187/24538 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 573976 event pairs, 24749 based on Foata normal form. 2/61871 useless extension candidates. Maximal degree in co-relation 152271. Up to 56978 conditions per place. [2022-12-13 12:35:34,056 INFO L137 encePairwiseOnDemand]: 1359/1453 looper letters, 618 selfloop transitions, 101 changer transitions 0/832 dead transitions. [2022-12-13 12:35:34,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 832 transitions, 4311 flow [2022-12-13 12:35:34,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:35:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:35:34,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2418 transitions. [2022-12-13 12:35:34,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5547143840330351 [2022-12-13 12:35:34,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2418 transitions. [2022-12-13 12:35:34,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2418 transitions. [2022-12-13 12:35:34,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:34,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2418 transitions. [2022-12-13 12:35:34,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 806.0) internal successors, (2418), 3 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:34,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:34,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:34,068 INFO L175 Difference]: Start difference. First operand has 466 places, 668 transitions, 2491 flow. Second operand 3 states and 2418 transitions. [2022-12-13 12:35:34,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 832 transitions, 4311 flow [2022-12-13 12:35:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 832 transitions, 4170 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-12-13 12:35:34,168 INFO L231 Difference]: Finished difference. Result has 468 places, 761 transitions, 3075 flow [2022-12-13 12:35:34,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3075, PETRI_PLACES=468, PETRI_TRANSITIONS=761} [2022-12-13 12:35:34,170 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 19 predicate places. [2022-12-13 12:35:34,170 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 761 transitions, 3075 flow [2022-12-13 12:35:34,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 643.0) internal successors, (1929), 3 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:34,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:34,170 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:34,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 12:35:34,170 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting worker_fnErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:35:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:34,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1653909345, now seen corresponding path program 1 times [2022-12-13 12:35:34,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:35:34,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609146665] [2022-12-13 12:35:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:34,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:35:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:34,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:35:34,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:35:34,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609146665] [2022-12-13 12:35:34,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609146665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:35:34,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:35:34,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 12:35:34,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489546033] [2022-12-13 12:35:34,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:35:34,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:35:34,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:35:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:35:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:35:35,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1453 [2022-12-13 12:35:35,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 761 transitions, 3075 flow. Second operand has 7 states, 7 states have (on average 634.4285714285714) internal successors, (4441), 7 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:35,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:35,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1453 [2022-12-13 12:35:35,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:35:48,198 INFO L130 PetriNetUnfolder]: 29963/67606 cut-off events. [2022-12-13 12:35:48,198 INFO L131 PetriNetUnfolder]: For 34935/35314 co-relation queries the response was YES. [2022-12-13 12:35:48,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168469 conditions, 67606 events. 29963/67606 cut-off events. For 34935/35314 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 593351 event pairs, 1280 based on Foata normal form. 30/61774 useless extension candidates. Maximal degree in co-relation 168449. Up to 56131 conditions per place. [2022-12-13 12:35:48,486 INFO L137 encePairwiseOnDemand]: 1362/1453 looper letters, 955 selfloop transitions, 109 changer transitions 4/1181 dead transitions. [2022-12-13 12:35:48,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1181 transitions, 6595 flow [2022-12-13 12:35:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:35:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:35:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5894 transitions. [2022-12-13 12:35:48,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5070543702684102 [2022-12-13 12:35:48,494 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5894 transitions. [2022-12-13 12:35:48,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5894 transitions. [2022-12-13 12:35:48,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:35:48,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5894 transitions. [2022-12-13 12:35:48,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 736.75) internal successors, (5894), 8 states have internal predecessors, (5894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:48,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1453.0) internal successors, (13077), 9 states have internal predecessors, (13077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:48,510 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1453.0) internal successors, (13077), 9 states have internal predecessors, (13077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:48,510 INFO L175 Difference]: Start difference. First operand has 468 places, 761 transitions, 3075 flow. Second operand 8 states and 5894 transitions. [2022-12-13 12:35:48,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 1181 transitions, 6595 flow [2022-12-13 12:35:48,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1181 transitions, 6461 flow, removed 16 selfloop flow, removed 1 redundant places. [2022-12-13 12:35:48,565 INFO L231 Difference]: Finished difference. Result has 475 places, 772 transitions, 3341 flow [2022-12-13 12:35:48,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=2942, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3341, PETRI_PLACES=475, PETRI_TRANSITIONS=772} [2022-12-13 12:35:48,566 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 26 predicate places. [2022-12-13 12:35:48,566 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 772 transitions, 3341 flow [2022-12-13 12:35:48,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 634.4285714285714) internal successors, (4441), 7 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:48,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:35:48,567 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:35:48,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 12:35:48,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:35:48,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:35:48,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1565691553, now seen corresponding path program 1 times [2022-12-13 12:35:48,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:35:48,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008036442] [2022-12-13 12:35:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:48,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:35:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:35:48,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:35:48,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008036442] [2022-12-13 12:35:48,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008036442] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:35:48,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633017624] [2022-12-13 12:35:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:35:48,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:35:48,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:35:48,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:35:48,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:35:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:35:48,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 12:35:48,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:35:48,971 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 12:35:48,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-13 12:35:49,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:35:49,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 12:35:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:35:49,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:35:49,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633017624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:35:49,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:35:49,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-12-13 12:35:49,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425645477] [2022-12-13 12:35:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:35:49,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 12:35:49,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:35:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 12:35:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:35:50,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 634 out of 1453 [2022-12-13 12:35:50,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 772 transitions, 3341 flow. Second operand has 8 states, 8 states have (on average 636.125) internal successors, (5089), 8 states have internal predecessors, (5089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:35:50,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:35:50,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 634 of 1453 [2022-12-13 12:35:50,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:02,650 INFO L130 PetriNetUnfolder]: 29978/66496 cut-off events. [2022-12-13 12:36:02,650 INFO L131 PetriNetUnfolder]: For 37881/38362 co-relation queries the response was YES. [2022-12-13 12:36:02,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169295 conditions, 66496 events. 29978/66496 cut-off events. For 37881/38362 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 580378 event pairs, 1028 based on Foata normal form. 18/61225 useless extension candidates. Maximal degree in co-relation 169274. Up to 56470 conditions per place. [2022-12-13 12:36:02,941 INFO L137 encePairwiseOnDemand]: 1367/1453 looper letters, 1131 selfloop transitions, 103 changer transitions 8/1355 dead transitions. [2022-12-13 12:36:02,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1355 transitions, 7775 flow [2022-12-13 12:36:02,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 12:36:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 12:36:02,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 6069 transitions. [2022-12-13 12:36:02,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5221094287680661 [2022-12-13 12:36:02,949 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 6069 transitions. [2022-12-13 12:36:02,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 6069 transitions. [2022-12-13 12:36:02,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:02,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 6069 transitions. [2022-12-13 12:36:02,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 758.625) internal successors, (6069), 8 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:02,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1453.0) internal successors, (13077), 9 states have internal predecessors, (13077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:02,964 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1453.0) internal successors, (13077), 9 states have internal predecessors, (13077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:02,964 INFO L175 Difference]: Start difference. First operand has 475 places, 772 transitions, 3341 flow. Second operand 8 states and 6069 transitions. [2022-12-13 12:36:02,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1355 transitions, 7775 flow [2022-12-13 12:36:03,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1355 transitions, 7772 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:36:03,018 INFO L231 Difference]: Finished difference. Result has 482 places, 781 transitions, 3704 flow [2022-12-13 12:36:03,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3704, PETRI_PLACES=482, PETRI_TRANSITIONS=781} [2022-12-13 12:36:03,019 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 33 predicate places. [2022-12-13 12:36:03,019 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 781 transitions, 3704 flow [2022-12-13 12:36:03,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 636.125) internal successors, (5089), 8 states have internal predecessors, (5089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:03,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:03,020 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:03,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:36:03,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:03,221 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting worker_fnErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:36:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:03,222 INFO L85 PathProgramCache]: Analyzing trace with hash 862265345, now seen corresponding path program 1 times [2022-12-13 12:36:03,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:03,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049965997] [2022-12-13 12:36:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:36:03,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:03,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049965997] [2022-12-13 12:36:03,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049965997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:03,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:03,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:36:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68441561] [2022-12-13 12:36:03,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:03,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:36:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:03,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:36:03,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:36:03,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 801 out of 1453 [2022-12-13 12:36:03,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 781 transitions, 3704 flow. Second operand has 3 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:03,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:03,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 801 of 1453 [2022-12-13 12:36:03,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:08,946 INFO L130 PetriNetUnfolder]: 9282/29593 cut-off events. [2022-12-13 12:36:08,946 INFO L131 PetriNetUnfolder]: For 23019/23512 co-relation queries the response was YES. [2022-12-13 12:36:09,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65492 conditions, 29593 events. 9282/29593 cut-off events. For 23019/23512 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 288818 event pairs, 5909 based on Foata normal form. 85/26529 useless extension candidates. Maximal degree in co-relation 65470. Up to 16158 conditions per place. [2022-12-13 12:36:09,072 INFO L137 encePairwiseOnDemand]: 1436/1453 looper letters, 409 selfloop transitions, 18 changer transitions 0/872 dead transitions. [2022-12-13 12:36:09,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 872 transitions, 4840 flow [2022-12-13 12:36:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:36:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:36:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2671 transitions. [2022-12-13 12:36:09,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6127552190869465 [2022-12-13 12:36:09,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2671 transitions. [2022-12-13 12:36:09,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2671 transitions. [2022-12-13 12:36:09,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:09,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2671 transitions. [2022-12-13 12:36:09,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 890.3333333333334) internal successors, (2671), 3 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:09,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:09,081 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:09,081 INFO L175 Difference]: Start difference. First operand has 482 places, 781 transitions, 3704 flow. Second operand 3 states and 2671 transitions. [2022-12-13 12:36:09,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 872 transitions, 4840 flow [2022-12-13 12:36:09,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 872 transitions, 4836 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 12:36:09,116 INFO L231 Difference]: Finished difference. Result has 485 places, 797 transitions, 3912 flow [2022-12-13 12:36:09,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=3700, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3912, PETRI_PLACES=485, PETRI_TRANSITIONS=797} [2022-12-13 12:36:09,117 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 36 predicate places. [2022-12-13 12:36:09,117 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 797 transitions, 3912 flow [2022-12-13 12:36:09,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:09,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:09,117 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:09,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 12:36:09,117 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:36:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:09,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1949877516, now seen corresponding path program 1 times [2022-12-13 12:36:09,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:09,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153044505] [2022-12-13 12:36:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:09,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:36:09,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:09,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153044505] [2022-12-13 12:36:09,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153044505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:09,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:09,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:36:09,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631734780] [2022-12-13 12:36:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:09,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:36:09,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:09,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:36:09,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:36:09,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 800 out of 1453 [2022-12-13 12:36:09,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 797 transitions, 3912 flow. Second operand has 3 states, 3 states have (on average 804.6666666666666) internal successors, (2414), 3 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:09,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:09,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 800 of 1453 [2022-12-13 12:36:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:14,982 INFO L130 PetriNetUnfolder]: 9784/30987 cut-off events. [2022-12-13 12:36:14,983 INFO L131 PetriNetUnfolder]: For 28840/29469 co-relation queries the response was YES. [2022-12-13 12:36:15,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70399 conditions, 30987 events. 9784/30987 cut-off events. For 28840/29469 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 303360 event pairs, 5823 based on Foata normal form. 147/27718 useless extension candidates. Maximal degree in co-relation 70375. Up to 16710 conditions per place. [2022-12-13 12:36:15,126 INFO L137 encePairwiseOnDemand]: 1435/1453 looper letters, 427 selfloop transitions, 19 changer transitions 0/890 dead transitions. [2022-12-13 12:36:15,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 890 transitions, 5091 flow [2022-12-13 12:36:15,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:36:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:36:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2669 transitions. [2022-12-13 12:36:15,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6122963982564809 [2022-12-13 12:36:15,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2669 transitions. [2022-12-13 12:36:15,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2669 transitions. [2022-12-13 12:36:15,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:15,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2669 transitions. [2022-12-13 12:36:15,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 889.6666666666666) internal successors, (2669), 3 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:15,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:15,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:15,135 INFO L175 Difference]: Start difference. First operand has 485 places, 797 transitions, 3912 flow. Second operand 3 states and 2669 transitions. [2022-12-13 12:36:15,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 890 transitions, 5091 flow [2022-12-13 12:36:15,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 890 transitions, 5023 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-12-13 12:36:15,179 INFO L231 Difference]: Finished difference. Result has 487 places, 814 transitions, 4066 flow [2022-12-13 12:36:15,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=778, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4066, PETRI_PLACES=487, PETRI_TRANSITIONS=814} [2022-12-13 12:36:15,180 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 38 predicate places. [2022-12-13 12:36:15,180 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 814 transitions, 4066 flow [2022-12-13 12:36:15,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 804.6666666666666) internal successors, (2414), 3 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:15,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:15,180 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 12:36:15,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:36:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1293427115, now seen corresponding path program 1 times [2022-12-13 12:36:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:15,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207330309] [2022-12-13 12:36:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:36:15,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:15,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207330309] [2022-12-13 12:36:15,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207330309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:36:15,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:36:15,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 12:36:15,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468110722] [2022-12-13 12:36:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:36:15,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 12:36:15,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 12:36:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 12:36:19,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 1453 [2022-12-13 12:36:19,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 814 transitions, 4066 flow. Second operand has 10 states, 10 states have (on average 794.6) internal successors, (7946), 10 states have internal predecessors, (7946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:19,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:19,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 1453 [2022-12-13 12:36:19,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:36:27,329 INFO L130 PetriNetUnfolder]: 11284/36595 cut-off events. [2022-12-13 12:36:27,330 INFO L131 PetriNetUnfolder]: For 38455/39340 co-relation queries the response was YES. [2022-12-13 12:36:27,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85741 conditions, 36595 events. 11284/36595 cut-off events. For 38455/39340 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 375032 event pairs, 5073 based on Foata normal form. 307/33183 useless extension candidates. Maximal degree in co-relation 85716. Up to 16027 conditions per place. [2022-12-13 12:36:27,514 INFO L137 encePairwiseOnDemand]: 1431/1453 looper letters, 783 selfloop transitions, 112 changer transitions 4/1336 dead transitions. [2022-12-13 12:36:27,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 1336 transitions, 7484 flow [2022-12-13 12:36:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 12:36:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 12:36:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 7844 transitions. [2022-12-13 12:36:27,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5998317656954959 [2022-12-13 12:36:27,523 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 7844 transitions. [2022-12-13 12:36:27,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 7844 transitions. [2022-12-13 12:36:27,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:36:27,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 7844 transitions. [2022-12-13 12:36:27,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 871.5555555555555) internal successors, (7844), 9 states have internal predecessors, (7844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:27,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1453.0) internal successors, (14530), 10 states have internal predecessors, (14530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:27,540 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1453.0) internal successors, (14530), 10 states have internal predecessors, (14530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:27,540 INFO L175 Difference]: Start difference. First operand has 487 places, 814 transitions, 4066 flow. Second operand 9 states and 7844 transitions. [2022-12-13 12:36:27,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 1336 transitions, 7484 flow [2022-12-13 12:36:27,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 1336 transitions, 7372 flow, removed 24 selfloop flow, removed 2 redundant places. [2022-12-13 12:36:27,611 INFO L231 Difference]: Finished difference. Result has 498 places, 858 transitions, 4838 flow [2022-12-13 12:36:27,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=4002, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=814, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=705, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4838, PETRI_PLACES=498, PETRI_TRANSITIONS=858} [2022-12-13 12:36:27,611 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 49 predicate places. [2022-12-13 12:36:27,611 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 858 transitions, 4838 flow [2022-12-13 12:36:27,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 794.6) internal successors, (7946), 10 states have internal predecessors, (7946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:27,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:36:27,612 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:36:27,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 12:36:27,612 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting worker_fnErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:36:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:36:27,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1994586598, now seen corresponding path program 1 times [2022-12-13 12:36:27,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:36:27,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543218907] [2022-12-13 12:36:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:36:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:36:27,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:36:27,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543218907] [2022-12-13 12:36:27,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543218907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:36:27,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512657932] [2022-12-13 12:36:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:36:27,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:36:27,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:36:27,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:36:27,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:36:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:36:28,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 12:36:28,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:36:28,175 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-13 12:36:28,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 12:36:28,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:36:28,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:36:28,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:36:28,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-12-13 12:36:28,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:36:28,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-12-13 12:36:28,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-12-13 12:36:28,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:36:28,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:36:28,433 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 11 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0))) is different from false [2022-12-13 12:36:28,453 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 11 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (select |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0))))) is different from false [2022-12-13 12:36:28,473 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) (.cse2 (+ 11 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (store (select |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1 0) .cse2 0)))) (and (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse2) 0))))) is different from false [2022-12-13 12:36:28,493 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) (.cse3 (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) (.cse2 (+ 11 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (store (store (select |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1 0) .cse3 0) .cse2 0)))) (and (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1757 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1757) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse3) 0))))) is different from false [2022-12-13 12:36:28,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:36:28,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 53 [2022-12-13 12:36:28,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:36:28,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 36 [2022-12-13 12:36:28,527 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-12-13 12:36:28,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2022-12-13 12:36:28,533 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-12-13 12:36:28,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2022-12-13 12:36:28,538 INFO L321 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-12-13 12:36:28,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 1 [2022-12-13 12:36:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:36:28,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512657932] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:36:28,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:36:28,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2022-12-13 12:36:28,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946343411] [2022-12-13 12:36:28,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:36:28,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 12:36:28,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:36:28,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 12:36:28,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=268, Unknown=4, NotChecked=148, Total=506 [2022-12-13 12:36:29,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 1453 [2022-12-13 12:36:29,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 858 transitions, 4838 flow. Second operand has 23 states, 23 states have (on average 469.0869565217391) internal successors, (10789), 23 states have internal predecessors, (10789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:36:29,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:36:29,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 1453 [2022-12-13 12:36:29,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:37:28,982 INFO L130 PetriNetUnfolder]: 122307/243551 cut-off events. [2022-12-13 12:37:28,982 INFO L131 PetriNetUnfolder]: For 210506/210512 co-relation queries the response was YES. [2022-12-13 12:37:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664452 conditions, 243551 events. 122307/243551 cut-off events. For 210506/210512 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 2349287 event pairs, 31363 based on Foata normal form. 45/194570 useless extension candidates. Maximal degree in co-relation 664422. Up to 97994 conditions per place. [2022-12-13 12:37:30,564 INFO L137 encePairwiseOnDemand]: 1228/1453 looper letters, 3040 selfloop transitions, 924 changer transitions 0/3988 dead transitions. [2022-12-13 12:37:30,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 3988 transitions, 25705 flow [2022-12-13 12:37:30,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 12:37:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 12:37:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12383 transitions. [2022-12-13 12:37:30,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42611837577426015 [2022-12-13 12:37:30,579 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12383 transitions. [2022-12-13 12:37:30,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12383 transitions. [2022-12-13 12:37:30,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:37:30,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12383 transitions. [2022-12-13 12:37:30,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 619.15) internal successors, (12383), 20 states have internal predecessors, (12383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:30,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1453.0) internal successors, (30513), 21 states have internal predecessors, (30513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:30,615 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1453.0) internal successors, (30513), 21 states have internal predecessors, (30513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:30,615 INFO L175 Difference]: Start difference. First operand has 498 places, 858 transitions, 4838 flow. Second operand 20 states and 12383 transitions. [2022-12-13 12:37:30,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 3988 transitions, 25705 flow [2022-12-13 12:37:30,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 3988 transitions, 25680 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 12:37:30,968 INFO L231 Difference]: Finished difference. Result has 526 places, 1733 transitions, 13573 flow [2022-12-13 12:37:30,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=858, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=13573, PETRI_PLACES=526, PETRI_TRANSITIONS=1733} [2022-12-13 12:37:30,969 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 77 predicate places. [2022-12-13 12:37:30,969 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 1733 transitions, 13573 flow [2022-12-13 12:37:30,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 469.0869565217391) internal successors, (10789), 23 states have internal predecessors, (10789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:30,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:37:30,971 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:37:30,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 12:37:31,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:37:31,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting worker_fnErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:37:31,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:37:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1657316270, now seen corresponding path program 2 times [2022-12-13 12:37:31,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:37:31,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036265250] [2022-12-13 12:37:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:37:31,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:37:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:37:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:37:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:37:31,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036265250] [2022-12-13 12:37:31,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036265250] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:37:31,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993267856] [2022-12-13 12:37:31,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:37:31,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:37:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:37:31,563 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:37:31,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:37:32,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:37:32,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:37:32,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 12:37:32,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:37:32,079 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 12:37:32,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2022-12-13 12:37:32,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:37:32,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:37:32,261 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:37:32,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2022-12-13 12:37:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:37:32,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-12-13 12:37:32,323 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:37:32,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-12-13 12:37:32,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:37:32,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:37:32,359 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0))) is different from false [2022-12-13 12:37:32,370 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (select |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1 0)))) (and (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1) 0))))) is different from false [2022-12-13 12:37:32,382 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) (.cse1 (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|))) (let ((.cse0 (store |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (store (select |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse2 0) .cse1 0)))) (and (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse1) 0)) (forall ((v_ArrVal_1992 (Array Int Int))) (= (select (select (store .cse0 |c_~#pre~0.base| v_ArrVal_1992) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse2) 0))))) is different from false [2022-12-13 12:37:32,392 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:37:32,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 43 [2022-12-13 12:37:32,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:37:32,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 32 [2022-12-13 12:37:32,403 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 12:37:32,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2022-12-13 12:37:32,408 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-12-13 12:37:32,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2022-12-13 12:37:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:37:32,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993267856] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:37:32,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:37:32,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2022-12-13 12:37:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048673764] [2022-12-13 12:37:32,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:37:32,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 12:37:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:37:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 12:37:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=384, Unknown=3, NotChecked=126, Total=600 [2022-12-13 12:37:32,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 468 out of 1453 [2022-12-13 12:37:32,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 1733 transitions, 13573 flow. Second operand has 25 states, 25 states have (on average 470.32) internal successors, (11758), 25 states have internal predecessors, (11758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:37:32,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:37:32,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 468 of 1453 [2022-12-13 12:37:32,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:39:01,096 INFO L130 PetriNetUnfolder]: 122267/243783 cut-off events. [2022-12-13 12:39:01,096 INFO L131 PetriNetUnfolder]: For 837476/837528 co-relation queries the response was YES. [2022-12-13 12:39:02,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042002 conditions, 243783 events. 122267/243783 cut-off events. For 837476/837528 co-relation queries the response was YES. Maximal size of possible extension queue 1343. Compared 2321804 event pairs, 69620 based on Foata normal form. 85/194822 useless extension candidates. Maximal degree in co-relation 1041962. Up to 194200 conditions per place. [2022-12-13 12:39:03,234 INFO L137 encePairwiseOnDemand]: 1228/1453 looper letters, 2574 selfloop transitions, 475 changer transitions 4/3077 dead transitions. [2022-12-13 12:39:03,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 3077 transitions, 31027 flow [2022-12-13 12:39:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 12:39:03,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 12:39:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 9485 transitions. [2022-12-13 12:39:03,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4079920853406745 [2022-12-13 12:39:03,245 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 9485 transitions. [2022-12-13 12:39:03,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 9485 transitions. [2022-12-13 12:39:03,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:39:03,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 9485 transitions. [2022-12-13 12:39:03,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 592.8125) internal successors, (9485), 16 states have internal predecessors, (9485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:03,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1453.0) internal successors, (24701), 17 states have internal predecessors, (24701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:03,270 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1453.0) internal successors, (24701), 17 states have internal predecessors, (24701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:03,270 INFO L175 Difference]: Start difference. First operand has 526 places, 1733 transitions, 13573 flow. Second operand 16 states and 9485 transitions. [2022-12-13 12:39:03,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 3077 transitions, 31027 flow [2022-12-13 12:39:05,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 3077 transitions, 30494 flow, removed 262 selfloop flow, removed 4 redundant places. [2022-12-13 12:39:05,837 INFO L231 Difference]: Finished difference. Result has 539 places, 1747 transitions, 14348 flow [2022-12-13 12:39:05,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=13046, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=462, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14348, PETRI_PLACES=539, PETRI_TRANSITIONS=1747} [2022-12-13 12:39:05,839 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 90 predicate places. [2022-12-13 12:39:05,839 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 1747 transitions, 14348 flow [2022-12-13 12:39:05,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 470.32) internal successors, (11758), 25 states have internal predecessors, (11758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:05,840 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:39:05,840 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:39:05,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:39:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:39:06,042 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting worker_fnErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:39:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:06,043 INFO L85 PathProgramCache]: Analyzing trace with hash 495322031, now seen corresponding path program 1 times [2022-12-13 12:39:06,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:06,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834289457] [2022-12-13 12:39:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:39:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:06,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834289457] [2022-12-13 12:39:06,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834289457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:06,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:06,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:39:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045095064] [2022-12-13 12:39:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:06,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:39:06,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:39:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:39:06,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 850 out of 1453 [2022-12-13 12:39:06,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 1747 transitions, 14348 flow. Second operand has 3 states, 3 states have (on average 853.3333333333334) internal successors, (2560), 3 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:06,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:39:06,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 850 of 1453 [2022-12-13 12:39:06,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:39:28,707 INFO L130 PetriNetUnfolder]: 23712/78876 cut-off events. [2022-12-13 12:39:28,707 INFO L131 PetriNetUnfolder]: For 175229/241465 co-relation queries the response was YES. [2022-12-13 12:39:29,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291166 conditions, 78876 events. 23712/78876 cut-off events. For 175229/241465 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 937492 event pairs, 12225 based on Foata normal form. 1209/71887 useless extension candidates. Maximal degree in co-relation 291125. Up to 35432 conditions per place. [2022-12-13 12:39:29,330 INFO L137 encePairwiseOnDemand]: 1450/1453 looper letters, 705 selfloop transitions, 7 changer transitions 0/1864 dead transitions. [2022-12-13 12:39:29,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 1864 transitions, 16895 flow [2022-12-13 12:39:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:39:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:39:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2793 transitions. [2022-12-13 12:39:29,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6407432897453544 [2022-12-13 12:39:29,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2793 transitions. [2022-12-13 12:39:29,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2793 transitions. [2022-12-13 12:39:29,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:39:29,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2793 transitions. [2022-12-13 12:39:29,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 931.0) internal successors, (2793), 3 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:29,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:29,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:29,339 INFO L175 Difference]: Start difference. First operand has 539 places, 1747 transitions, 14348 flow. Second operand 3 states and 2793 transitions. [2022-12-13 12:39:29,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 1864 transitions, 16895 flow [2022-12-13 12:39:30,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 1864 transitions, 16654 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-13 12:39:30,537 INFO L231 Difference]: Finished difference. Result has 537 places, 1749 transitions, 14142 flow [2022-12-13 12:39:30,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=14107, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1740, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=14142, PETRI_PLACES=537, PETRI_TRANSITIONS=1749} [2022-12-13 12:39:30,538 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 88 predicate places. [2022-12-13 12:39:30,538 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 1749 transitions, 14142 flow [2022-12-13 12:39:30,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 853.3333333333334) internal successors, (2560), 3 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:30,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:39:30,539 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:39:30,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 12:39:30,539 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting worker_fnErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:39:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -430578277, now seen corresponding path program 1 times [2022-12-13 12:39:30,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:30,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513379809] [2022-12-13 12:39:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 12:39:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:30,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513379809] [2022-12-13 12:39:30,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513379809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:30,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:30,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:39:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248345768] [2022-12-13 12:39:30,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:39:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:30,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:39:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:39:31,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 801 out of 1453 [2022-12-13 12:39:31,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 1749 transitions, 14142 flow. Second operand has 3 states, 3 states have (on average 805.6666666666666) internal successors, (2417), 3 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:31,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:39:31,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 801 of 1453 [2022-12-13 12:39:31,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:39:56,767 INFO L130 PetriNetUnfolder]: 28067/87684 cut-off events. [2022-12-13 12:39:56,767 INFO L131 PetriNetUnfolder]: For 224103/299004 co-relation queries the response was YES. [2022-12-13 12:39:57,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337191 conditions, 87684 events. 28067/87684 cut-off events. For 224103/299004 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 1024836 event pairs, 15282 based on Foata normal form. 1870/80870 useless extension candidates. Maximal degree in co-relation 337149. Up to 46644 conditions per place. [2022-12-13 12:39:57,490 INFO L137 encePairwiseOnDemand]: 1437/1453 looper letters, 884 selfloop transitions, 56 changer transitions 0/1880 dead transitions. [2022-12-13 12:39:57,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 1880 transitions, 17312 flow [2022-12-13 12:39:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:39:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:39:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2670 transitions. [2022-12-13 12:39:57,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6125258086717137 [2022-12-13 12:39:57,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2670 transitions. [2022-12-13 12:39:57,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2670 transitions. [2022-12-13 12:39:57,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:39:57,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2670 transitions. [2022-12-13 12:39:57,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 890.0) internal successors, (2670), 3 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:57,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:57,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:57,499 INFO L175 Difference]: Start difference. First operand has 537 places, 1749 transitions, 14142 flow. Second operand 3 states and 2670 transitions. [2022-12-13 12:39:57,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 1880 transitions, 17312 flow [2022-12-13 12:39:58,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 1880 transitions, 17304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:39:58,828 INFO L231 Difference]: Finished difference. Result has 539 places, 1801 transitions, 15038 flow [2022-12-13 12:39:58,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=14135, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=15038, PETRI_PLACES=539, PETRI_TRANSITIONS=1801} [2022-12-13 12:39:58,829 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 90 predicate places. [2022-12-13 12:39:58,829 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 1801 transitions, 15038 flow [2022-12-13 12:39:58,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 805.6666666666666) internal successors, (2417), 3 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:58,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:39:58,830 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:39:58,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 12:39:58,830 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:39:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:39:58,830 INFO L85 PathProgramCache]: Analyzing trace with hash 634298386, now seen corresponding path program 1 times [2022-12-13 12:39:58,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:39:58,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626008924] [2022-12-13 12:39:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:39:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:39:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:39:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:39:58,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:39:58,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626008924] [2022-12-13 12:39:58,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626008924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:39:58,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:39:58,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:39:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814848062] [2022-12-13 12:39:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:39:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:39:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:39:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:39:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:39:59,445 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 800 out of 1453 [2022-12-13 12:39:59,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 1801 transitions, 15038 flow. Second operand has 3 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:39:59,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:39:59,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 800 of 1453 [2022-12-13 12:39:59,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:40:25,565 INFO L130 PetriNetUnfolder]: 27731/86809 cut-off events. [2022-12-13 12:40:25,566 INFO L131 PetriNetUnfolder]: For 236977/310037 co-relation queries the response was YES. [2022-12-13 12:40:26,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337622 conditions, 86809 events. 27731/86809 cut-off events. For 236977/310037 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 1014727 event pairs, 15168 based on Foata normal form. 1606/79698 useless extension candidates. Maximal degree in co-relation 337579. Up to 46623 conditions per place. [2022-12-13 12:40:26,276 INFO L137 encePairwiseOnDemand]: 1437/1453 looper letters, 935 selfloop transitions, 50 changer transitions 0/1918 dead transitions. [2022-12-13 12:40:26,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 1918 transitions, 17643 flow [2022-12-13 12:40:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:40:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:40:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2665 transitions. [2022-12-13 12:40:26,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6113787565955494 [2022-12-13 12:40:26,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2665 transitions. [2022-12-13 12:40:26,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2665 transitions. [2022-12-13 12:40:26,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:40:26,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2665 transitions. [2022-12-13 12:40:26,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 888.3333333333334) internal successors, (2665), 3 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:26,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:26,284 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:26,284 INFO L175 Difference]: Start difference. First operand has 539 places, 1801 transitions, 15038 flow. Second operand 3 states and 2665 transitions. [2022-12-13 12:40:26,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 1918 transitions, 17643 flow [2022-12-13 12:40:27,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 1918 transitions, 17557 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-12-13 12:40:27,428 INFO L231 Difference]: Finished difference. Result has 541 places, 1838 transitions, 15581 flow [2022-12-13 12:40:27,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=14937, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=15581, PETRI_PLACES=541, PETRI_TRANSITIONS=1838} [2022-12-13 12:40:27,429 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 92 predicate places. [2022-12-13 12:40:27,429 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 1838 transitions, 15581 flow [2022-12-13 12:40:27,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:27,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:40:27,429 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:40:27,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 12:40:27,429 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:40:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1636028072, now seen corresponding path program 1 times [2022-12-13 12:40:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:27,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595320450] [2022-12-13 12:40:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:27,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 12:40:27,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:27,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595320450] [2022-12-13 12:40:27,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595320450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:40:27,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:40:27,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:40:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248341758] [2022-12-13 12:40:27,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:40:27,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:40:27,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:27,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:40:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:40:27,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 849 out of 1453 [2022-12-13 12:40:27,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 1838 transitions, 15581 flow. Second operand has 3 states, 3 states have (on average 853.0) internal successors, (2559), 3 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:27,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:40:27,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 849 of 1453 [2022-12-13 12:40:27,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:40:54,024 INFO L130 PetriNetUnfolder]: 26578/87599 cut-off events. [2022-12-13 12:40:54,024 INFO L131 PetriNetUnfolder]: For 212541/262323 co-relation queries the response was YES. [2022-12-13 12:40:54,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339520 conditions, 87599 events. 26578/87599 cut-off events. For 212541/262323 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 1047733 event pairs, 13221 based on Foata normal form. 1921/80678 useless extension candidates. Maximal degree in co-relation 339476. Up to 38790 conditions per place. [2022-12-13 12:40:54,825 INFO L137 encePairwiseOnDemand]: 1450/1453 looper letters, 741 selfloop transitions, 13 changer transitions 0/1960 dead transitions. [2022-12-13 12:40:54,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1960 transitions, 17815 flow [2022-12-13 12:40:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:40:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:40:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2786 transitions. [2022-12-13 12:40:54,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6391374168387245 [2022-12-13 12:40:54,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2786 transitions. [2022-12-13 12:40:54,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2786 transitions. [2022-12-13 12:40:54,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:40:54,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2786 transitions. [2022-12-13 12:40:54,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 928.6666666666666) internal successors, (2786), 3 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:54,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:54,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1453.0) internal successors, (5812), 4 states have internal predecessors, (5812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:54,833 INFO L175 Difference]: Start difference. First operand has 541 places, 1838 transitions, 15581 flow. Second operand 3 states and 2786 transitions. [2022-12-13 12:40:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1960 transitions, 17815 flow [2022-12-13 12:40:55,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 1960 transitions, 17716 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-12-13 12:40:55,945 INFO L231 Difference]: Finished difference. Result has 543 places, 1844 transitions, 15619 flow [2022-12-13 12:40:55,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1453, PETRI_DIFFERENCE_MINUEND_FLOW=15505, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=15619, PETRI_PLACES=543, PETRI_TRANSITIONS=1844} [2022-12-13 12:40:55,946 INFO L288 CegarLoopForPetriNet]: 449 programPoint places, 94 predicate places. [2022-12-13 12:40:55,946 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 1844 transitions, 15619 flow [2022-12-13 12:40:55,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 853.0) internal successors, (2559), 3 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:40:55,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:40:55,946 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:40:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 12:40:55,947 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting worker_fnErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 108 more)] === [2022-12-13 12:40:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:40:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2000017199, now seen corresponding path program 1 times [2022-12-13 12:40:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:40:55,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6098453] [2022-12-13 12:40:55,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:55,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:40:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:56,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:40:56,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6098453] [2022-12-13 12:40:56,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6098453] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:40:56,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476789960] [2022-12-13 12:40:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:40:56,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:40:56,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:40:56,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:40:56,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35da70be-f2e8-4001-85a9-111c9ac0da1d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:40:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:40:56,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-13 12:40:56,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:40:56,927 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 12:40:56,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2022-12-13 12:40:56,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:40:57,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 40 [2022-12-13 12:40:57,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-12-13 12:40:57,064 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 12:40:57,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 12:40:57,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-12-13 12:40:57,219 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:40:57,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2022-12-13 12:40:57,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:40:57,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:40:57,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:40:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:57,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:40:57,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:40:57,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 83 [2022-12-13 12:40:57,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:40:57,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 203 treesize of output 203 [2022-12-13 12:40:57,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:40:57,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 134 [2022-12-13 12:40:57,795 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:40:57,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 102 [2022-12-13 12:40:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:40:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476789960] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:40:57,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:40:57,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-12-13 12:40:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753384264] [2022-12-13 12:40:57,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:40:57,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 12:40:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:40:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 12:40:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1141, Unknown=7, NotChecked=0, Total=1260 [2022-12-13 12:41:00,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 12:41:20,046 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 1453 [2022-12-13 12:41:20,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 1844 transitions, 15619 flow. Second operand has 36 states, 36 states have (on average 365.8611111111111) internal successors, (13171), 36 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:41:20,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:41:20,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 1453 [2022-12-13 12:41:20,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand