./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS --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 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- 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-4e7fbc6 [2022-11-23 03:02:06,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:02:06,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:02:07,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:02:07,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:02:07,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:02:07,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:02:07,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:02:07,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:02:07,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:02:07,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:02:07,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:02:07,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:02:07,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:02:07,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:02:07,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:02:07,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:02:07,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:02:07,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:02:07,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:02:07,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:02:07,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:02:07,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:02:07,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:02:07,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:02:07,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:02:07,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:02:07,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:02:07,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:02:07,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:02:07,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:02:07,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:02:07,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:02:07,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:02:07,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:02:07,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:02:07,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:02:07,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:02:07,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:02:07,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:02:07,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:02:07,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-23 03:02:07,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:02:07,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:02:07,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:02:07,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:02:07,128 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:02:07,128 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:02:07,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:02:07,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:02:07,130 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:02:07,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:02:07,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:02:07,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:02:07,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:02:07,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:02:07,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:02:07,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:02:07,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:02:07,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:02:07,157 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 03:02:07,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:02:07,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:02:07,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:02:07,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:02:07,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:02:07,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:02:07,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:02:07,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:02:07,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:02:07,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:02:07,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:02:07,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:02:07,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:02:07,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:02:07,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:02:07,163 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:02:07,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:02:07,164 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_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2022-11-23 03:02:07,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:02:07,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:02:07,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:02:07,516 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:02:07,516 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:02:07,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-11-23 03:02:10,669 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:02:11,016 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:02:11,021 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-11-23 03:02:11,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/data/67caaba0e/f78ca6bd5c21415dacd96de3eab6d55b/FLAG93da5deb8 [2022-11-23 03:02:11,054 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/data/67caaba0e/f78ca6bd5c21415dacd96de3eab6d55b [2022-11-23 03:02:11,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:02:11,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:02:11,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:02:11,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:02:11,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:02:11,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718fd0c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11, skipping insertion in model container [2022-11-23 03:02:11,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:02:11,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:02:11,385 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:02:11,544 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_8a8aba66-6d8d-4a50-98d1-0b69464a426a/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-11-23 03:02:11,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:02:11,559 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:02:11,584 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-23 03:02:11,634 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_8a8aba66-6d8d-4a50-98d1-0b69464a426a/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-11-23 03:02:11,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:02:11,680 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:02:11,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11 WrapperNode [2022-11-23 03:02:11,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:02:11,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:02:11,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:02:11,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:02:11,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,768 INFO L138 Inliner]: procedures = 173, calls = 24, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 188 [2022-11-23 03:02:11,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:02:11,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:02:11,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:02:11,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:02:11,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:02:11,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:02:11,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:02:11,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:02:11,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (1/1) ... [2022-11-23 03:02:11,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:02:11,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:02:11,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:02:11,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a8aba66-6d8d-4a50-98d1-0b69464a426a/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:02:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:02:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-23 03:02:11,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-23 03:02:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:02:11,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:02:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:02:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:02:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:02:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:02:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:02:11,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:02:11,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:02:11,929 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:02:12,148 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:02:12,150 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:02:12,504 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:02:12,910 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:02:12,910 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 03:02:12,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:12 BoogieIcfgContainer [2022-11-23 03:02:12,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:02:12,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:02:12,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:02:12,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:02:12,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:02:11" (1/3) ... [2022-11-23 03:02:12,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46b668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:12, skipping insertion in model container [2022-11-23 03:02:12,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:02:11" (2/3) ... [2022-11-23 03:02:12,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e46b668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:02:12, skipping insertion in model container [2022-11-23 03:02:12,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:02:12" (3/3) ... [2022-11-23 03:02:12,923 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs.i [2022-11-23 03:02:12,932 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:02:12,942 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:02:12,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-23 03:02:12,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:02:13,007 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:02:13,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 117 transitions, 239 flow [2022-11-23 03:02:13,203 INFO L130 PetriNetUnfolder]: 8/176 cut-off events. [2022-11-23 03:02:13,203 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:02:13,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 8/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 460 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 99. Up to 4 conditions per place. [2022-11-23 03:02:13,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 117 transitions, 239 flow [2022-11-23 03:02:13,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 117 transitions, 239 flow [2022-11-23 03:02:13,224 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:02:13,252 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 117 transitions, 239 flow [2022-11-23 03:02:13,266 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 117 transitions, 239 flow [2022-11-23 03:02:13,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 117 transitions, 239 flow [2022-11-23 03:02:13,311 INFO L130 PetriNetUnfolder]: 8/176 cut-off events. [2022-11-23 03:02:13,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:02:13,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 8/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 460 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 99. Up to 4 conditions per place. [2022-11-23 03:02:13,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 4712 [2022-11-23 03:02:23,278 INFO L134 LiptonReduction]: Checked pairs total: 26025 [2022-11-23 03:02:23,280 INFO L136 LiptonReduction]: Total number of compositions: 109 [2022-11-23 03:02:23,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:02:23,317 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;@47c84452, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:02:23,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-23 03:02:23,321 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2022-11-23 03:02:23,321 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:02:23,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:02:23,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 03:02:23,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-23 03:02:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash 21442, now seen corresponding path program 1 times [2022-11-23 03:02:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:02:23,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157294201] [2022-11-23 03:02:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:02:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:02:23,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:02:23,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157294201] [2022-11-23 03:02:23,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157294201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:02:23,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:02:23,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:02:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529142830] [2022-11-23 03:02:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:02:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:02:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:02:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:02:23,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:02:23,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 226 [2022-11-23 03:02:23,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:23,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:02:23,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 226 [2022-11-23 03:02:23,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:02:23,702 INFO L130 PetriNetUnfolder]: 119/381 cut-off events. [2022-11-23 03:02:23,703 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:02:23,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 381 events. 119/381 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1798 event pairs, 96 based on Foata normal form. 13/320 useless extension candidates. Maximal degree in co-relation 591. Up to 249 conditions per place. [2022-11-23 03:02:23,714 INFO L137 encePairwiseOnDemand]: 207/226 looper letters, 24 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2022-11-23 03:02:23,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 137 flow [2022-11-23 03:02:23,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:02:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:02:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 213 transitions. [2022-11-23 03:02:23,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47123893805309736 [2022-11-23 03:02:23,731 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 213 transitions. [2022-11-23 03:02:23,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 213 transitions. [2022-11-23 03:02:23,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:02:23,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 213 transitions. [2022-11-23 03:02:23,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:23,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:23,743 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:23,745 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 127 flow. Second operand 2 states and 213 transitions. [2022-11-23 03:02:23,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 137 flow [2022-11-23 03:02:23,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 137 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:02:23,751 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 89 flow [2022-11-23 03:02:23,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=226, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=89, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2022-11-23 03:02:23,756 INFO L288 CegarLoopForPetriNet]: 61 programPoint places, -17 predicate places. [2022-11-23 03:02:23,757 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 89 flow [2022-11-23 03:02:23,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:23,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:02:23,758 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-11-23 03:02:23,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:02:23,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-23 03:02:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1667681979, now seen corresponding path program 1 times [2022-11-23 03:02:23,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:02:23,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513634240] [2022-11-23 03:02:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:02:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:02:23,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:02:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:02:23,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:02:23,817 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:02:23,819 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-11-23 03:02:23,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-11-23 03:02:23,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-11-23 03:02:23,821 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-11-23 03:02:23,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-11-23 03:02:23,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-11-23 03:02:23,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-11-23 03:02:23,822 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-11-23 03:02:23,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-11-23 03:02:23,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-11-23 03:02:23,823 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-11-23 03:02:23,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-11-23 03:02:23,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-11-23 03:02:23,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-11-23 03:02:23,824 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-11-23 03:02:23,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-11-23 03:02:23,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-11-23 03:02:23,825 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-11-23 03:02:23,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-11-23 03:02:23,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-11-23 03:02:23,826 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-11-23 03:02:23,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-11-23 03:02:23,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-11-23 03:02:23,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-11-23 03:02:23,827 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-11-23 03:02:23,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-11-23 03:02:23,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-11-23 03:02:23,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-11-23 03:02:23,828 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-11-23 03:02:23,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-11-23 03:02:23,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-11-23 03:02:23,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-11-23 03:02:23,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-11-23 03:02:23,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-11-23 03:02:23,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-11-23 03:02:23,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-11-23 03:02:23,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-11-23 03:02:23,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:02:23,831 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 03:02:23,834 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 03:02:23,834 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-23 03:02:23,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:02:23,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 324 flow [2022-11-23 03:02:23,907 INFO L130 PetriNetUnfolder]: 13/276 cut-off events. [2022-11-23 03:02:23,908 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:02:23,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 276 events. 13/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1000 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2022-11-23 03:02:23,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 156 transitions, 324 flow [2022-11-23 03:02:23,914 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 156 transitions, 324 flow [2022-11-23 03:02:23,915 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:02:23,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 156 transitions, 324 flow [2022-11-23 03:02:23,915 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 156 transitions, 324 flow [2022-11-23 03:02:23,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 324 flow [2022-11-23 03:02:23,954 INFO L130 PetriNetUnfolder]: 13/276 cut-off events. [2022-11-23 03:02:23,955 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:02:23,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 276 events. 13/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1000 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2022-11-23 03:02:23,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 12388 [2022-11-23 03:02:59,736 INFO L134 LiptonReduction]: Checked pairs total: 73947 [2022-11-23 03:02:59,736 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-11-23 03:02:59,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:02:59,739 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;@47c84452, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:02:59,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-23 03:02:59,741 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-11-23 03:02:59,741 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:02:59,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:02:59,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 03:02:59,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-23 03:02:59,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:02:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash 31877, now seen corresponding path program 1 times [2022-11-23 03:02:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:02:59,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938762283] [2022-11-23 03:02:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:02:59,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:02:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:02:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:02:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:02:59,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938762283] [2022-11-23 03:02:59,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938762283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:02:59,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:02:59,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:02:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326238265] [2022-11-23 03:02:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:02:59,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:02:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:02:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:02:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:02:59,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 289 [2022-11-23 03:02:59,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:02:59,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:02:59,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 289 [2022-11-23 03:02:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:00,524 INFO L130 PetriNetUnfolder]: 2292/4317 cut-off events. [2022-11-23 03:03:00,524 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-11-23 03:03:00,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7871 conditions, 4317 events. 2292/4317 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 29428 event pairs, 1951 based on Foata normal form. 120/3631 useless extension candidates. Maximal degree in co-relation 2477. Up to 3505 conditions per place. [2022-11-23 03:03:00,553 INFO L137 encePairwiseOnDemand]: 260/289 looper letters, 34 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2022-11-23 03:03:00,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 204 flow [2022-11-23 03:03:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:03:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:03:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 279 transitions. [2022-11-23 03:03:00,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4826989619377163 [2022-11-23 03:03:00,560 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 279 transitions. [2022-11-23 03:03:00,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 279 transitions. [2022-11-23 03:03:00,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:00,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 279 transitions. [2022-11-23 03:03:00,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 139.5) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:00,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:00,567 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:00,567 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 194 flow. Second operand 2 states and 279 transitions. [2022-11-23 03:03:00,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 204 flow [2022-11-23 03:03:00,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 62 transitions, 202 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-23 03:03:00,571 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 134 flow [2022-11-23 03:03:00,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2022-11-23 03:03:00,572 INFO L288 CegarLoopForPetriNet]: 91 programPoint places, -26 predicate places. [2022-11-23 03:03:00,572 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 134 flow [2022-11-23 03:03:00,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:00,573 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:00,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:00,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:03:00,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-23 03:03:00,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1746302216, now seen corresponding path program 1 times [2022-11-23 03:03:00,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:00,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668391467] [2022-11-23 03:03:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:00,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:03:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:00,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668391467] [2022-11-23 03:03:00,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668391467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:00,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:00,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:03:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455382734] [2022-11-23 03:03:00,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:00,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:03:00,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:00,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:03:00,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:03:00,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 289 [2022-11-23 03:03:00,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:00,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:00,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 289 [2022-11-23 03:03:00,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:01,789 INFO L130 PetriNetUnfolder]: 3107/5695 cut-off events. [2022-11-23 03:03:01,790 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-23 03:03:01,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10500 conditions, 5695 events. 3107/5695 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 39427 event pairs, 2181 based on Foata normal form. 0/4660 useless extension candidates. Maximal degree in co-relation 10495. Up to 4220 conditions per place. [2022-11-23 03:03:01,824 INFO L137 encePairwiseOnDemand]: 279/289 looper letters, 49 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2022-11-23 03:03:01,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 83 transitions, 292 flow [2022-11-23 03:03:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:03:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:03:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2022-11-23 03:03:01,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3933102652825836 [2022-11-23 03:03:01,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2022-11-23 03:03:01,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2022-11-23 03:03:01,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:01,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2022-11-23 03:03:01,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:01,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:01,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:01,833 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 134 flow. Second operand 3 states and 341 transitions. [2022-11-23 03:03:01,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 83 transitions, 292 flow [2022-11-23 03:03:01,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:03:01,837 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 204 flow [2022-11-23 03:03:01,838 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2022-11-23 03:03:01,840 INFO L288 CegarLoopForPetriNet]: 91 programPoint places, -22 predicate places. [2022-11-23 03:03:01,841 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 204 flow [2022-11-23 03:03:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:01,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:01,842 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:01,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:03:01,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-23 03:03:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1135811509, now seen corresponding path program 1 times [2022-11-23 03:03:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:01,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863144479] [2022-11-23 03:03:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:01,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:03:01,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:01,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863144479] [2022-11-23 03:03:01,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863144479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:01,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:01,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:03:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507901085] [2022-11-23 03:03:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:01,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:03:01,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:01,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:03:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:03:02,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 289 [2022-11-23 03:03:02,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:02,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:02,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 289 [2022-11-23 03:03:02,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:03,552 INFO L130 PetriNetUnfolder]: 5505/10184 cut-off events. [2022-11-23 03:03:03,552 INFO L131 PetriNetUnfolder]: For 3017/3264 co-relation queries the response was YES. [2022-11-23 03:03:03,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21859 conditions, 10184 events. 5505/10184 cut-off events. For 3017/3264 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 76956 event pairs, 2401 based on Foata normal form. 36/8684 useless extension candidates. Maximal degree in co-relation 21852. Up to 5257 conditions per place. [2022-11-23 03:03:03,697 INFO L137 encePairwiseOnDemand]: 274/289 looper letters, 72 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2022-11-23 03:03:03,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 113 transitions, 523 flow [2022-11-23 03:03:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:03:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:03:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2022-11-23 03:03:03,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4140715109573241 [2022-11-23 03:03:03,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2022-11-23 03:03:03,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2022-11-23 03:03:03,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:03,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2022-11-23 03:03:03,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:03,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:03,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:03,725 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 204 flow. Second operand 3 states and 359 transitions. [2022-11-23 03:03:03,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 113 transitions, 523 flow [2022-11-23 03:03:03,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 113 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:03:03,764 INFO L231 Difference]: Finished difference. Result has 71 places, 89 transitions, 374 flow [2022-11-23 03:03:03,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=71, PETRI_TRANSITIONS=89} [2022-11-23 03:03:03,767 INFO L288 CegarLoopForPetriNet]: 91 programPoint places, -20 predicate places. [2022-11-23 03:03:03,767 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 89 transitions, 374 flow [2022-11-23 03:03:03,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:03,767 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:03,767 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:03,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:03:03,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-23 03:03:03,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:03,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1267657052, now seen corresponding path program 1 times [2022-11-23 03:03:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:03,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951018992] [2022-11-23 03:03:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:03:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:03,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951018992] [2022-11-23 03:03:03,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951018992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:03,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:03,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:03:03,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386119622] [2022-11-23 03:03:03,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:03,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:03:03,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:03:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:03:04,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 289 [2022-11-23 03:03:04,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 89 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:04,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:04,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 289 [2022-11-23 03:03:04,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:05,523 INFO L130 PetriNetUnfolder]: 5691/10623 cut-off events. [2022-11-23 03:03:05,523 INFO L131 PetriNetUnfolder]: For 13431/13988 co-relation queries the response was YES. [2022-11-23 03:03:05,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28408 conditions, 10623 events. 5691/10623 cut-off events. For 13431/13988 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 83204 event pairs, 2841 based on Foata normal form. 78/8937 useless extension candidates. Maximal degree in co-relation 28400. Up to 7304 conditions per place. [2022-11-23 03:03:05,663 INFO L137 encePairwiseOnDemand]: 279/289 looper letters, 73 selfloop transitions, 27 changer transitions 0/129 dead transitions. [2022-11-23 03:03:05,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 129 transitions, 765 flow [2022-11-23 03:03:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:03:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:03:05,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2022-11-23 03:03:05,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4013840830449827 [2022-11-23 03:03:05,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2022-11-23 03:03:05,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2022-11-23 03:03:05,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:05,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2022-11-23 03:03:05,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:05,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:05,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 289.0) internal successors, (1156), 4 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:05,673 INFO L175 Difference]: Start difference. First operand has 71 places, 89 transitions, 374 flow. Second operand 3 states and 348 transitions. [2022-11-23 03:03:05,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 129 transitions, 765 flow [2022-11-23 03:03:05,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 129 transitions, 705 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:03:05,697 INFO L231 Difference]: Finished difference. Result has 73 places, 112 transitions, 622 flow [2022-11-23 03:03:05,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=289, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=73, PETRI_TRANSITIONS=112} [2022-11-23 03:03:05,701 INFO L288 CegarLoopForPetriNet]: 91 programPoint places, -18 predicate places. [2022-11-23 03:03:05,701 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 112 transitions, 622 flow [2022-11-23 03:03:05,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:05,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:05,702 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-23 03:03:05,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:03:05,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-23 03:03:05,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1648873634, now seen corresponding path program 1 times [2022-11-23 03:03:05,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:05,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265951658] [2022-11-23 03:03:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:03:05,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:03:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:03:05,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:03:05,747 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:03:05,747 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-11-23 03:03:05,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-11-23 03:03:05,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-11-23 03:03:05,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-11-23 03:03:05,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-11-23 03:03:05,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-11-23 03:03:05,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-11-23 03:03:05,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-11-23 03:03:05,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-11-23 03:03:05,751 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-11-23 03:03:05,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-11-23 03:03:05,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-11-23 03:03:05,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-11-23 03:03:05,752 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-11-23 03:03:05,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-11-23 03:03:05,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-11-23 03:03:05,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-11-23 03:03:05,753 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-11-23 03:03:05,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-11-23 03:03:05,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-11-23 03:03:05,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-11-23 03:03:05,754 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-11-23 03:03:05,755 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-11-23 03:03:05,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-11-23 03:03:05,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-11-23 03:03:05,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-11-23 03:03:05,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-11-23 03:03:05,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-11-23 03:03:05,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-11-23 03:03:05,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-11-23 03:03:05,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-11-23 03:03:05,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-11-23 03:03:05,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-11-23 03:03:05,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-11-23 03:03:05,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-11-23 03:03:05,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-11-23 03:03:05,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-11-23 03:03:05,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-11-23 03:03:05,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-11-23 03:03:05,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-11-23 03:03:05,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-11-23 03:03:05,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-11-23 03:03:05,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-11-23 03:03:05,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-11-23 03:03:05,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-11-23 03:03:05,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-11-23 03:03:05,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-11-23 03:03:05,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-11-23 03:03:05,767 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-11-23 03:03:05,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:03:05,768 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-23 03:03:05,769 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-23 03:03:05,769 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-23 03:03:05,826 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:03:05,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 411 flow [2022-11-23 03:03:05,913 INFO L130 PetriNetUnfolder]: 18/376 cut-off events. [2022-11-23 03:03:05,913 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-23 03:03:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 376 events. 18/376 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1549 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 280. Up to 8 conditions per place. [2022-11-23 03:03:05,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 195 transitions, 411 flow [2022-11-23 03:03:05,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 195 transitions, 411 flow [2022-11-23 03:03:05,921 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:03:05,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 195 transitions, 411 flow [2022-11-23 03:03:05,921 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 195 transitions, 411 flow [2022-11-23 03:03:05,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 411 flow [2022-11-23 03:03:05,987 INFO L130 PetriNetUnfolder]: 18/376 cut-off events. [2022-11-23 03:03:05,987 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-23 03:03:05,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 376 events. 18/376 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1549 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 280. Up to 8 conditions per place. [2022-11-23 03:03:06,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 23028 [2022-11-23 03:03:31,366 INFO L134 LiptonReduction]: Checked pairs total: 148416 [2022-11-23 03:03:31,367 INFO L136 LiptonReduction]: Total number of compositions: 176 [2022-11-23 03:03:31,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:03:31,369 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;@47c84452, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:03:31,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-23 03:03:31,370 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-11-23 03:03:31,371 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:03:31,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:31,371 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-23 03:03:31,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-23 03:03:31,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 44548, now seen corresponding path program 1 times [2022-11-23 03:03:31,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:31,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916308873] [2022-11-23 03:03:31,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:31,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:03:31,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:31,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916308873] [2022-11-23 03:03:31,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916308873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:31,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:31,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:03:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826098548] [2022-11-23 03:03:31,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:31,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:03:31,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:31,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:03:31,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:03:31,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 371 [2022-11-23 03:03:31,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 119 transitions, 259 flow. Second operand has 2 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:31,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:31,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 371 [2022-11-23 03:03:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:37,135 INFO L130 PetriNetUnfolder]: 34769/54415 cut-off events. [2022-11-23 03:03:37,135 INFO L131 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2022-11-23 03:03:37,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101674 conditions, 54415 events. 34769/54415 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 1408. Compared 431957 event pairs, 30169 based on Foata normal form. 1332/47600 useless extension candidates. Maximal degree in co-relation 11850. Up to 46770 conditions per place. [2022-11-23 03:03:37,448 INFO L137 encePairwiseOnDemand]: 333/371 looper letters, 45 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2022-11-23 03:03:37,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 81 transitions, 273 flow [2022-11-23 03:03:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:03:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:03:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 345 transitions. [2022-11-23 03:03:37,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46495956873315364 [2022-11-23 03:03:37,450 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 345 transitions. [2022-11-23 03:03:37,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 345 transitions. [2022-11-23 03:03:37,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:37,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 345 transitions. [2022-11-23 03:03:37,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 172.5) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:37,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:37,454 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:37,455 INFO L175 Difference]: Start difference. First operand has 120 places, 119 transitions, 259 flow. Second operand 2 states and 345 transitions. [2022-11-23 03:03:37,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 81 transitions, 273 flow [2022-11-23 03:03:37,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 81 transitions, 267 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-11-23 03:03:37,461 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 177 flow [2022-11-23 03:03:37,461 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=177, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2022-11-23 03:03:37,463 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, -35 predicate places. [2022-11-23 03:03:37,463 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 177 flow [2022-11-23 03:03:37,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 132.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:37,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:37,464 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:37,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:03:37,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-23 03:03:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash 520831843, now seen corresponding path program 1 times [2022-11-23 03:03:37,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:37,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194521444] [2022-11-23 03:03:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:03:37,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194521444] [2022-11-23 03:03:37,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194521444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:37,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:37,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:03:37,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848244414] [2022-11-23 03:03:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:37,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:03:37,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:37,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:03:37,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:03:37,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 371 [2022-11-23 03:03:37,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:37,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:37,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 371 [2022-11-23 03:03:37,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:03:48,170 INFO L130 PetriNetUnfolder]: 76939/115745 cut-off events. [2022-11-23 03:03:48,170 INFO L131 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2022-11-23 03:03:48,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219605 conditions, 115745 events. 76939/115745 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 2540. Compared 918214 event pairs, 57071 based on Foata normal form. 0/100325 useless extension candidates. Maximal degree in co-relation 219599. Up to 92048 conditions per place. [2022-11-23 03:03:48,772 INFO L137 encePairwiseOnDemand]: 358/371 looper letters, 77 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2022-11-23 03:03:48,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 427 flow [2022-11-23 03:03:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:03:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:03:48,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2022-11-23 03:03:48,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3881401617250674 [2022-11-23 03:03:48,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2022-11-23 03:03:48,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2022-11-23 03:03:48,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:03:48,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2022-11-23 03:03:48,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:48,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:48,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:48,781 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 177 flow. Second operand 3 states and 432 transitions. [2022-11-23 03:03:48,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 427 flow [2022-11-23 03:03:48,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 117 transitions, 427 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:03:48,784 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 271 flow [2022-11-23 03:03:48,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2022-11-23 03:03:48,786 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, -31 predicate places. [2022-11-23 03:03:48,786 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 271 flow [2022-11-23 03:03:48,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:48,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:03:48,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:03:48,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:03:48,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-23 03:03:48,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:03:48,789 INFO L85 PathProgramCache]: Analyzing trace with hash 616695767, now seen corresponding path program 1 times [2022-11-23 03:03:48,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:03:48,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818916051] [2022-11-23 03:03:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:03:48,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:03:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:03:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:03:48,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:03:48,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818916051] [2022-11-23 03:03:48,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818916051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:03:48,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:03:48,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:03:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502095163] [2022-11-23 03:03:48,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:03:48,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:03:48,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:03:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:03:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:03:49,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 371 [2022-11-23 03:03:49,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:03:49,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:03:49,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 371 [2022-11-23 03:03:49,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:04:00,478 INFO L130 PetriNetUnfolder]: 81915/124600 cut-off events. [2022-11-23 03:04:00,478 INFO L131 PetriNetUnfolder]: For 31136/34064 co-relation queries the response was YES. [2022-11-23 03:04:00,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273316 conditions, 124600 events. 81915/124600 cut-off events. For 31136/34064 co-relation queries the response was YES. Maximal size of possible extension queue 2882. Compared 1024847 event pairs, 59848 based on Foata normal form. 291/106519 useless extension candidates. Maximal degree in co-relation 273308. Up to 102501 conditions per place. [2022-11-23 03:04:01,330 INFO L137 encePairwiseOnDemand]: 359/371 looper letters, 89 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2022-11-23 03:04:01,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 635 flow [2022-11-23 03:04:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:04:01,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:04:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2022-11-23 03:04:01,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3926325247079964 [2022-11-23 03:04:01,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2022-11-23 03:04:01,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2022-11-23 03:04:01,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:04:01,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2022-11-23 03:04:01,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:04:01,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:04:01,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 371.0) internal successors, (1484), 4 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:04:01,339 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 271 flow. Second operand 3 states and 437 transitions. [2022-11-23 03:04:01,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 635 flow [2022-11-23 03:04:02,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 138 transitions, 595 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:04:02,582 INFO L231 Difference]: Finished difference. Result has 90 places, 109 transitions, 404 flow [2022-11-23 03:04:02,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=90, PETRI_TRANSITIONS=109} [2022-11-23 03:04:02,583 INFO L288 CegarLoopForPetriNet]: 120 programPoint places, -30 predicate places. [2022-11-23 03:04:02,583 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 109 transitions, 404 flow [2022-11-23 03:04:02,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:04:02,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:04:02,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:04:02,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:04:02,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-23 03:04:02,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:04:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1991732517, now seen corresponding path program 1 times [2022-11-23 03:04:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:04:02,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336037406] [2022-11-23 03:04:02,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:04:02,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:04:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:04:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:04:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:04:02,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336037406] [2022-11-23 03:04:02,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336037406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:04:02,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:04:02,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:04:02,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515320667] [2022-11-23 03:04:02,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:04:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:04:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:04:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:04:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:04:02,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 371 [2022-11-23 03:04:02,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 109 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:04:02,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:04:02,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 371 [2022-11-23 03:04:02,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand