./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b 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_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN --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 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 --- 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-6b4ec56 [2022-11-20 12:47:44,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:47:44,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:47:44,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:47:44,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:47:44,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:47:44,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:47:44,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:47:44,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:47:44,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:47:44,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:47:44,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:47:44,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:47:44,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:47:44,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:47:44,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:47:44,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:47:44,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:47:44,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:47:44,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:47:44,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:47:44,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:47:44,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:47:44,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:47:44,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:47:44,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:47:44,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:47:44,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:47:44,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:47:44,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:47:44,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:47:44,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:47:44,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:47:44,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:47:44,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:47:44,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:47:44,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:47:44,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:47:44,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:47:44,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:47:44,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:47:44,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-20 12:47:44,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:47:44,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:47:44,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:47:44,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:47:44,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:47:44,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:47:44,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:47:44,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:47:44,588 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:47:44,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:47:44,588 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:47:44,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:47:44,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:47:44,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:47:44,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:47:44,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:47:44,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:47:44,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:47:44,590 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 12:47:44,590 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:47:44,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:47:44,591 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:47:44,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:47:44,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:47:44,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:47:44,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:47:44,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:47:44,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:47:44,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:47:44,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:47:44,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:47:44,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:47:44,593 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:47:44,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:47:44,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:47:44,594 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 [2022-11-20 12:47:44,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:47:44,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:47:44,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:47:44,935 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:47:44,936 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:47:44,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/singleton-b.i [2022-11-20 12:47:48,135 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:47:48,458 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:47:48,468 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/sv-benchmarks/c/pthread/singleton-b.i [2022-11-20 12:47:48,483 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/data/4883c1eef/87efae06cff04363af39d179f4351071/FLAGbd8e546cb [2022-11-20 12:47:48,498 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/data/4883c1eef/87efae06cff04363af39d179f4351071 [2022-11-20 12:47:48,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:47:48,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:47:48,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:48,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:47:48,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:47:48,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:48" (1/1) ... [2022-11-20 12:47:48,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e94ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:48, skipping insertion in model container [2022-11-20 12:47:48,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:48" (1/1) ... [2022-11-20 12:47:48,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:47:48,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:47:49,119 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_c7804347-033f-475e-b82e-5c6c3fd4e62d/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-20 12:47:49,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:49,178 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:47:49,214 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_c7804347-033f-475e-b82e-5c6c3fd4e62d/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-20 12:47:49,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:49,298 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:47:49,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49 WrapperNode [2022-11-20 12:47:49,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:49,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:49,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:47:49,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:47:49,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,370 INFO L138 Inliner]: procedures = 323, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-20 12:47:49,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:49,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:47:49,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:47:49,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:47:49,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,403 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:47:49,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:47:49,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:47:49,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:47:49,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (1/1) ... [2022-11-20 12:47:49,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:47:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:49,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:49,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7804347-033f-475e-b82e-5c6c3fd4e62d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:47:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:47:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:47:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:47:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-20 12:47:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-20 12:47:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:47:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:47:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:47:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:47:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:47:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:47:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:47:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:47:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:47:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:47:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:47:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:47:49,506 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:47:49,714 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:47:49,716 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:47:50,186 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:47:50,195 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:47:50,203 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:47:50,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:50 BoogieIcfgContainer [2022-11-20 12:47:50,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:47:50,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:47:50,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:47:50,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:47:50,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:47:48" (1/3) ... [2022-11-20 12:47:50,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ff7612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:50, skipping insertion in model container [2022-11-20 12:47:50,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:49" (2/3) ... [2022-11-20 12:47:50,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ff7612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:50, skipping insertion in model container [2022-11-20 12:47:50,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:50" (3/3) ... [2022-11-20 12:47:50,229 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton-b.i [2022-11-20 12:47:50,238 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:47:50,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:47:50,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-20 12:47:50,255 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:47:50,473 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-20 12:47:50,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 296 transitions, 699 flow [2022-11-20 12:47:50,634 INFO L130 PetriNetUnfolder]: 6/209 cut-off events. [2022-11-20 12:47:50,634 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:47:50,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 209 events. 6/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 191 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-11-20 12:47:50,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 296 transitions, 699 flow [2022-11-20 12:47:50,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 192 transitions, 435 flow [2022-11-20 12:47:50,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:47:50,665 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;@e80e86e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:47:50,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 12:47:50,674 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-20 12:47:50,675 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:47:50,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:47:50,676 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:50,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:47:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1972378663, now seen corresponding path program 1 times [2022-11-20 12:47:50,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:50,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461907635] [2022-11-20 12:47:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:50,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:51,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:51,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461907635] [2022-11-20 12:47:51,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461907635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:51,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:51,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814706661] [2022-11-20 12:47:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:51,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:51,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:51,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 298 [2022-11-20 12:47:51,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 185.66666666666666) internal successors, (1114), 6 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:51,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:47:51,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 298 [2022-11-20 12:47:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:48:14,160 INFO L130 PetriNetUnfolder]: 112378/157146 cut-off events. [2022-11-20 12:48:14,160 INFO L131 PetriNetUnfolder]: For 3073/3124 co-relation queries the response was YES. [2022-11-20 12:48:14,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305993 conditions, 157146 events. 112378/157146 cut-off events. For 3073/3124 co-relation queries the response was YES. Maximal size of possible extension queue 5413. Compared 1190322 event pairs, 55064 based on Foata normal form. 7/118865 useless extension candidates. Maximal degree in co-relation 305937. Up to 95608 conditions per place. [2022-11-20 12:48:15,749 INFO L137 encePairwiseOnDemand]: 288/298 looper letters, 285 selfloop transitions, 21 changer transitions 0/427 dead transitions. [2022-11-20 12:48:15,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 427 transitions, 1700 flow [2022-11-20 12:48:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:48:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:48:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1411 transitions. [2022-11-20 12:48:15,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7891498881431768 [2022-11-20 12:48:15,776 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1411 transitions. [2022-11-20 12:48:15,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1411 transitions. [2022-11-20 12:48:15,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:48:15,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1411 transitions. [2022-11-20 12:48:15,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.16666666666666) internal successors, (1411), 6 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:15,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:15,806 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:15,809 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 435 flow. Second operand 6 states and 1411 transitions. [2022-11-20 12:48:15,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 427 transitions, 1700 flow [2022-11-20 12:48:15,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 427 transitions, 1544 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-20 12:48:15,931 INFO L231 Difference]: Finished difference. Result has 204 places, 212 transitions, 543 flow [2022-11-20 12:48:15,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=204, PETRI_TRANSITIONS=212} [2022-11-20 12:48:15,940 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, -2 predicate places. [2022-11-20 12:48:15,940 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 212 transitions, 543 flow [2022-11-20 12:48:15,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.66666666666666) internal successors, (1114), 6 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:15,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:48:15,942 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:48:15,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:48:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1485775174, now seen corresponding path program 1 times [2022-11-20 12:48:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:15,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89269265] [2022-11-20 12:48:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:15,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:16,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:16,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89269265] [2022-11-20 12:48:16,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89269265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:16,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:16,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:48:16,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128682117] [2022-11-20 12:48:16,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:16,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:48:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:48:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:48:16,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 298 [2022-11-20 12:48:16,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 212 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:16,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:48:16,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 298 [2022-11-20 12:48:16,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:48:18,667 INFO L130 PetriNetUnfolder]: 6129/20532 cut-off events. [2022-11-20 12:48:18,667 INFO L131 PetriNetUnfolder]: For 3008/3696 co-relation queries the response was YES. [2022-11-20 12:48:18,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34420 conditions, 20532 events. 6129/20532 cut-off events. For 3008/3696 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 264154 event pairs, 3044 based on Foata normal form. 0/15801 useless extension candidates. Maximal degree in co-relation 23000. Up to 4210 conditions per place. [2022-11-20 12:48:18,915 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 34 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2022-11-20 12:48:18,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 613 flow [2022-11-20 12:48:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:48:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 12:48:18,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-11-20 12:48:18,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8635346756152126 [2022-11-20 12:48:18,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-11-20 12:48:18,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-11-20 12:48:18,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:48:18,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-11-20 12:48:18,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:18,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:18,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:18,926 INFO L175 Difference]: Start difference. First operand has 204 places, 212 transitions, 543 flow. Second operand 3 states and 772 transitions. [2022-11-20 12:48:18,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 613 flow [2022-11-20 12:48:18,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 613 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:48:19,306 INFO L231 Difference]: Finished difference. Result has 205 places, 211 transitions, 545 flow [2022-11-20 12:48:19,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=205, PETRI_TRANSITIONS=211} [2022-11-20 12:48:19,308 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, -1 predicate places. [2022-11-20 12:48:19,308 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 211 transitions, 545 flow [2022-11-20 12:48:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:19,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:48:19,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:19,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:48:19,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-20 12:48:19,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 172656807, now seen corresponding path program 1 times [2022-11-20 12:48:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:19,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611702817] [2022-11-20 12:48:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:48:19,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:19,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611702817] [2022-11-20 12:48:19,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611702817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:19,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:19,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:48:19,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996222450] [2022-11-20 12:48:19,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:19,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:48:19,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:19,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:48:19,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:48:19,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 298 [2022-11-20 12:48:19,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 211 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:48:19,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:48:19,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 298 [2022-11-20 12:48:19,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand