./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- 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-8393723 [2022-11-18 20:03:43,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:03:43,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:03:43,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:03:43,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:03:43,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:03:43,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:03:43,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:03:43,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:03:43,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:03:43,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:03:43,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:03:43,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:03:43,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:03:43,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:03:43,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:03:43,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:03:43,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:03:43,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:03:43,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:03:43,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:03:43,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:03:43,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:03:43,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:03:43,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:03:43,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:03:43,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:03:43,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:03:43,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:03:43,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:03:43,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:03:43,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:03:43,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:03:43,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:03:43,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:03:43,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:03:43,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:03:43,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:03:43,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:03:43,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:03:43,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:03:43,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:03:43,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:03:43,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:03:43,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:03:43,137 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:03:43,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:03:43,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:03:43,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:03:43,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:03:43,139 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:03:43,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:03:43,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:03:43,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:03:43,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:03:43,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:03:43,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:03:43,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:03:43,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:03:43,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:03:43,142 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:03:43,143 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:03:43,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:03:43,143 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:03:43,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:03:43,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:03:43,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:03:43,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:03:43,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:03:43,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:03:43,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:03:43,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:03:43,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:03:43,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:03:43,147 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:03:43,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:03:43,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:03:43,148 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2022-11-18 20:03:43,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:03:43,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:03:43,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:03:43,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:03:43,533 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:03:43,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/queue.i [2022-11-18 20:03:43,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/data/efab92224/e06d0e92a3e145f7aaf47f56a8474ac2/FLAG632074a24 [2022-11-18 20:03:44,413 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:03:44,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/sv-benchmarks/c/pthread/queue.i [2022-11-18 20:03:44,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/data/efab92224/e06d0e92a3e145f7aaf47f56a8474ac2/FLAG632074a24 [2022-11-18 20:03:44,459 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/data/efab92224/e06d0e92a3e145f7aaf47f56a8474ac2 [2022-11-18 20:03:44,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:03:44,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:03:44,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:03:44,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:03:44,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:03:44,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:44" (1/1) ... [2022-11-18 20:03:44,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54db6c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:44, skipping insertion in model container [2022-11-18 20:03:44,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:44" (1/1) ... [2022-11-18 20:03:44,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:03:44,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:03:45,358 WARN L234 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-18 20:03:45,365 WARN L234 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-18 20:03:45,371 WARN L234 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-18 20:03:45,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:03:45,389 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:03:45,454 WARN L234 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-18 20:03:45,457 WARN L234 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-18 20:03:45,461 WARN L234 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_44639c48-dcb0-4783-b85c-1fbcdb73488c/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-18 20:03:45,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:03:45,522 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:03:45,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45 WrapperNode [2022-11-18 20:03:45,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:03:45,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:03:45,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:03:45,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:03:45,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,641 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 490 [2022-11-18 20:03:45,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:03:45,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:03:45,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:03:45,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:03:45,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,717 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:03:45,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:03:45,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:03:45,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:03:45,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (1/1) ... [2022-11-18 20:03:45,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:03:45,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:45,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:03:45,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44639c48-dcb0-4783-b85c-1fbcdb73488c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:03:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 20:03:45,827 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 20:03:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 20:03:45,827 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 20:03:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:03:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:03:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:03:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:03:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:03:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:03:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:03:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:03:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:03:45,832 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:03:46,123 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:03:46,126 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:03:47,068 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:03:47,090 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:03:47,090 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:03:47,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:47 BoogieIcfgContainer [2022-11-18 20:03:47,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:03:47,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:03:47,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:03:47,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:03:47,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:03:44" (1/3) ... [2022-11-18 20:03:47,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6246f7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:47, skipping insertion in model container [2022-11-18 20:03:47,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:45" (2/3) ... [2022-11-18 20:03:47,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6246f7f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:47, skipping insertion in model container [2022-11-18 20:03:47,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:47" (3/3) ... [2022-11-18 20:03:47,105 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-11-18 20:03:47,115 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:03:47,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:03:47,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-11-18 20:03:47,127 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:03:47,346 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:03:47,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 561 transitions, 1138 flow [2022-11-18 20:03:47,761 INFO L130 PetriNetUnfolder]: 15/559 cut-off events. [2022-11-18 20:03:47,761 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:03:47,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 559 events. 15/559 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 781 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 421. Up to 2 conditions per place. [2022-11-18 20:03:47,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 553 places, 561 transitions, 1138 flow [2022-11-18 20:03:47,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 538 places, 545 transitions, 1099 flow [2022-11-18 20:03:47,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:03:47,821 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;@55050d54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:03:47,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-18 20:03:47,842 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2022-11-18 20:03:47,842 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:03:47,842 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:03:47,843 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:47,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-18 20:03:47,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1076172992, now seen corresponding path program 1 times [2022-11-18 20:03:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:47,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591522599] [2022-11-18 20:03:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:47,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:48,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:48,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591522599] [2022-11-18 20:03:48,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591522599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:48,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:48,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:03:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376306331] [2022-11-18 20:03:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:48,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:48,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:48,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:48,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 533 out of 561 [2022-11-18 20:03:48,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 545 transitions, 1099 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:48,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:03:48,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 533 of 561 [2022-11-18 20:03:48,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:03:48,908 INFO L130 PetriNetUnfolder]: 59/1333 cut-off events. [2022-11-18 20:03:48,909 INFO L131 PetriNetUnfolder]: For 33/34 co-relation queries the response was YES. [2022-11-18 20:03:48,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 1333 events. 59/1333 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 5608 event pairs, 27 based on Foata normal form. 22/1190 useless extension candidates. Maximal degree in co-relation 1149. Up to 79 conditions per place. [2022-11-18 20:03:48,926 INFO L137 encePairwiseOnDemand]: 554/561 looper letters, 15 selfloop transitions, 2 changer transitions 0/538 dead transitions. [2022-11-18 20:03:48,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 538 transitions, 1119 flow [2022-11-18 20:03:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:03:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1621 transitions. [2022-11-18 20:03:48,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9631610219845514 [2022-11-18 20:03:48,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1621 transitions. [2022-11-18 20:03:48,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1621 transitions. [2022-11-18 20:03:48,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:03:48,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1621 transitions. [2022-11-18 20:03:48,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 540.3333333333334) internal successors, (1621), 3 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:48,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:48,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:48,988 INFO L175 Difference]: Start difference. First operand has 538 places, 545 transitions, 1099 flow. Second operand 3 states and 1621 transitions. [2022-11-18 20:03:48,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 538 transitions, 1119 flow [2022-11-18 20:03:48,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 538 transitions, 1114 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:03:49,013 INFO L231 Difference]: Finished difference. Result has 534 places, 538 transitions, 1084 flow [2022-11-18 20:03:49,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1084, PETRI_PLACES=534, PETRI_TRANSITIONS=538} [2022-11-18 20:03:49,024 INFO L288 CegarLoopForPetriNet]: 538 programPoint places, -4 predicate places. [2022-11-18 20:03:49,025 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 538 transitions, 1084 flow [2022-11-18 20:03:49,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:49,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:03:49,027 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:49,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:03:49,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-18 20:03:49,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:49,029 INFO L85 PathProgramCache]: Analyzing trace with hash -472508138, now seen corresponding path program 1 times [2022-11-18 20:03:49,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:49,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488763708] [2022-11-18 20:03:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:49,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488763708] [2022-11-18 20:03:49,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488763708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:49,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:49,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:03:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322509665] [2022-11-18 20:03:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:49,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:49,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:49,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:49,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:49,138 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 533 out of 561 [2022-11-18 20:03:49,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 538 transitions, 1084 flow. Second operand has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:49,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:03:49,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 533 of 561 [2022-11-18 20:03:49,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:03:49,798 INFO L130 PetriNetUnfolder]: 71/1710 cut-off events. [2022-11-18 20:03:49,798 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-18 20:03:49,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 1710 events. 71/1710 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6877 event pairs, 27 based on Foata normal form. 0/1497 useless extension candidates. Maximal degree in co-relation 1762. Up to 85 conditions per place. [2022-11-18 20:03:49,821 INFO L137 encePairwiseOnDemand]: 558/561 looper letters, 15 selfloop transitions, 2 changer transitions 0/537 dead transitions. [2022-11-18 20:03:49,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 537 transitions, 1116 flow [2022-11-18 20:03:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:03:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1617 transitions. [2022-11-18 20:03:49,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2022-11-18 20:03:49,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1617 transitions. [2022-11-18 20:03:49,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1617 transitions. [2022-11-18 20:03:49,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:03:49,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1617 transitions. [2022-11-18 20:03:49,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 539.0) internal successors, (1617), 3 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:49,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:49,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 561.0) internal successors, (2244), 4 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:49,841 INFO L175 Difference]: Start difference. First operand has 534 places, 538 transitions, 1084 flow. Second operand 3 states and 1617 transitions. [2022-11-18 20:03:49,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 537 transitions, 1116 flow [2022-11-18 20:03:49,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 537 transitions, 1112 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:03:49,855 INFO L231 Difference]: Finished difference. Result has 533 places, 537 transitions, 1082 flow [2022-11-18 20:03:49,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=561, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1082, PETRI_PLACES=533, PETRI_TRANSITIONS=537} [2022-11-18 20:03:49,857 INFO L288 CegarLoopForPetriNet]: 538 programPoint places, -5 predicate places. [2022-11-18 20:03:49,858 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 537 transitions, 1082 flow [2022-11-18 20:03:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 534.3333333333334) internal successors, (1603), 3 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:49,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:03:49,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:49,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:03:49,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-18 20:03:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1315097196, now seen corresponding path program 1 times [2022-11-18 20:03:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758923320] [2022-11-18 20:03:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:03:50,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758923320] [2022-11-18 20:03:50,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758923320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:50,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:50,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:03:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232439549] [2022-11-18 20:03:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:50,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:50,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 561 [2022-11-18 20:03:50,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 537 transitions, 1082 flow. Second operand has 6 states, 6 states have (on average 326.5) internal successors, (1959), 6 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:03:50,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:03:50,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 561 [2022-11-18 20:03:50,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand