./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b48d13cab05bc3b998f8de65b383ec2ee92eaa2c6f230f8a23e235950b9a5ba --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 18:43:14,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:43:14,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:43:14,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:43:14,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:43:14,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:43:14,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:43:14,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:43:14,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:43:14,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:43:14,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:43:14,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:43:14,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:43:14,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:43:14,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:43:14,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:43:14,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:43:14,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:43:14,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:43:14,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:43:14,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:43:14,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:43:14,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:43:14,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:43:14,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:43:14,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:43:14,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:43:14,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:43:14,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:43:14,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:43:14,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:43:14,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:43:14,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:43:14,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:43:14,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:43:14,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:43:14,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:43:14,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:43:14,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:43:14,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:43:14,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:43:14,513 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 18:43:14,528 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:43:14,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:43:14,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:43:14,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:43:14,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:43:14,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:43:14,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:43:14,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:43:14,530 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:43:14,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:43:14,531 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 18:43:14,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:43:14,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:43:14,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:43:14,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:43:14,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:43:14,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:43:14,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:43:14,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:43:14,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:43:14,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:43:14,534 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:43:14,534 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b48d13cab05bc3b998f8de65b383ec2ee92eaa2c6f230f8a23e235950b9a5ba [2022-12-13 18:43:14,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:43:14,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:43:14,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:43:14,730 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:43:14,730 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:43:14,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i [2022-12-13 18:43:17,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:43:17,515 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:43:17,516 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/sv-benchmarks/c/goblint-regression/10-synch_02-thread_nonunique.i [2022-12-13 18:43:17,527 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/data/1694fb28d/752ba6f3035047a4adf2fdc52de73123/FLAGed32ca999 [2022-12-13 18:43:17,541 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/data/1694fb28d/752ba6f3035047a4adf2fdc52de73123 [2022-12-13 18:43:17,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:43:17,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:43:17,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:43:17,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:43:17,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:43:17,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:43:17" (1/1) ... [2022-12-13 18:43:17,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a84a2d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:17, skipping insertion in model container [2022-12-13 18:43:17,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:43:17" (1/1) ... [2022-12-13 18:43:17,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:43:17,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:43:17,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:43:17,949 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:43:17,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:43:18,018 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:43:18,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18 WrapperNode [2022-12-13 18:43:18,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:43:18,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:43:18,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:43:18,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:43:18,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,057 INFO L138 Inliner]: procedures = 259, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-12-13 18:43:18,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:43:18,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:43:18,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:43:18,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:43:18,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:43:18,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:43:18,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:43:18,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:43:18,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (1/1) ... [2022-12-13 18:43:18,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:43:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:43:18,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:43:18,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:43:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:43:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:43:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:43:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:43:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 18:43:18,141 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 18:43:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:43:18,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:43:18,142 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 18:43:18,229 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:43:18,230 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:43:18,331 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:43:18,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:43:18,337 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:43:18,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:43:18 BoogieIcfgContainer [2022-12-13 18:43:18,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:43:18,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:43:18,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:43:18,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:43:18,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:43:17" (1/3) ... [2022-12-13 18:43:18,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4833a03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:43:18, skipping insertion in model container [2022-12-13 18:43:18,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:18" (2/3) ... [2022-12-13 18:43:18,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4833a03a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:43:18, skipping insertion in model container [2022-12-13 18:43:18,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:43:18" (3/3) ... [2022-12-13 18:43:18,345 INFO L112 eAbstractionObserver]: Analyzing ICFG 10-synch_02-thread_nonunique.i [2022-12-13 18:43:18,352 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:43:18,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:43:18,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:43:18,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:43:18,394 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:43:18,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 56 transitions, 120 flow [2022-12-13 18:43:18,461 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-12-13 18:43:18,461 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:43:18,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 79 events. 5/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2022-12-13 18:43:18,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 56 transitions, 120 flow [2022-12-13 18:43:18,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 56 transitions, 120 flow [2022-12-13 18:43:18,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:43:18,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 56 transitions, 120 flow [2022-12-13 18:43:18,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 56 transitions, 120 flow [2022-12-13 18:43:18,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 56 transitions, 120 flow [2022-12-13 18:43:18,495 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2022-12-13 18:43:18,496 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:43:18,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 79 events. 5/79 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 37. Up to 4 conditions per place. [2022-12-13 18:43:18,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 522 [2022-12-13 18:43:19,439 INFO L134 LiptonReduction]: Checked pairs total: 489 [2022-12-13 18:43:19,439 INFO L136 LiptonReduction]: Total number of compositions: 50 [2022-12-13 18:43:19,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:43:19,461 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;@676b6d77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:43:19,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 18:43:19,463 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2022-12-13 18:43:19,464 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:43:19,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:19,464 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:43:19,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2022-12-13 18:43:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 215794, now seen corresponding path program 1 times [2022-12-13 18:43:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549770610] [2022-12-13 18:43:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:43:19,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:19,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549770610] [2022-12-13 18:43:19,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549770610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:19,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:19,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413868057] [2022-12-13 18:43:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:19,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:19,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2022-12-13 18:43:19,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:19,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:19,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2022-12-13 18:43:19,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:19,740 INFO L130 PetriNetUnfolder]: 4/22 cut-off events. [2022-12-13 18:43:19,740 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:43:19,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 22 events. 4/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 2 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 26. Up to 11 conditions per place. [2022-12-13 18:43:19,741 INFO L137 encePairwiseOnDemand]: 99/106 looper letters, 5 selfloop transitions, 2 changer transitions 6/14 dead transitions. [2022-12-13 18:43:19,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 14 transitions, 62 flow [2022-12-13 18:43:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2022-12-13 18:43:19,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4748427672955975 [2022-12-13 18:43:19,754 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2022-12-13 18:43:19,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2022-12-13 18:43:19,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:19,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2022-12-13 18:43:19,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:19,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:19,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:19,764 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 34 flow. Second operand 3 states and 151 transitions. [2022-12-13 18:43:19,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 14 transitions, 62 flow [2022-12-13 18:43:19,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:43:19,767 INFO L231 Difference]: Finished difference. Result has 15 places, 6 transitions, 21 flow [2022-12-13 18:43:19,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=21, PETRI_PLACES=15, PETRI_TRANSITIONS=6} [2022-12-13 18:43:19,771 INFO L288 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2022-12-13 18:43:19,771 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 6 transitions, 21 flow [2022-12-13 18:43:19,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:19,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:19,771 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 18:43:19,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:43:19,771 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 1 more)] === [2022-12-13 18:43:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:19,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2144025992, now seen corresponding path program 1 times [2022-12-13 18:43:19,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:19,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245729360] [2022-12-13 18:43:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:19,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:43:19,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:43:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:43:19,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:43:19,811 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:43:19,812 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-12-13 18:43:19,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 4 remaining) [2022-12-13 18:43:19,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 4 remaining) [2022-12-13 18:43:19,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 4 remaining) [2022-12-13 18:43:19,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:43:19,815 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 18:43:19,818 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:43:19,818 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 18:43:19,832 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:43:19,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 152 flow [2022-12-13 18:43:19,862 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2022-12-13 18:43:19,862 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:43:19,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 144 events. 10/144 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2022-12-13 18:43:19,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 67 transitions, 152 flow [2022-12-13 18:43:19,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 67 transitions, 152 flow [2022-12-13 18:43:19,864 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:43:19,865 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 67 transitions, 152 flow [2022-12-13 18:43:19,865 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 67 transitions, 152 flow [2022-12-13 18:43:19,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 67 transitions, 152 flow [2022-12-13 18:43:19,886 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2022-12-13 18:43:19,886 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 18:43:19,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 144 events. 10/144 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 81. Up to 8 conditions per place. [2022-12-13 18:43:19,890 INFO L119 LiptonReduction]: Number of co-enabled transitions 1404 [2022-12-13 18:43:20,647 INFO L134 LiptonReduction]: Checked pairs total: 2912 [2022-12-13 18:43:20,647 INFO L136 LiptonReduction]: Total number of compositions: 48 [2022-12-13 18:43:20,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:43:20,650 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;@676b6d77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:43:20,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 18:43:20,651 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 18:43:20,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:43:20,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:20,652 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:43:20,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2022-12-13 18:43:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 343826, now seen corresponding path program 1 times [2022-12-13 18:43:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:20,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771947421] [2022-12-13 18:43:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:43:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:20,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771947421] [2022-12-13 18:43:20,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771947421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:20,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067505516] [2022-12-13 18:43:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:20,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 115 [2022-12-13 18:43:20,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:20,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 115 [2022-12-13 18:43:20,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:20,759 INFO L130 PetriNetUnfolder]: 80/216 cut-off events. [2022-12-13 18:43:20,759 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-13 18:43:20,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 216 events. 80/216 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 942 event pairs, 36 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 175. Up to 104 conditions per place. [2022-12-13 18:43:20,760 INFO L137 encePairwiseOnDemand]: 109/115 looper letters, 18 selfloop transitions, 4 changer transitions 3/32 dead transitions. [2022-12-13 18:43:20,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 32 transitions, 138 flow [2022-12-13 18:43:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2022-12-13 18:43:20,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5449275362318841 [2022-12-13 18:43:20,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2022-12-13 18:43:20,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2022-12-13 18:43:20,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:20,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2022-12-13 18:43:20,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,766 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 64 flow. Second operand 3 states and 188 transitions. [2022-12-13 18:43:20,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 32 transitions, 138 flow [2022-12-13 18:43:20,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 32 transitions, 138 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:43:20,768 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 80 flow [2022-12-13 18:43:20,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2022-12-13 18:43:20,769 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2022-12-13 18:43:20,769 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 80 flow [2022-12-13 18:43:20,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:20,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:43:20,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:43:20,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2022-12-13 18:43:20,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1669364410, now seen corresponding path program 1 times [2022-12-13 18:43:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:20,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550472505] [2022-12-13 18:43:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:43:20,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:20,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550472505] [2022-12-13 18:43:20,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550472505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:20,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:20,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742605134] [2022-12-13 18:43:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:20,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:20,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:20,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2022-12-13 18:43:20,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:20,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2022-12-13 18:43:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:20,882 INFO L130 PetriNetUnfolder]: 179/384 cut-off events. [2022-12-13 18:43:20,882 INFO L131 PetriNetUnfolder]: For 132/132 co-relation queries the response was YES. [2022-12-13 18:43:20,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 384 events. 179/384 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1663 event pairs, 130 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 414. Up to 283 conditions per place. [2022-12-13 18:43:20,885 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 26 selfloop transitions, 3 changer transitions 3/36 dead transitions. [2022-12-13 18:43:20,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 191 flow [2022-12-13 18:43:20,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2022-12-13 18:43:20,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5681159420289855 [2022-12-13 18:43:20,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2022-12-13 18:43:20,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2022-12-13 18:43:20,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:20,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2022-12-13 18:43:20,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,890 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 80 flow. Second operand 3 states and 196 transitions. [2022-12-13 18:43:20,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 191 flow [2022-12-13 18:43:20,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:43:20,892 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 95 flow [2022-12-13 18:43:20,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2022-12-13 18:43:20,893 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2022-12-13 18:43:20,893 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 95 flow [2022-12-13 18:43:20,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:20,894 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:20,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:43:20,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2022-12-13 18:43:20,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2037715918, now seen corresponding path program 1 times [2022-12-13 18:43:20,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:20,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383115039] [2022-12-13 18:43:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:20,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:20,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:43:20,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:20,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383115039] [2022-12-13 18:43:20,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383115039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:20,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:20,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834671135] [2022-12-13 18:43:20,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:20,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:20,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:20,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 115 [2022-12-13 18:43:20,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:20,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:20,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 115 [2022-12-13 18:43:20,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:21,012 INFO L130 PetriNetUnfolder]: 187/388 cut-off events. [2022-12-13 18:43:21,012 INFO L131 PetriNetUnfolder]: For 202/206 co-relation queries the response was YES. [2022-12-13 18:43:21,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 388 events. 187/388 cut-off events. For 202/206 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1596 event pairs, 134 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 338. Up to 310 conditions per place. [2022-12-13 18:43:21,014 INFO L137 encePairwiseOnDemand]: 111/115 looper letters, 25 selfloop transitions, 4 changer transitions 3/36 dead transitions. [2022-12-13 18:43:21,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 197 flow [2022-12-13 18:43:21,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:21,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2022-12-13 18:43:21,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2022-12-13 18:43:21,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2022-12-13 18:43:21,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2022-12-13 18:43:21,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:21,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2022-12-13 18:43:21,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:21,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:21,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:21,020 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 95 flow. Second operand 3 states and 195 transitions. [2022-12-13 18:43:21,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 197 flow [2022-12-13 18:43:21,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:43:21,023 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 116 flow [2022-12-13 18:43:21,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2022-12-13 18:43:21,024 INFO L288 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2022-12-13 18:43:21,024 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 116 flow [2022-12-13 18:43:21,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:21,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:21,025 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 18:43:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:43:21,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 2 more)] === [2022-12-13 18:43:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:21,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1252268606, now seen corresponding path program 1 times [2022-12-13 18:43:21,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032095432] [2022-12-13 18:43:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:43:21,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:43:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:43:21,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:43:21,058 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:43:21,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-12-13 18:43:21,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2022-12-13 18:43:21,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2022-12-13 18:43:21,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 5 remaining) [2022-12-13 18:43:21,059 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 5 remaining) [2022-12-13 18:43:21,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:43:21,060 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 18:43:21,060 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 18:43:21,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 18:43:21,075 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 18:43:21,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 186 flow [2022-12-13 18:43:21,106 INFO L130 PetriNetUnfolder]: 20/254 cut-off events. [2022-12-13 18:43:21,106 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:43:21,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 254 events. 20/254 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 710 event pairs, 1 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 152. Up to 16 conditions per place. [2022-12-13 18:43:21,107 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 186 flow [2022-12-13 18:43:21,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 78 transitions, 186 flow [2022-12-13 18:43:21,108 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:43:21,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 78 transitions, 186 flow [2022-12-13 18:43:21,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 78 transitions, 186 flow [2022-12-13 18:43:21,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 186 flow [2022-12-13 18:43:21,134 INFO L130 PetriNetUnfolder]: 20/254 cut-off events. [2022-12-13 18:43:21,134 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 18:43:21,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 254 events. 20/254 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 710 event pairs, 1 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 152. Up to 16 conditions per place. [2022-12-13 18:43:21,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430 [2022-12-13 18:43:21,884 INFO L134 LiptonReduction]: Checked pairs total: 4759 [2022-12-13 18:43:21,885 INFO L136 LiptonReduction]: Total number of compositions: 53 [2022-12-13 18:43:21,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:43:21,888 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;@676b6d77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:43:21,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 18:43:21,889 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2022-12-13 18:43:21,889 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:43:21,889 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:21,889 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:43:21,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-12-13 18:43:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:21,890 INFO L85 PathProgramCache]: Analyzing trace with hash 481981, now seen corresponding path program 1 times [2022-12-13 18:43:21,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:21,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159084386] [2022-12-13 18:43:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:21,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:43:21,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:21,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159084386] [2022-12-13 18:43:21,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159084386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:21,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:21,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197334161] [2022-12-13 18:43:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:21,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:21,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:21,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:21,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 131 [2022-12-13 18:43:21,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:21,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:21,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 131 [2022-12-13 18:43:21,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:22,126 INFO L130 PetriNetUnfolder]: 1145/2018 cut-off events. [2022-12-13 18:43:22,126 INFO L131 PetriNetUnfolder]: For 224/224 co-relation queries the response was YES. [2022-12-13 18:43:22,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4053 conditions, 2018 events. 1145/2018 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10768 event pairs, 585 based on Foata normal form. 0/1872 useless extension candidates. Maximal degree in co-relation 699. Up to 1170 conditions per place. [2022-12-13 18:43:22,133 INFO L137 encePairwiseOnDemand]: 125/131 looper letters, 34 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2022-12-13 18:43:22,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 203 flow [2022-12-13 18:43:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:22,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2022-12-13 18:43:22,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5801526717557252 [2022-12-13 18:43:22,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2022-12-13 18:43:22,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2022-12-13 18:43:22,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:22,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2022-12-13 18:43:22,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,136 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 88 flow. Second operand 3 states and 228 transitions. [2022-12-13 18:43:22,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 203 flow [2022-12-13 18:43:22,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 203 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:43:22,137 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 108 flow [2022-12-13 18:43:22,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-12-13 18:43:22,138 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2022-12-13 18:43:22,138 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 108 flow [2022-12-13 18:43:22,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:22,138 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 18:43:22,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:43:22,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-12-13 18:43:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1490047871, now seen corresponding path program 1 times [2022-12-13 18:43:22,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:22,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775098907] [2022-12-13 18:43:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:22,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:43:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775098907] [2022-12-13 18:43:22,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775098907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:22,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:22,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499092117] [2022-12-13 18:43:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:22,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:22,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 131 [2022-12-13 18:43:22,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:22,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 131 [2022-12-13 18:43:22,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:22,360 INFO L130 PetriNetUnfolder]: 1557/2658 cut-off events. [2022-12-13 18:43:22,360 INFO L131 PetriNetUnfolder]: For 866/866 co-relation queries the response was YES. [2022-12-13 18:43:22,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5826 conditions, 2658 events. 1557/2658 cut-off events. For 866/866 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 14515 event pairs, 1163 based on Foata normal form. 0/2546 useless extension candidates. Maximal degree in co-relation 2213. Up to 2071 conditions per place. [2022-12-13 18:43:22,370 INFO L137 encePairwiseOnDemand]: 126/131 looper letters, 39 selfloop transitions, 4 changer transitions 1/49 dead transitions. [2022-12-13 18:43:22,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 267 flow [2022-12-13 18:43:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-12-13 18:43:22,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5852417302798982 [2022-12-13 18:43:22,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-12-13 18:43:22,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-12-13 18:43:22,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:22,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-12-13 18:43:22,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,373 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 108 flow. Second operand 3 states and 230 transitions. [2022-12-13 18:43:22,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 267 flow [2022-12-13 18:43:22,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:43:22,376 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 130 flow [2022-12-13 18:43:22,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2022-12-13 18:43:22,377 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2022-12-13 18:43:22,377 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 130 flow [2022-12-13 18:43:22,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:22,377 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:22,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:43:22,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-12-13 18:43:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -908539225, now seen corresponding path program 1 times [2022-12-13 18:43:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:22,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140425774] [2022-12-13 18:43:22,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 18:43:22,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:22,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140425774] [2022-12-13 18:43:22,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140425774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:22,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:22,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:22,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308361993] [2022-12-13 18:43:22,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:22,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:22,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:22,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:22,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 131 [2022-12-13 18:43:22,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:22,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 131 [2022-12-13 18:43:22,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:22,651 INFO L130 PetriNetUnfolder]: 1831/3129 cut-off events. [2022-12-13 18:43:22,652 INFO L131 PetriNetUnfolder]: For 1570/1623 co-relation queries the response was YES. [2022-12-13 18:43:22,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7823 conditions, 3129 events. 1831/3129 cut-off events. For 1570/1623 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 17713 event pairs, 1284 based on Foata normal form. 0/2969 useless extension candidates. Maximal degree in co-relation 2156. Up to 2482 conditions per place. [2022-12-13 18:43:22,663 INFO L137 encePairwiseOnDemand]: 126/131 looper letters, 39 selfloop transitions, 5 changer transitions 1/50 dead transitions. [2022-12-13 18:43:22,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 284 flow [2022-12-13 18:43:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2022-12-13 18:43:22,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5826972010178118 [2022-12-13 18:43:22,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2022-12-13 18:43:22,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2022-12-13 18:43:22,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:22,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2022-12-13 18:43:22,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,666 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 130 flow. Second operand 3 states and 229 transitions. [2022-12-13 18:43:22,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 284 flow [2022-12-13 18:43:22,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:43:22,668 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 159 flow [2022-12-13 18:43:22,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2022-12-13 18:43:22,669 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2022-12-13 18:43:22,669 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 159 flow [2022-12-13 18:43:22,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:22,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:22,669 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:22,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:43:22,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2022-12-13 18:43:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1086019468, now seen corresponding path program 1 times [2022-12-13 18:43:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:22,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803078960] [2022-12-13 18:43:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:43:22,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:43:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:43:22,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:43:22,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:43:22,684 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 6 remaining) [2022-12-13 18:43:22,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2022-12-13 18:43:22,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-13 18:43:22,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2022-12-13 18:43:22,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2022-12-13 18:43:22,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2022-12-13 18:43:22,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:43:22,685 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 18:43:22,688 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2022-12-13 18:43:22,688 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:43:22,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:43:22 BasicIcfg [2022-12-13 18:43:22,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:43:22,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:43:22,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:43:22,705 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:43:22,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:43:18" (3/4) ... [2022-12-13 18:43:22,707 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 18:43:22,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:43:22,708 INFO L158 Benchmark]: Toolchain (without parser) took 5163.27ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 88.1MB in the beginning and 52.3MB in the end (delta: 35.8MB). Peak memory consumption was 62.3MB. Max. memory is 16.1GB. [2022-12-13 18:43:22,708 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 119.5MB. Free memory was 96.6MB in the beginning and 96.4MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:43:22,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.58ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 61.3MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 18:43:22,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.01ms. Allocated memory is still 119.5MB. Free memory was 61.3MB in the beginning and 58.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:43:22,709 INFO L158 Benchmark]: Boogie Preprocessor took 23.78ms. Allocated memory is still 119.5MB. Free memory was 58.9MB in the beginning and 57.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:43:22,709 INFO L158 Benchmark]: RCFGBuilder took 256.05ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 57.6MB in the beginning and 113.4MB in the end (delta: -55.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-12-13 18:43:22,709 INFO L158 Benchmark]: TraceAbstraction took 4364.25ms. Allocated memory is still 144.7MB. Free memory was 112.5MB in the beginning and 53.3MB in the end (delta: 59.2MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2022-12-13 18:43:22,709 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 144.7MB. Free memory was 53.3MB in the beginning and 52.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:43:22,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 119.5MB. Free memory was 96.6MB in the beginning and 96.4MB in the end (delta: 184.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 473.58ms. Allocated memory is still 119.5MB. Free memory was 87.7MB in the beginning and 61.3MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.01ms. Allocated memory is still 119.5MB. Free memory was 61.3MB in the beginning and 58.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.78ms. Allocated memory is still 119.5MB. Free memory was 58.9MB in the beginning and 57.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.05ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 57.6MB in the beginning and 113.4MB in the end (delta: -55.8MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4364.25ms. Allocated memory is still 144.7MB. Free memory was 112.5MB in the beginning and 53.3MB in the end (delta: 59.2MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 144.7MB. Free memory was 53.3MB in the beginning and 52.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 56 PlacesBefore, 15 PlacesAfterwards, 56 TransitionsBefore, 13 TransitionsAfterwards, 522 CoEnabledTransitionPairs, 4 FixpointIterations, 14 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 50 TotalNumberOfCompositions, 489 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 489, independent: 489, independent conditional: 0, independent unconditional: 489, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 280, independent: 280, independent conditional: 0, independent unconditional: 280, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 489, independent: 209, independent conditional: 0, independent unconditional: 209, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 280, unknown conditional: 0, unknown unconditional: 280] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 68 PlacesBefore, 26 PlacesAfterwards, 67 TransitionsBefore, 23 TransitionsAfterwards, 1404 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 48 TotalNumberOfCompositions, 2912 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1974, independent: 1899, independent conditional: 0, independent unconditional: 1899, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 743, independent: 732, independent conditional: 0, independent unconditional: 732, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1974, independent: 1167, independent conditional: 0, independent unconditional: 1167, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 743, unknown conditional: 0, unknown unconditional: 743] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 80 PlacesBefore, 33 PlacesAfterwards, 78 TransitionsBefore, 29 TransitionsAfterwards, 2430 CoEnabledTransitionPairs, 4 FixpointIterations, 11 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 53 TotalNumberOfCompositions, 4759 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2751, independent: 2663, independent conditional: 0, independent unconditional: 2663, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1207, independent: 1188, independent conditional: 0, independent unconditional: 1188, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2751, independent: 1475, independent conditional: 0, independent unconditional: 1475, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 1207, unknown conditional: 0, unknown unconditional: 1207] , Statistics on independence cache: Total cache size (in pairs): 111, Positive cache size: 102, Positive conditional cache size: 0, Positive unconditional cache size: 102, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 919]: Data race detected Data race detected The following path leads to a data race: [L917] 0 int myglobal; [L923] 0 pthread_t id[10]; [L924] 0 int i; [L925] 0 i=0 VAL [i=0, id={2:0}, myglobal=0] [L925] COND TRUE 0 i<10 [L926] FCALL, FORK 0 pthread_create(&id[i], ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, i=0, id={2:0}, myglobal=0, pthread_create(&id[i], ((void *)0), t_fun, ((void *)0))=-1] [L925] 0 i++ VAL [arg={0:0}, i=1, id={2:0}, myglobal=0] [L925] COND TRUE 0 i<10 [L919] 1 myglobal=42 VAL [arg={0:0}, arg={0:0}, myglobal=42, myglobal=42=44] [L926] FCALL, FORK 0 pthread_create(&id[i], ((void *)0), t_fun, ((void *)0)) VAL [arg={0:0}, arg={0:0}, i=1, id={2:0}, myglobal=42, myglobal=42=44, pthread_create(&id[i], ((void *)0), t_fun, ((void *)0))=0] [L919] 2 myglobal=42 VAL [arg={0:0}, arg={0:0}, myglobal=42, myglobal=42=43] Now there is a data race, but we were unable to determine exactly which statements and variables are involved. - UnprovableResult [Line: 928]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 926]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 20 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156 IncrementalHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 4 mSDtfsCounter, 156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 84 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 124 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 234 IncrementalHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 1 mSDtfsCounter, 234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 18:43:22,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bed6f27-99ec-424c-91f6-fc2b25504d56/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE