./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5adb63485f34d5cafa0d99a2c73701114544138d3e69ca15b00fc732949a8202 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:00:58,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:00:58,897 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-12 01:00:58,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:00:58,903 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:00:58,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:00:58,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:00:58,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:00:58,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:00:58,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:00:58,932 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:00:58,933 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:00:58,934 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:00:58,934 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:00:58,935 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:00:58,935 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:00:58,936 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:00:58,937 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:00:58,937 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:00:58,938 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:00:58,938 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:00:58,939 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:00:58,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:00:58,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:00:58,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:00:58,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:00:58,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:00:58,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:00:58,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:00:58,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:00:58,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:00:58,944 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-12 01:00:58,945 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 01:00:58,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:00:58,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:00:58,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:00:58,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:00:58,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:00:58,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:00:58,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:00:58,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:00:58,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:00:58,948 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:00:58,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:00:58,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:00:58,949 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:00:58,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:00:58,949 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5adb63485f34d5cafa0d99a2c73701114544138d3e69ca15b00fc732949a8202 [2023-11-12 01:00:59,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:00:59,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:00:59,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:00:59,293 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:00:59,294 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:00:59,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-3.i [2023-11-12 01:01:02,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:01:02,912 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:01:02,912 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/sv-benchmarks/c/pthread-race-challenges/thread-join-counter-inner-race-3.i [2023-11-12 01:01:02,932 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/data/0d46364bf/3b167133c14847fda1904fc3aee65a11/FLAG2a8de18bc [2023-11-12 01:01:02,946 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/data/0d46364bf/3b167133c14847fda1904fc3aee65a11 [2023-11-12 01:01:02,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:01:02,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:01:02,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:02,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:01:02,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:01:02,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:02" (1/1) ... [2023-11-12 01:01:02,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3678f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:02, skipping insertion in model container [2023-11-12 01:01:02,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:02" (1/1) ... [2023-11-12 01:01:03,015 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:01:03,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:03,403 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:01:03,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:03,479 WARN L672 CHandler]: The function pthread_detach is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 01:01:03,487 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:01:03,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03 WrapperNode [2023-11-12 01:01:03,488 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:03,489 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:03,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:01:03,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:01:03,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,539 INFO L138 Inliner]: procedures = 159, calls = 48, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2023-11-12 01:01:03,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:03,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:01:03,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:01:03,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:01:03,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,555 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,565 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,577 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:01:03,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:01:03,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:01:03,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:01:03,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (1/1) ... [2023-11-12 01:01:03,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:01:03,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:03,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:01:03,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_876d1e4f-2e92-4f1f-8f6f-1bf9d5ce5ce5/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:01:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 01:01:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 01:01:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 01:01:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:01:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 01:01:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 01:01:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure pthread_detach [2023-11-12 01:01:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:01:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2023-11-12 01:01:03,665 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2023-11-12 01:01:03,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:01:03,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:01:03,667 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 01:01:03,856 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:01:03,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:01:04,234 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:01:04,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:01:04,257 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-12 01:01:04,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:04 BoogieIcfgContainer [2023-11-12 01:01:04,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:01:04,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:01:04,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:01:04,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:01:04,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:01:02" (1/3) ... [2023-11-12 01:01:04,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0ee1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:04, skipping insertion in model container [2023-11-12 01:01:04,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:03" (2/3) ... [2023-11-12 01:01:04,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0ee1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:04, skipping insertion in model container [2023-11-12 01:01:04,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:04" (3/3) ... [2023-11-12 01:01:04,286 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-counter-inner-race-3.i [2023-11-12 01:01:04,306 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 01:01:04,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:01:04,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-12 01:01:04,322 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 01:01:04,414 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 01:01:04,458 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:01:04,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 176 transitions, 356 flow [2023-11-12 01:01:04,478 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 176 transitions, 356 flow [2023-11-12 01:01:04,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 176 transitions, 356 flow [2023-11-12 01:01:04,607 INFO L124 PetriNetUnfolderBase]: 13/224 cut-off events. [2023-11-12 01:01:04,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 01:01:04,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 224 events. 13/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 447 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-12 01:01:04,625 INFO L119 LiptonReduction]: Number of co-enabled transitions 7370 [2023-11-12 01:01:10,686 INFO L134 LiptonReduction]: Checked pairs total: 29986 [2023-11-12 01:01:10,686 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-11-12 01:01:10,698 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 67 transitions, 138 flow [2023-11-12 01:01:10,800 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 953 states, 901 states have (on average 2.2241953385127635) internal successors, (2004), 952 states have internal predecessors, (2004), 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) [2023-11-12 01:01:10,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:01:10,829 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2eae93ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:01:10,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 01:01:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 953 states, 901 states have (on average 2.2241953385127635) internal successors, (2004), 952 states have internal predecessors, (2004), 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) [2023-11-12 01:01:10,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 01:01:10,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:10,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 01:01:10,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-12 01:01:10,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash 18619512, now seen corresponding path program 1 times [2023-11-12 01:01:10,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:10,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153689039] [2023-11-12 01:01:10,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:10,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:11,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153689039] [2023-11-12 01:01:11,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153689039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:11,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:01:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823021472] [2023-11-12 01:01:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:11,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:01:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:11,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:01:11,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:11,243 INFO L87 Difference]: Start difference. First operand has 953 states, 901 states have (on average 2.2241953385127635) internal successors, (2004), 952 states have internal predecessors, (2004), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-12 01:01:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:11,477 INFO L93 Difference]: Finished difference Result 1380 states and 2782 transitions. [2023-11-12 01:01:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:01:11,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2023-11-12 01:01:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:11,513 INFO L225 Difference]: With dead ends: 1380 [2023-11-12 01:01:11,513 INFO L226 Difference]: Without dead ends: 1380 [2023-11-12 01:01:11,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:11,520 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 51 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:11,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 59 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:01:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2023-11-12 01:01:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 897. [2023-11-12 01:01:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 866 states have (on average 2.0727482678983833) internal successors, (1795), 896 states have internal predecessors, (1795), 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) [2023-11-12 01:01:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1795 transitions. [2023-11-12 01:01:11,665 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1795 transitions. Word has length 4 [2023-11-12 01:01:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:11,666 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 1795 transitions. [2023-11-12 01:01:11,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-12 01:01:11,671 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1795 transitions. [2023-11-12 01:01:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 01:01:11,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:11,673 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 01:01:11,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:01:11,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-11-12 01:01:11,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 721724606, now seen corresponding path program 1 times [2023-11-12 01:01:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:11,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242580212] [2023-11-12 01:01:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:11,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:01:11,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 01:01:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:01:11,849 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 01:01:11,849 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 01:01:11,851 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-11-12 01:01:11,853 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-11-12 01:01:11,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-11-12 01:01:11,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-11-12 01:01:11,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-11-12 01:01:11,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-11-12 01:01:11,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-11-12 01:01:11,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-11-12 01:01:11,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-11-12 01:01:11,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-11-12 01:01:11,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-11-12 01:01:11,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-11-12 01:01:11,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-11-12 01:01:11,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-11-12 01:01:11,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-11-12 01:01:11,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-11-12 01:01:11,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-11-12 01:01:11,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-11-12 01:01:11,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 01:01:11,866 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-12 01:01:11,868 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 01:01:11,868 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 01:01:11,915 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 01:01:11,920 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:01:11,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 232 transitions, 474 flow [2023-11-12 01:01:11,921 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 232 transitions, 474 flow [2023-11-12 01:01:11,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 232 transitions, 474 flow [2023-11-12 01:01:12,018 INFO L124 PetriNetUnfolderBase]: 20/346 cut-off events. [2023-11-12 01:01:12,019 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 01:01:12,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 346 events. 20/346 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 875 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 225. Up to 6 conditions per place. [2023-11-12 01:01:12,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 20900 [2023-11-12 01:01:17,585 INFO L134 LiptonReduction]: Checked pairs total: 106650 [2023-11-12 01:01:17,585 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-11-12 01:01:17,586 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 105 places, 108 transitions, 226 flow [2023-11-12 01:01:19,082 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38061 states, 37674 states have (on average 3.1558634602112865) internal successors, (118894), 38060 states have internal predecessors, (118894), 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) [2023-11-12 01:01:19,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:01:19,089 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2eae93ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:01:19,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-12 01:01:19,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 38061 states, 37674 states have (on average 3.1558634602112865) internal successors, (118894), 38060 states have internal predecessors, (118894), 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) [2023-11-12 01:01:19,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 01:01:19,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:19,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 01:01:19,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-12 01:01:19,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash 31894316, now seen corresponding path program 1 times [2023-11-12 01:01:19,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:19,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141522918] [2023-11-12 01:01:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:19,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:19,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:19,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141522918] [2023-11-12 01:01:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141522918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:19,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:19,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:01:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843227338] [2023-11-12 01:01:19,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:19,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 01:01:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 01:01:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:01:19,388 INFO L87 Difference]: Start difference. First operand has 38061 states, 37674 states have (on average 3.1558634602112865) internal successors, (118894), 38060 states have internal predecessors, (118894), 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-12 01:01:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:20,269 INFO L93 Difference]: Finished difference Result 36871 states and 110769 transitions. [2023-11-12 01:01:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 01:01:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2023-11-12 01:01:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:20,938 INFO L225 Difference]: With dead ends: 36871 [2023-11-12 01:01:20,939 INFO L226 Difference]: Without dead ends: 36871 [2023-11-12 01:01:20,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 01:01:20,940 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:20,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:01:21,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36871 states. [2023-11-12 01:01:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36871 to 36871. [2023-11-12 01:01:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36871 states, 36540 states have (on average 3.031444991789819) internal successors, (110769), 36870 states have internal predecessors, (110769), 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) [2023-11-12 01:01:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36871 states to 36871 states and 110769 transitions. [2023-11-12 01:01:23,241 INFO L78 Accepts]: Start accepts. Automaton has 36871 states and 110769 transitions. Word has length 4 [2023-11-12 01:01:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:23,242 INFO L495 AbstractCegarLoop]: Abstraction has 36871 states and 110769 transitions. [2023-11-12 01:01:23,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-12 01:01:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 36871 states and 110769 transitions. [2023-11-12 01:01:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-12 01:01:23,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:23,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-12 01:01:23,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 01:01:23,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-12 01:01:23,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash 31884183, now seen corresponding path program 1 times [2023-11-12 01:01:23,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:23,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101368589] [2023-11-12 01:01:23,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:23,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:23,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101368589] [2023-11-12 01:01:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101368589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:23,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:23,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:01:23,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007356708] [2023-11-12 01:01:23,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:23,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:01:23,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:23,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:01:23,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:23,347 INFO L87 Difference]: Start difference. First operand 36871 states and 110769 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-12 01:01:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:24,651 INFO L93 Difference]: Finished difference Result 63132 states and 186622 transitions. [2023-11-12 01:01:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:01:24,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2023-11-12 01:01:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:25,391 INFO L225 Difference]: With dead ends: 63132 [2023-11-12 01:01:25,391 INFO L226 Difference]: Without dead ends: 63132 [2023-11-12 01:01:25,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:25,393 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 85 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:25,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 01:01:25,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63132 states. [2023-11-12 01:01:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63132 to 40477. [2023-11-12 01:01:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40477 states, 40182 states have (on average 3.002812204469663) internal successors, (120659), 40476 states have internal predecessors, (120659), 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) [2023-11-12 01:01:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40477 states to 40477 states and 120659 transitions. [2023-11-12 01:01:27,767 INFO L78 Accepts]: Start accepts. Automaton has 40477 states and 120659 transitions. Word has length 4 [2023-11-12 01:01:27,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:27,768 INFO L495 AbstractCegarLoop]: Abstraction has 40477 states and 120659 transitions. [2023-11-12 01:01:27,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-12 01:01:27,768 INFO L276 IsEmpty]: Start isEmpty. Operand 40477 states and 120659 transitions. [2023-11-12 01:01:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:01:27,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:27,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:27,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 01:01:27,770 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-12 01:01:27,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1503333676, now seen corresponding path program 1 times [2023-11-12 01:01:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980197796] [2023-11-12 01:01:27,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:28,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:28,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980197796] [2023-11-12 01:01:28,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980197796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:01:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027198689] [2023-11-12 01:01:28,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:01:28,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:01:28,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:28,098 INFO L87 Difference]: Start difference. First operand 40477 states and 120659 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-12 01:01:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:28,572 INFO L93 Difference]: Finished difference Result 42475 states and 126506 transitions. [2023-11-12 01:01:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:01:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10 [2023-11-12 01:01:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:28,781 INFO L225 Difference]: With dead ends: 42475 [2023-11-12 01:01:28,781 INFO L226 Difference]: Without dead ends: 42475 [2023-11-12 01:01:28,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:28,783 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 62 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:28,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 121 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:01:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42475 states. [2023-11-12 01:01:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42475 to 41381. [2023-11-12 01:01:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41381 states, 41094 states have (on average 2.9998783277364094) internal successors, (123277), 41380 states have internal predecessors, (123277), 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) [2023-11-12 01:01:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41381 states to 41381 states and 123277 transitions. [2023-11-12 01:01:30,681 INFO L78 Accepts]: Start accepts. Automaton has 41381 states and 123277 transitions. Word has length 10 [2023-11-12 01:01:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:30,681 INFO L495 AbstractCegarLoop]: Abstraction has 41381 states and 123277 transitions. [2023-11-12 01:01:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-12 01:01:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 41381 states and 123277 transitions. [2023-11-12 01:01:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-12 01:01:30,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:30,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 01:01:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 01:01:30,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-12 01:01:30,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1703959769, now seen corresponding path program 1 times [2023-11-12 01:01:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706615330] [2023-11-12 01:01:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:30,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:30,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706615330] [2023-11-12 01:01:30,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706615330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:30,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:30,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 01:01:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358663070] [2023-11-12 01:01:30,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:30,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 01:01:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:30,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 01:01:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:30,723 INFO L87 Difference]: Start difference. First operand 41381 states and 123277 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-12 01:01:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:31,097 INFO L93 Difference]: Finished difference Result 42381 states and 126256 transitions. [2023-11-12 01:01:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 01:01:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 10 [2023-11-12 01:01:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:31,226 INFO L225 Difference]: With dead ends: 42381 [2023-11-12 01:01:31,226 INFO L226 Difference]: Without dead ends: 42381 [2023-11-12 01:01:31,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 01:01:31,228 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 66 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:31,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 140 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 01:01:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42381 states. [2023-11-12 01:01:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42381 to 42381. [2023-11-12 01:01:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42381 states, 42100 states have (on average 2.99895486935867) internal successors, (126256), 42380 states have internal predecessors, (126256), 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) [2023-11-12 01:01:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42381 states to 42381 states and 126256 transitions. [2023-11-12 01:01:32,913 INFO L78 Accepts]: Start accepts. Automaton has 42381 states and 126256 transitions. Word has length 10 [2023-11-12 01:01:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:32,913 INFO L495 AbstractCegarLoop]: Abstraction has 42381 states and 126256 transitions. [2023-11-12 01:01:32,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-12 01:01:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 42381 states and 126256 transitions. [2023-11-12 01:01:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 01:01:32,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:32,915 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 01:01:32,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 01:01:32,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-11-12 01:01:32,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash 147394634, now seen corresponding path program 1 times [2023-11-12 01:01:32,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:32,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008975339] [2023-11-12 01:01:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:32,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:01:32,953 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 01:01:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 01:01:32,985 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 01:01:32,986 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 01:01:32,986 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2023-11-12 01:01:32,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-11-12 01:01:32,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-11-12 01:01:32,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-11-12 01:01:32,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-11-12 01:01:32,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-11-12 01:01:32,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-11-12 01:01:32,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-11-12 01:01:32,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-11-12 01:01:32,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-11-12 01:01:32,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-11-12 01:01:32,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-11-12 01:01:32,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-11-12 01:01:32,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-11-12 01:01:32,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-11-12 01:01:32,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-11-12 01:01:32,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-11-12 01:01:32,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-11-12 01:01:32,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-11-12 01:01:32,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-11-12 01:01:32,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-11-12 01:01:32,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-11-12 01:01:32,992 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-11-12 01:01:32,993 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-11-12 01:01:32,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 01:01:32,993 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 01:01:32,994 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 01:01:32,994 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 01:01:33,044 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 01:01:33,050 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 01:01:33,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 288 transitions, 594 flow [2023-11-12 01:01:33,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 288 transitions, 594 flow [2023-11-12 01:01:33,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 288 transitions, 594 flow [2023-11-12 01:01:33,194 INFO L124 PetriNetUnfolderBase]: 27/468 cut-off events. [2023-11-12 01:01:33,195 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 01:01:33,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 468 events. 27/468 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1306 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 350. Up to 8 conditions per place. [2023-11-12 01:01:33,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 40590 [2023-11-12 01:01:39,320 INFO L134 LiptonReduction]: Checked pairs total: 215208 [2023-11-12 01:01:39,320 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-11-12 01:01:39,321 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 144 transitions, 306 flow