./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ --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 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:18:09,782 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:18:09,903 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-19 04:18:09,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:18:09,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:18:09,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:18:09,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:18:09,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:18:09,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:18:09,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:18:09,963 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:18:09,964 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:18:09,965 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:18:09,967 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:18:09,967 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:18:09,968 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:18:09,968 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:18:09,968 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:18:09,969 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:18:09,970 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:18:09,971 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:18:09,972 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:18:09,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:18:09,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:18:09,974 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:18:09,975 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:18:09,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:18:09,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:18:09,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:18:09,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:18:09,978 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:18:09,978 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 04:18:09,978 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:18:09,979 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:18:09,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:18:09,979 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:18:09,979 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:18:09,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:18:09,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:09,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:18:09,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:18:09,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:18:09,981 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:18:09,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:18:09,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:18:09,982 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:18:09,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:18:09,983 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_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2023-11-19 04:18:10,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:18:10,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:18:10,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:18:10,310 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:18:10,311 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:18:10,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2023-11-19 04:18:13,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:18:13,784 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:18:13,785 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2023-11-19 04:18:13,813 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/data/121d16615/d8e022a3ad8441619a550f686573de8f/FLAG5c9ad111c [2023-11-19 04:18:13,834 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/data/121d16615/d8e022a3ad8441619a550f686573de8f [2023-11-19 04:18:13,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:18:13,842 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:18:13,846 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:13,846 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:18:13,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:18:13,852 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:13,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505bbeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:13, skipping insertion in model container [2023-11-19 04:18:13,853 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:18:13" (1/1) ... [2023-11-19 04:18:13,905 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:18:14,048 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:18:14,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:14,467 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:18:14,489 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:18:14,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:18:14,605 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:18:14,613 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:18:14,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14 WrapperNode [2023-11-19 04:18:14,613 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:18:14,614 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:14,614 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:18:14,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:18:14,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,644 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,698 INFO L138 Inliner]: procedures = 225, calls = 49, calls flagged for inlining = 16, calls inlined = 10, statements flattened = 207 [2023-11-19 04:18:14,699 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:18:14,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:18:14,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:18:14,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:18:14,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:18:14,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:18:14,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:18:14,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:18:14,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (1/1) ... [2023-11-19 04:18:14,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:18:14,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:18:14,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:18:14,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdbbac94-9004-4183-a68d-f2d5fce231ea/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:18:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:18:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:18:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:18:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:18:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:18:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:18:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2023-11-19 04:18:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2023-11-19 04:18:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:18:14,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:18:14,891 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:18:15,103 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:18:15,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:18:15,744 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:18:15,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:18:15,757 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 04:18:15,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:15 BoogieIcfgContainer [2023-11-19 04:18:15,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:18:15,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:18:15,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:18:15,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:18:15,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:18:13" (1/3) ... [2023-11-19 04:18:15,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73887656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:15, skipping insertion in model container [2023-11-19 04:18:15,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:18:14" (2/3) ... [2023-11-19 04:18:15,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73887656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:18:15, skipping insertion in model container [2023-11-19 04:18:15,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:18:15" (3/3) ... [2023-11-19 04:18:15,775 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2023-11-19 04:18:15,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:18:15,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:18:15,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-11-19 04:18:15,799 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:18:15,990 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 04:18:16,033 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:18:16,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 250 transitions, 507 flow [2023-11-19 04:18:16,058 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 250 transitions, 507 flow [2023-11-19 04:18:16,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 250 transitions, 507 flow [2023-11-19 04:18:16,208 INFO L124 PetriNetUnfolderBase]: 12/249 cut-off events. [2023-11-19 04:18:16,208 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 04:18:16,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 249 events. 12/249 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 601 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-19 04:18:16,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 19008 [2023-11-19 04:18:28,680 INFO L134 LiptonReduction]: Checked pairs total: 281082 [2023-11-19 04:18:28,681 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-11-19 04:18:28,690 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 103 places, 104 transitions, 215 flow [2023-11-19 04:18:28,799 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2196 states, 2139 states have (on average 2.115474520804114) internal successors, (4525), 2195 states have internal predecessors, (4525), 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) [2023-11-19 04:18:28,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:18:28,831 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;@72bf958d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:18:28,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 04:18:28,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 2196 states, 2139 states have (on average 2.115474520804114) internal successors, (4525), 2195 states have internal predecessors, (4525), 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) [2023-11-19 04:18:28,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2023-11-19 04:18:28,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:28,848 INFO L195 NwaCegarLoop]: trace histogram [1] [2023-11-19 04:18:28,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:28,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:28,858 INFO L85 PathProgramCache]: Analyzing trace with hash 881, now seen corresponding path program 1 times [2023-11-19 04:18:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248689138] [2023-11-19 04:18:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:28,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:29,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:29,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248689138] [2023-11-19 04:18:29,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248689138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:29,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 04:18:29,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258043111] [2023-11-19 04:18:29,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:29,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:18:29,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:18:29,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:18:29,069 INFO L87 Difference]: Start difference. First operand has 2196 states, 2139 states have (on average 2.115474520804114) internal successors, (4525), 2195 states have internal predecessors, (4525), 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, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-19 04:18:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:29,214 INFO L93 Difference]: Finished difference Result 2194 states and 4429 transitions. [2023-11-19 04:18:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:18:29,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2023-11-19 04:18:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:29,255 INFO L225 Difference]: With dead ends: 2194 [2023-11-19 04:18:29,256 INFO L226 Difference]: Without dead ends: 2194 [2023-11-19 04:18:29,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:18:29,262 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:29,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2023-11-19 04:18:29,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 2194. [2023-11-19 04:18:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2194 states, 2139 states have (on average 2.070593735390369) internal successors, (4429), 2193 states have internal predecessors, (4429), 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) [2023-11-19 04:18:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 4429 transitions. [2023-11-19 04:18:29,423 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 4429 transitions. Word has length 1 [2023-11-19 04:18:29,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:29,424 INFO L495 AbstractCegarLoop]: Abstraction has 2194 states and 4429 transitions. [2023-11-19 04:18:29,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2023-11-19 04:18:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 4429 transitions. [2023-11-19 04:18:29,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:18:29,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:29,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:29,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:18:29,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:29,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:29,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1089003332, now seen corresponding path program 1 times [2023-11-19 04:18:29,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:29,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632522455] [2023-11-19 04:18:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:29,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:30,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:30,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632522455] [2023-11-19 04:18:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632522455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:30,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:30,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:18:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478012786] [2023-11-19 04:18:30,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:30,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:18:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:18:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:30,119 INFO L87 Difference]: Start difference. First operand 2194 states and 4429 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-11-19 04:18:30,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:30,821 INFO L93 Difference]: Finished difference Result 3292 states and 6647 transitions. [2023-11-19 04:18:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:18:30,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2023-11-19 04:18:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:30,845 INFO L225 Difference]: With dead ends: 3292 [2023-11-19 04:18:30,846 INFO L226 Difference]: Without dead ends: 3292 [2023-11-19 04:18:30,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:30,847 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 124 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:30,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 93 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 04:18:30,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2023-11-19 04:18:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2592. [2023-11-19 04:18:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2537 states have (on average 2.06267244777296) internal successors, (5233), 2591 states have internal predecessors, (5233), 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) [2023-11-19 04:18:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 5233 transitions. [2023-11-19 04:18:30,941 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 5233 transitions. Word has length 9 [2023-11-19 04:18:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:30,941 INFO L495 AbstractCegarLoop]: Abstraction has 2592 states and 5233 transitions. [2023-11-19 04:18:30,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-11-19 04:18:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 5233 transitions. [2023-11-19 04:18:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:18:30,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:30,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:30,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:18:30,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:30,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2029305826, now seen corresponding path program 1 times [2023-11-19 04:18:30,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:30,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379707146] [2023-11-19 04:18:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:31,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:31,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379707146] [2023-11-19 04:18:31,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379707146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:31,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:31,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:31,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130653039] [2023-11-19 04:18:31,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:31,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:31,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:31,023 INFO L87 Difference]: Start difference. First operand 2592 states and 5233 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 04:18:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:31,112 INFO L93 Difference]: Finished difference Result 4418 states and 8921 transitions. [2023-11-19 04:18:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 04:18:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:31,142 INFO L225 Difference]: With dead ends: 4418 [2023-11-19 04:18:31,143 INFO L226 Difference]: Without dead ends: 4418 [2023-11-19 04:18:31,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:31,147 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 79 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:31,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 193 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:31,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2023-11-19 04:18:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 2643. [2023-11-19 04:18:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2643 states, 2588 states have (on average 2.061823802163833) internal successors, (5336), 2642 states have internal predecessors, (5336), 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) [2023-11-19 04:18:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2643 states to 2643 states and 5336 transitions. [2023-11-19 04:18:31,248 INFO L78 Accepts]: Start accepts. Automaton has 2643 states and 5336 transitions. Word has length 9 [2023-11-19 04:18:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:31,249 INFO L495 AbstractCegarLoop]: Abstraction has 2643 states and 5336 transitions. [2023-11-19 04:18:31,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 04:18:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2643 states and 5336 transitions. [2023-11-19 04:18:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:18:31,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:31,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:18:31,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:31,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1553200740, now seen corresponding path program 1 times [2023-11-19 04:18:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:31,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775696730] [2023-11-19 04:18:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:31,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:31,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775696730] [2023-11-19 04:18:31,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775696730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:31,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:31,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821899184] [2023-11-19 04:18:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:31,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:31,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:31,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:31,367 INFO L87 Difference]: Start difference. First operand 2643 states and 5336 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 04:18:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:31,465 INFO L93 Difference]: Finished difference Result 4639 states and 9370 transitions. [2023-11-19 04:18:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 04:18:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:31,496 INFO L225 Difference]: With dead ends: 4639 [2023-11-19 04:18:31,496 INFO L226 Difference]: Without dead ends: 4639 [2023-11-19 04:18:31,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:31,500 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 86 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:31,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 185 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2023-11-19 04:18:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 2685. [2023-11-19 04:18:31,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2630 states have (on average 2.0608365019011408) internal successors, (5420), 2684 states have internal predecessors, (5420), 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) [2023-11-19 04:18:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 5420 transitions. [2023-11-19 04:18:31,623 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 5420 transitions. Word has length 9 [2023-11-19 04:18:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:31,624 INFO L495 AbstractCegarLoop]: Abstraction has 2685 states and 5420 transitions. [2023-11-19 04:18:31,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 04:18:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 5420 transitions. [2023-11-19 04:18:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:18:31,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:31,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:31,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:18:31,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:31,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2084923979, now seen corresponding path program 1 times [2023-11-19 04:18:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:31,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700082558] [2023-11-19 04:18:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:31,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700082558] [2023-11-19 04:18:31,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700082558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:31,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:31,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:18:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365933657] [2023-11-19 04:18:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:31,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:18:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:18:31,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:31,905 INFO L87 Difference]: Start difference. First operand 2685 states and 5420 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2023-11-19 04:18:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:32,674 INFO L93 Difference]: Finished difference Result 4029 states and 8148 transitions. [2023-11-19 04:18:32,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:18:32,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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 [2023-11-19 04:18:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:32,701 INFO L225 Difference]: With dead ends: 4029 [2023-11-19 04:18:32,702 INFO L226 Difference]: Without dead ends: 4029 [2023-11-19 04:18:32,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:32,703 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 98 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:32,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 85 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:18:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4029 states. [2023-11-19 04:18:32,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4029 to 3129. [2023-11-19 04:18:32,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3129 states, 3080 states have (on average 2.048051948051948) internal successors, (6308), 3128 states have internal predecessors, (6308), 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) [2023-11-19 04:18:32,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 6308 transitions. [2023-11-19 04:18:32,826 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 6308 transitions. Word has length 10 [2023-11-19 04:18:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:32,826 INFO L495 AbstractCegarLoop]: Abstraction has 3129 states and 6308 transitions. [2023-11-19 04:18:32,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 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) [2023-11-19 04:18:32,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 6308 transitions. [2023-11-19 04:18:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:18:32,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:32,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:32,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:18:32,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:32,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash -694051508, now seen corresponding path program 1 times [2023-11-19 04:18:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4090107] [2023-11-19 04:18:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:33,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:33,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4090107] [2023-11-19 04:18:33,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4090107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:33,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:33,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:18:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089335862] [2023-11-19 04:18:33,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:33,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:18:33,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:18:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:33,197 INFO L87 Difference]: Start difference. First operand 3129 states and 6308 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2023-11-19 04:18:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:34,107 INFO L93 Difference]: Finished difference Result 3300 states and 6654 transitions. [2023-11-19 04:18:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:18:34,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2023-11-19 04:18:34,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:34,132 INFO L225 Difference]: With dead ends: 3300 [2023-11-19 04:18:34,132 INFO L226 Difference]: Without dead ends: 3300 [2023-11-19 04:18:34,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:34,133 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 96 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:34,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 120 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 04:18:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-11-19 04:18:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3300. [2023-11-19 04:18:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3254 states have (on average 2.0448678549477566) internal successors, (6654), 3299 states have internal predecessors, (6654), 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) [2023-11-19 04:18:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 6654 transitions. [2023-11-19 04:18:34,258 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 6654 transitions. Word has length 15 [2023-11-19 04:18:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:34,258 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 6654 transitions. [2023-11-19 04:18:34,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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) [2023-11-19 04:18:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 6654 transitions. [2023-11-19 04:18:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:18:34,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:34,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:34,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:18:34,261 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:34,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash -462412562, now seen corresponding path program 1 times [2023-11-19 04:18:34,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:34,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419710575] [2023-11-19 04:18:34,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:34,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:34,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:34,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419710575] [2023-11-19 04:18:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419710575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:34,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:34,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:18:34,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698340503] [2023-11-19 04:18:34,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:34,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:18:34,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:34,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:18:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:34,510 INFO L87 Difference]: Start difference. First operand 3300 states and 6654 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2023-11-19 04:18:35,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:35,103 INFO L93 Difference]: Finished difference Result 4367 states and 8827 transitions. [2023-11-19 04:18:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:18:35,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2023-11-19 04:18:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:35,122 INFO L225 Difference]: With dead ends: 4367 [2023-11-19 04:18:35,122 INFO L226 Difference]: Without dead ends: 4367 [2023-11-19 04:18:35,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:35,123 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 100 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:35,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 94 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:18:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2023-11-19 04:18:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 3439. [2023-11-19 04:18:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 3396 states have (on average 2.0527090694935217) internal successors, (6971), 3438 states have internal predecessors, (6971), 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) [2023-11-19 04:18:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 6971 transitions. [2023-11-19 04:18:35,251 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 6971 transitions. Word has length 16 [2023-11-19 04:18:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:35,251 INFO L495 AbstractCegarLoop]: Abstraction has 3439 states and 6971 transitions. [2023-11-19 04:18:35,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 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) [2023-11-19 04:18:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 6971 transitions. [2023-11-19 04:18:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 04:18:35,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:35,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:35,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:18:35,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:35,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1554325817, now seen corresponding path program 1 times [2023-11-19 04:18:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269558106] [2023-11-19 04:18:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:35,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269558106] [2023-11-19 04:18:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269558106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:35,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:18:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391068155] [2023-11-19 04:18:35,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:35,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:18:35,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:18:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:35,710 INFO L87 Difference]: Start difference. First operand 3439 states and 6971 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-19 04:18:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:36,434 INFO L93 Difference]: Finished difference Result 3633 states and 7363 transitions. [2023-11-19 04:18:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:18:36,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2023-11-19 04:18:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:36,445 INFO L225 Difference]: With dead ends: 3633 [2023-11-19 04:18:36,446 INFO L226 Difference]: Without dead ends: 3633 [2023-11-19 04:18:36,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:36,447 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 96 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:36,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 115 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:18:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2023-11-19 04:18:36,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3633. [2023-11-19 04:18:36,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3590 states have (on average 2.050974930362117) internal successors, (7363), 3632 states have internal predecessors, (7363), 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) [2023-11-19 04:18:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 7363 transitions. [2023-11-19 04:18:36,589 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 7363 transitions. Word has length 27 [2023-11-19 04:18:36,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:36,590 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 7363 transitions. [2023-11-19 04:18:36,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2023-11-19 04:18:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 7363 transitions. [2023-11-19 04:18:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:18:36,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:36,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:36,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:18:36,596 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:36,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1390733129, now seen corresponding path program 1 times [2023-11-19 04:18:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675313301] [2023-11-19 04:18:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:37,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:37,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:37,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675313301] [2023-11-19 04:18:37,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675313301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:37,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:37,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:18:37,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426602413] [2023-11-19 04:18:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:37,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 04:18:37,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 04:18:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:37,029 INFO L87 Difference]: Start difference. First operand 3633 states and 7363 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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) [2023-11-19 04:18:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:37,543 INFO L93 Difference]: Finished difference Result 3795 states and 7687 transitions. [2023-11-19 04:18:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:18:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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 28 [2023-11-19 04:18:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:37,555 INFO L225 Difference]: With dead ends: 3795 [2023-11-19 04:18:37,556 INFO L226 Difference]: Without dead ends: 3795 [2023-11-19 04:18:37,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:18:37,557 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 76 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:37,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 97 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 04:18:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3795 states. [2023-11-19 04:18:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3795 to 3795. [2023-11-19 04:18:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3795 states, 3752 states have (on average 2.048773987206823) internal successors, (7687), 3794 states have internal predecessors, (7687), 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) [2023-11-19 04:18:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3795 states to 3795 states and 7687 transitions. [2023-11-19 04:18:37,702 INFO L78 Accepts]: Start accepts. Automaton has 3795 states and 7687 transitions. Word has length 28 [2023-11-19 04:18:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:37,703 INFO L495 AbstractCegarLoop]: Abstraction has 3795 states and 7687 transitions. [2023-11-19 04:18:37,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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) [2023-11-19 04:18:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3795 states and 7687 transitions. [2023-11-19 04:18:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:18:37,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:37,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:37,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:18:37,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:37,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1730318727, now seen corresponding path program 1 times [2023-11-19 04:18:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485412408] [2023-11-19 04:18:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:38,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:38,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485412408] [2023-11-19 04:18:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485412408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:38,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 04:18:38,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108662976] [2023-11-19 04:18:38,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:38,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:18:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:18:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:18:38,622 INFO L87 Difference]: Start difference. First operand 3795 states and 7687 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:41,264 INFO L93 Difference]: Finished difference Result 5735 states and 11658 transitions. [2023-11-19 04:18:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 04:18:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 31 [2023-11-19 04:18:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:41,285 INFO L225 Difference]: With dead ends: 5735 [2023-11-19 04:18:41,285 INFO L226 Difference]: Without dead ends: 5735 [2023-11-19 04:18:41,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=402, Unknown=0, NotChecked=0, Total=600 [2023-11-19 04:18:41,286 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 486 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:41,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 459 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-19 04:18:41,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5735 states. [2023-11-19 04:18:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5735 to 5039. [2023-11-19 04:18:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5039 states, 4996 states have (on average 2.0866693354683745) internal successors, (10425), 5038 states have internal predecessors, (10425), 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) [2023-11-19 04:18:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 10425 transitions. [2023-11-19 04:18:41,444 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 10425 transitions. Word has length 31 [2023-11-19 04:18:41,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:41,444 INFO L495 AbstractCegarLoop]: Abstraction has 5039 states and 10425 transitions. [2023-11-19 04:18:41,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 10425 transitions. [2023-11-19 04:18:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:18:41,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:41,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:18:41,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:41,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:41,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1723859877, now seen corresponding path program 2 times [2023-11-19 04:18:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:41,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251017980] [2023-11-19 04:18:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:42,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:42,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251017980] [2023-11-19 04:18:42,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251017980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:42,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:42,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 04:18:42,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727793956] [2023-11-19 04:18:42,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:42,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:18:42,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:42,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:18:42,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:18:42,480 INFO L87 Difference]: Start difference. First operand 5039 states and 10425 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:44,414 INFO L93 Difference]: Finished difference Result 5739 states and 11666 transitions. [2023-11-19 04:18:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 04:18:44,414 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 31 [2023-11-19 04:18:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:44,430 INFO L225 Difference]: With dead ends: 5739 [2023-11-19 04:18:44,431 INFO L226 Difference]: Without dead ends: 5739 [2023-11-19 04:18:44,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-11-19 04:18:44,432 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 445 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:44,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 421 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 04:18:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2023-11-19 04:18:44,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 5045. [2023-11-19 04:18:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5045 states, 5002 states have (on average 2.0865653738504597) internal successors, (10437), 5044 states have internal predecessors, (10437), 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) [2023-11-19 04:18:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 10437 transitions. [2023-11-19 04:18:44,564 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 10437 transitions. Word has length 31 [2023-11-19 04:18:44,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:44,564 INFO L495 AbstractCegarLoop]: Abstraction has 5045 states and 10437 transitions. [2023-11-19 04:18:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 10437 transitions. [2023-11-19 04:18:44,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:18:44,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:44,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:44,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:18:44,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:44,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1766769701, now seen corresponding path program 3 times [2023-11-19 04:18:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:44,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276104993] [2023-11-19 04:18:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:44,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:45,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:45,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276104993] [2023-11-19 04:18:45,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276104993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:45,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:45,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 04:18:45,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135192638] [2023-11-19 04:18:45,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:18:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:45,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:18:45,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:18:45,549 INFO L87 Difference]: Start difference. First operand 5045 states and 10437 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:47,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:47,688 INFO L93 Difference]: Finished difference Result 5733 states and 11654 transitions. [2023-11-19 04:18:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:18:47,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 31 [2023-11-19 04:18:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:47,706 INFO L225 Difference]: With dead ends: 5733 [2023-11-19 04:18:47,706 INFO L226 Difference]: Without dead ends: 5733 [2023-11-19 04:18:47,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:18:47,707 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 476 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:47,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 445 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 04:18:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5733 states. [2023-11-19 04:18:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5733 to 5051. [2023-11-19 04:18:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 5008 states have (on average 2.0872603833865813) internal successors, (10453), 5050 states have internal predecessors, (10453), 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) [2023-11-19 04:18:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 10453 transitions. [2023-11-19 04:18:47,868 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 10453 transitions. Word has length 31 [2023-11-19 04:18:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:47,868 INFO L495 AbstractCegarLoop]: Abstraction has 5051 states and 10453 transitions. [2023-11-19 04:18:47,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 10453 transitions. [2023-11-19 04:18:47,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:18:47,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:47,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:47,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 04:18:47,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:47,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1625560361, now seen corresponding path program 4 times [2023-11-19 04:18:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885049152] [2023-11-19 04:18:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:47,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:48,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:48,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885049152] [2023-11-19 04:18:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885049152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 04:18:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354430069] [2023-11-19 04:18:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:48,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:18:48,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:18:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:18:48,834 INFO L87 Difference]: Start difference. First operand 5051 states and 10453 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:50,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:50,885 INFO L93 Difference]: Finished difference Result 5740 states and 11668 transitions. [2023-11-19 04:18:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 04:18:50,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 31 [2023-11-19 04:18:50,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:50,902 INFO L225 Difference]: With dead ends: 5740 [2023-11-19 04:18:50,902 INFO L226 Difference]: Without dead ends: 5740 [2023-11-19 04:18:50,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2023-11-19 04:18:50,904 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 478 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:50,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 433 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:18:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2023-11-19 04:18:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5051. [2023-11-19 04:18:51,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5051 states, 5008 states have (on average 2.0872603833865813) internal successors, (10453), 5050 states have internal predecessors, (10453), 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) [2023-11-19 04:18:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5051 states to 5051 states and 10453 transitions. [2023-11-19 04:18:51,027 INFO L78 Accepts]: Start accepts. Automaton has 5051 states and 10453 transitions. Word has length 31 [2023-11-19 04:18:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:51,028 INFO L495 AbstractCegarLoop]: Abstraction has 5051 states and 10453 transitions. [2023-11-19 04:18:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5051 states and 10453 transitions. [2023-11-19 04:18:51,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:18:51,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:51,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:51,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:18:51,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:51,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:51,033 INFO L85 PathProgramCache]: Analyzing trace with hash 413774763, now seen corresponding path program 5 times [2023-11-19 04:18:51,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:51,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135608757] [2023-11-19 04:18:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:51,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:51,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135608757] [2023-11-19 04:18:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135608757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:51,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:51,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 04:18:51,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215041641] [2023-11-19 04:18:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:51,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:18:51,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:18:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:18:51,703 INFO L87 Difference]: Start difference. First operand 5051 states and 10453 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:53,917 INFO L93 Difference]: Finished difference Result 5740 states and 11668 transitions. [2023-11-19 04:18:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 04:18:53,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 31 [2023-11-19 04:18:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:53,932 INFO L225 Difference]: With dead ends: 5740 [2023-11-19 04:18:53,932 INFO L226 Difference]: Without dead ends: 5740 [2023-11-19 04:18:53,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=238, Invalid=464, Unknown=0, NotChecked=0, Total=702 [2023-11-19 04:18:53,933 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 639 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:53,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 439 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:18:53,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2023-11-19 04:18:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5055. [2023-11-19 04:18:54,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 5012 states have (on average 2.087190742218675) internal successors, (10461), 5054 states have internal predecessors, (10461), 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) [2023-11-19 04:18:54,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 10461 transitions. [2023-11-19 04:18:54,056 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 10461 transitions. Word has length 31 [2023-11-19 04:18:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:54,056 INFO L495 AbstractCegarLoop]: Abstraction has 5055 states and 10461 transitions. [2023-11-19 04:18:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2023-11-19 04:18:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 10461 transitions. [2023-11-19 04:18:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 04:18:54,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:54,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 04:18:54,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-19 04:18:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 606820443, now seen corresponding path program 6 times [2023-11-19 04:18:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:54,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241208640] [2023-11-19 04:18:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:54,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241208640] [2023-11-19 04:18:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241208640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:54,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:54,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 04:18:54,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943754380] [2023-11-19 04:18:54,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:54,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:18:54,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:18:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:18:54,862 INFO L87 Difference]: Start difference. First operand 5055 states and 10461 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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)