./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4fc63b2a 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_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2 --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 3fabc1cc94c3126ff26eb9b915167fe6a6af37b0806df7c41554f022c4d5bcac --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:22:46,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:22:46,307 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DataRace-32bit-Taipan_Default.epf [2024-11-02 12:22:46,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:22:46,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:22:46,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:22:46,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:22:46,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:22:46,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:22:46,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:22:46,354 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:22:46,355 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:22:46,355 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:22:46,357 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:22:46,358 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:22:46,358 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:22:46,358 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:22:46,362 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:22:46,363 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:22:46,363 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:22:46,364 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:22:46,364 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:22:46,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:22:46,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:22:46,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:22:46,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:22:46,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:22:46,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:22:46,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:22:46,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:22:46,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:22:46,371 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-02 12:22:46,371 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:22:46,371 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:22:46,371 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:22:46,371 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:22:46,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:22:46,372 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:22:46,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:22:46,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:22:46,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:22:46,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:22:46,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:22:46,373 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:22:46,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:22:46,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:22:46,374 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:22:46,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:22:46,375 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_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3fabc1cc94c3126ff26eb9b915167fe6a6af37b0806df7c41554f022c4d5bcac [2024-11-02 12:22:46,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:22:46,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:22:46,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:22:46,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:22:46,746 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:22:46,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i Unable to find full path for "g++" [2024-11-02 12:22:48,803 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:22:49,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:22:49,216 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/sv-benchmarks/c/pthread-race-challenges/thread-join-array-const.i [2024-11-02 12:22:49,237 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/data/ff058fadd/b496d957616c467784ab58cfc8278f89/FLAG548a371e7 [2024-11-02 12:22:49,258 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/data/ff058fadd/b496d957616c467784ab58cfc8278f89 [2024-11-02 12:22:49,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:22:49,265 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:22:49,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:22:49,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:22:49,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:22:49,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b764f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49, skipping insertion in model container [2024-11-02 12:22:49,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,336 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:22:49,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:22:49,764 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:22:49,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:22:49,859 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:22:49,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49 WrapperNode [2024-11-02 12:22:49,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:22:49,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:22:49,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:22:49,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:22:49,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,883 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,904 INFO L138 Inliner]: procedures = 158, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2024-11-02 12:22:49,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:22:49,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:22:49,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:22:49,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:22:49,914 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:22:49,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:22:49,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:22:49,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:22:49,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (1/1) ... [2024-11-02 12:22:49,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:22:49,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:49,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:22:50,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:22:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:22:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:22:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-02 12:22:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:22:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:22:50,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:22:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:22:50,035 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-02 12:22:50,035 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-02 12:22:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-02 12:22:50,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:22:50,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:22:50,037 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-02 12:22:50,215 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:22:50,218 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:22:50,450 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-02 12:22:50,450 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:22:50,493 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:22:50,494 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:22:50,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:22:50 BoogieIcfgContainer [2024-11-02 12:22:50,494 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:22:50,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:22:50,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:22:50,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:22:50,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:22:49" (1/3) ... [2024-11-02 12:22:50,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e71e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:22:50, skipping insertion in model container [2024-11-02 12:22:50,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:22:49" (2/3) ... [2024-11-02 12:22:50,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e71e83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:22:50, skipping insertion in model container [2024-11-02 12:22:50,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:22:50" (3/3) ... [2024-11-02 12:22:50,508 INFO L112 eAbstractionObserver]: Analyzing ICFG thread-join-array-const.i [2024-11-02 12:22:50,524 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:22:50,524 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-02 12:22:50,525 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-02 12:22:50,578 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-02 12:22:50,613 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 79 transitions, 165 flow [2024-11-02 12:22:50,731 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 743 states, 728 states have (on average 1.9491758241758241) internal successors, (1419), 742 states have internal predecessors, (1419), 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) [2024-11-02 12:22:50,759 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:22:50,766 INFO L333 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, 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;@3e2349da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:22:50,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-02 12:22:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 743 states, 728 states have (on average 1.9491758241758241) internal successors, (1419), 742 states have internal predecessors, (1419), 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) [2024-11-02 12:22:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:22:50,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:50,778 INFO L215 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] [2024-11-02 12:22:50,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-11-02 12:22:50,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1339485524, now seen corresponding path program 1 times [2024-11-02 12:22:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:50,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291260080] [2024-11-02 12:22:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:51,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:51,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291260080] [2024-11-02 12:22:51,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291260080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:51,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:51,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:22:51,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816232613] [2024-11-02 12:22:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:51,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:22:51,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:51,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:22:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:51,193 INFO L87 Difference]: Start difference. First operand has 743 states, 728 states have (on average 1.9491758241758241) internal successors, (1419), 742 states have internal predecessors, (1419), 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 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-02 12:22:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:51,401 INFO L93 Difference]: Finished difference Result 1134 states and 2163 transitions. [2024-11-02 12:22:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:22:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-02 12:22:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:51,428 INFO L225 Difference]: With dead ends: 1134 [2024-11-02 12:22:51,428 INFO L226 Difference]: Without dead ends: 691 [2024-11-02 12:22:51,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:51,442 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 119 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:51,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 127 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:22:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-02 12:22:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2024-11-02 12:22:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 678 states have (on average 1.8893805309734513) internal successors, (1281), 690 states have internal predecessors, (1281), 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) [2024-11-02 12:22:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1281 transitions. [2024-11-02 12:22:51,546 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1281 transitions. Word has length 22 [2024-11-02 12:22:51,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:51,547 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1281 transitions. [2024-11-02 12:22:51,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-02 12:22:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1281 transitions. [2024-11-02 12:22:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:22:51,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:51,549 INFO L215 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] [2024-11-02 12:22:51,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:22:51,550 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-11-02 12:22:51,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1244862311, now seen corresponding path program 1 times [2024-11-02 12:22:51,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:51,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019088120] [2024-11-02 12:22:51,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:51,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:52,323 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019088120] [2024-11-02 12:22:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019088120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:52,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:22:52,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597250849] [2024-11-02 12:22:52,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:52,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:22:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:22:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:22:52,328 INFO L87 Difference]: Start difference. First operand 691 states and 1281 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-02 12:22:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:52,530 INFO L93 Difference]: Finished difference Result 691 states and 1281 transitions. [2024-11-02 12:22:52,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:22:52,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2024-11-02 12:22:52,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:52,536 INFO L225 Difference]: With dead ends: 691 [2024-11-02 12:22:52,536 INFO L226 Difference]: Without dead ends: 673 [2024-11-02 12:22:52,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:22:52,538 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 68 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:52,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 270 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:22:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-02 12:22:52,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2024-11-02 12:22:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 663 states have (on average 1.8808446455505279) internal successors, (1247), 672 states have internal predecessors, (1247), 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) [2024-11-02 12:22:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1247 transitions. [2024-11-02 12:22:52,587 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1247 transitions. Word has length 25 [2024-11-02 12:22:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:52,588 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1247 transitions. [2024-11-02 12:22:52,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-02 12:22:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1247 transitions. [2024-11-02 12:22:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:22:52,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:52,591 INFO L215 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, 1, 1, 1, 1] [2024-11-02 12:22:52,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:22:52,592 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-11-02 12:22:52,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash -469446995, now seen corresponding path program 1 times [2024-11-02 12:22:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:52,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337952573] [2024-11-02 12:22:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:52,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:52,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:52,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337952573] [2024-11-02 12:22:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337952573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:52,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:22:52,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128483746] [2024-11-02 12:22:52,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:52,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:22:52,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:22:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:22:52,683 INFO L87 Difference]: Start difference. First operand 673 states and 1247 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-02 12:22:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:52,739 INFO L93 Difference]: Finished difference Result 695 states and 1280 transitions. [2024-11-02 12:22:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:22:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2024-11-02 12:22:52,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:52,746 INFO L225 Difference]: With dead ends: 695 [2024-11-02 12:22:52,746 INFO L226 Difference]: Without dead ends: 592 [2024-11-02 12:22:52,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:22:52,752 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 40 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:52,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 172 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:22:52,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-02 12:22:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 588. [2024-11-02 12:22:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 581 states have (on average 1.8519793459552496) internal successors, (1076), 587 states have internal predecessors, (1076), 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) [2024-11-02 12:22:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1076 transitions. [2024-11-02 12:22:52,779 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1076 transitions. Word has length 35 [2024-11-02 12:22:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:52,781 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 1076 transitions. [2024-11-02 12:22:52,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-02 12:22:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1076 transitions. [2024-11-02 12:22:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 12:22:52,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:52,784 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:52,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:22:52,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-11-02 12:22:52,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash 441889680, now seen corresponding path program 1 times [2024-11-02 12:22:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:52,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002365960] [2024-11-02 12:22:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:52,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:52,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002365960] [2024-11-02 12:22:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002365960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:52,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:52,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:22:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456026812] [2024-11-02 12:22:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:52,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:22:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:22:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:52,949 INFO L87 Difference]: Start difference. First operand 588 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-02 12:22:53,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:53,030 INFO L93 Difference]: Finished difference Result 588 states and 1076 transitions. [2024-11-02 12:22:53,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:22:53,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2024-11-02 12:22:53,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:53,034 INFO L225 Difference]: With dead ends: 588 [2024-11-02 12:22:53,035 INFO L226 Difference]: Without dead ends: 506 [2024-11-02 12:22:53,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:53,042 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 55 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:53,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 122 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:22:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-02 12:22:53,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2024-11-02 12:22:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 502 states have (on average 1.842629482071713) internal successors, (925), 505 states have internal predecessors, (925), 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) [2024-11-02 12:22:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 925 transitions. [2024-11-02 12:22:53,069 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 925 transitions. Word has length 39 [2024-11-02 12:22:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:53,070 INFO L471 AbstractCegarLoop]: Abstraction has 506 states and 925 transitions. [2024-11-02 12:22:53,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-02 12:22:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 925 transitions. [2024-11-02 12:22:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:22:53,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:53,076 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:53,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:22:53,077 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-11-02 12:22:53,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash 215499896, now seen corresponding path program 1 times [2024-11-02 12:22:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:53,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340181523] [2024-11-02 12:22:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:53,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340181523] [2024-11-02 12:22:53,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340181523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:22:53,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120003679] [2024-11-02 12:22:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:53,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:53,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:22:53,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:22:53,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:22:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:53,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:22:53,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:22:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:53,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:22:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120003679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:22:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1049154194] [2024-11-02 12:22:53,805 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 12:22:53,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:22:53,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-02 12:22:53,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973003269] [2024-11-02 12:22:53,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:22:53,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:22:53,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:53,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:22:53,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:22:53,815 INFO L87 Difference]: Start difference. First operand 506 states and 925 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-02 12:22:53,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:53,937 INFO L93 Difference]: Finished difference Result 506 states and 925 transitions. [2024-11-02 12:22:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-02 12:22:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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 42 [2024-11-02 12:22:53,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:53,943 INFO L225 Difference]: With dead ends: 506 [2024-11-02 12:22:53,944 INFO L226 Difference]: Without dead ends: 314 [2024-11-02 12:22:53,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:22:53,946 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 233 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:53,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 179 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:22:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-02 12:22:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2024-11-02 12:22:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.8146964856230032) internal successors, (568), 313 states have internal predecessors, (568), 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) [2024-11-02 12:22:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 568 transitions. [2024-11-02 12:22:53,964 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 568 transitions. Word has length 42 [2024-11-02 12:22:53,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:53,965 INFO L471 AbstractCegarLoop]: Abstraction has 314 states and 568 transitions. [2024-11-02 12:22:53,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-02 12:22:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 568 transitions. [2024-11-02 12:22:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-02 12:22:53,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:53,967 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:53,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:22:54,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:22:54,169 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 3 more)] === [2024-11-02 12:22:54,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1790622290, now seen corresponding path program 1 times [2024-11-02 12:22:54,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:54,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325098250] [2024-11-02 12:22:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:54,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:22:54,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:22:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:22:54,237 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:22:54,237 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:22:54,239 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-02 12:22:54,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 6 remaining) [2024-11-02 12:22:54,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 6 remaining) [2024-11-02 12:22:54,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 6 remaining) [2024-11-02 12:22:54,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 6 remaining) [2024-11-02 12:22:54,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 6 remaining) [2024-11-02 12:22:54,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:22:54,247 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-02 12:22:54,250 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-02 12:22:54,250 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-02 12:22:54,291 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-02 12:22:54,297 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 98 places, 97 transitions, 210 flow [2024-11-02 12:22:54,896 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 13051 states, 13010 states have (on average 2.8289008455034588) internal successors, (36804), 13050 states have internal predecessors, (36804), 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) [2024-11-02 12:22:54,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:22:54,905 INFO L333 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, 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;@3e2349da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:22:54,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-02 12:22:54,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 13051 states, 13010 states have (on average 2.8289008455034588) internal successors, (36804), 13050 states have internal predecessors, (36804), 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) [2024-11-02 12:22:54,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:22:54,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:54,942 INFO L215 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] [2024-11-02 12:22:54,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:22:54,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:54,943 INFO L85 PathProgramCache]: Analyzing trace with hash -893886452, now seen corresponding path program 1 times [2024-11-02 12:22:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086536762] [2024-11-02 12:22:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:55,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086536762] [2024-11-02 12:22:55,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086536762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:55,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:55,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:22:55,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532410172] [2024-11-02 12:22:55,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:55,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:22:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:55,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:22:55,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:55,127 INFO L87 Difference]: Start difference. First operand has 13051 states, 13010 states have (on average 2.8289008455034588) internal successors, (36804), 13050 states have internal predecessors, (36804), 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 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-02 12:22:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:55,657 INFO L93 Difference]: Finished difference Result 20276 states and 56833 transitions. [2024-11-02 12:22:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:22:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-02 12:22:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:55,785 INFO L225 Difference]: With dead ends: 20276 [2024-11-02 12:22:55,786 INFO L226 Difference]: Without dead ends: 12607 [2024-11-02 12:22:55,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:55,806 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 142 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:55,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 172 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:22:55,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12607 states. [2024-11-02 12:22:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12607 to 12607. [2024-11-02 12:22:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12607 states, 12570 states have (on average 2.7799522673031025) internal successors, (34944), 12606 states have internal predecessors, (34944), 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) [2024-11-02 12:22:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12607 states to 12607 states and 34944 transitions. [2024-11-02 12:22:56,670 INFO L78 Accepts]: Start accepts. Automaton has 12607 states and 34944 transitions. Word has length 22 [2024-11-02 12:22:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:56,671 INFO L471 AbstractCegarLoop]: Abstraction has 12607 states and 34944 transitions. [2024-11-02 12:22:56,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-02 12:22:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12607 states and 34944 transitions. [2024-11-02 12:22:56,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-02 12:22:56,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:56,672 INFO L215 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] [2024-11-02 12:22:56,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-02 12:22:56,673 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:22:56,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2146723974, now seen corresponding path program 1 times [2024-11-02 12:22:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:56,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978014254] [2024-11-02 12:22:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:56,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:57,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:57,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978014254] [2024-11-02 12:22:57,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978014254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:57,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:57,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:22:57,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54452514] [2024-11-02 12:22:57,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:57,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:22:57,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:57,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:22:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:22:57,128 INFO L87 Difference]: Start difference. First operand 12607 states and 34944 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-02 12:22:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:57,554 INFO L93 Difference]: Finished difference Result 12607 states and 34944 transitions. [2024-11-02 12:22:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:22:57,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2024-11-02 12:22:57,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:57,721 INFO L225 Difference]: With dead ends: 12607 [2024-11-02 12:22:57,722 INFO L226 Difference]: Without dead ends: 12300 [2024-11-02 12:22:57,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:22:57,727 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 133 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:57,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 424 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-02 12:22:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12300 states. [2024-11-02 12:22:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12300 to 12300. [2024-11-02 12:22:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12300 states, 12270 states have (on average 2.7772616136919317) internal successors, (34077), 12299 states have internal predecessors, (34077), 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) [2024-11-02 12:22:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12300 states to 12300 states and 34077 transitions. [2024-11-02 12:22:58,381 INFO L78 Accepts]: Start accepts. Automaton has 12300 states and 34077 transitions. Word has length 25 [2024-11-02 12:22:58,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:58,382 INFO L471 AbstractCegarLoop]: Abstraction has 12300 states and 34077 transitions. [2024-11-02 12:22:58,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-02 12:22:58,383 INFO L276 IsEmpty]: Start isEmpty. Operand 12300 states and 34077 transitions. [2024-11-02 12:22:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:22:58,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:58,384 INFO L215 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, 1, 1, 1, 1] [2024-11-02 12:22:58,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-02 12:22:58,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:22:58,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:58,385 INFO L85 PathProgramCache]: Analyzing trace with hash -600500514, now seen corresponding path program 1 times [2024-11-02 12:22:58,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:58,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485602599] [2024-11-02 12:22:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:58,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:22:58,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:58,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485602599] [2024-11-02 12:22:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485602599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:58,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:22:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75468] [2024-11-02 12:22:58,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:58,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:22:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:22:58,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:22:58,448 INFO L87 Difference]: Start difference. First operand 12300 states and 34077 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-02 12:22:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:22:58,875 INFO L93 Difference]: Finished difference Result 14012 states and 38847 transitions. [2024-11-02 12:22:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:22:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2024-11-02 12:22:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:22:58,963 INFO L225 Difference]: With dead ends: 14012 [2024-11-02 12:22:58,963 INFO L226 Difference]: Without dead ends: 12785 [2024-11-02 12:22:58,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:22:58,971 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:22:58,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 213 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:22:59,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12785 states. [2024-11-02 12:22:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12785 to 11985. [2024-11-02 12:22:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11985 states, 11955 states have (on average 2.771392722710163) internal successors, (33132), 11984 states have internal predecessors, (33132), 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) [2024-11-02 12:22:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11985 states to 11985 states and 33132 transitions. [2024-11-02 12:22:59,674 INFO L78 Accepts]: Start accepts. Automaton has 11985 states and 33132 transitions. Word has length 35 [2024-11-02 12:22:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:22:59,674 INFO L471 AbstractCegarLoop]: Abstraction has 11985 states and 33132 transitions. [2024-11-02 12:22:59,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-11-02 12:22:59,675 INFO L276 IsEmpty]: Start isEmpty. Operand 11985 states and 33132 transitions. [2024-11-02 12:22:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 12:22:59,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:22:59,676 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:22:59,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-02 12:22:59,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:22:59,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:22:59,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1946356609, now seen corresponding path program 1 times [2024-11-02 12:22:59,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:22:59,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188684671] [2024-11-02 12:22:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:22:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:22:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:22:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:22:59,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:22:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188684671] [2024-11-02 12:22:59,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188684671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:22:59,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:22:59,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:22:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478702831] [2024-11-02 12:22:59,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:22:59,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:22:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:22:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:22:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:22:59,773 INFO L87 Difference]: Start difference. First operand 11985 states and 33132 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-02 12:23:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:00,046 INFO L93 Difference]: Finished difference Result 12214 states and 33550 transitions. [2024-11-02 12:23:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:23:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2024-11-02 12:23:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:00,118 INFO L225 Difference]: With dead ends: 12214 [2024-11-02 12:23:00,119 INFO L226 Difference]: Without dead ends: 9582 [2024-11-02 12:23:00,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:23:00,134 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 102 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 191 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 [2024-11-02 12:23:00,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 191 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:23:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9582 states. [2024-11-02 12:23:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9582 to 9451. [2024-11-02 12:23:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9451 states, 9428 states have (on average 2.748621128553246) internal successors, (25914), 9450 states have internal predecessors, (25914), 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) [2024-11-02 12:23:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9451 states to 9451 states and 25914 transitions. [2024-11-02 12:23:00,792 INFO L78 Accepts]: Start accepts. Automaton has 9451 states and 25914 transitions. Word has length 39 [2024-11-02 12:23:00,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:00,792 INFO L471 AbstractCegarLoop]: Abstraction has 9451 states and 25914 transitions. [2024-11-02 12:23:00,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-02 12:23:00,793 INFO L276 IsEmpty]: Start isEmpty. Operand 9451 states and 25914 transitions. [2024-11-02 12:23:00,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-02 12:23:00,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:00,794 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:00,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-02 12:23:00,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:23:00,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:00,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1806144296, now seen corresponding path program 1 times [2024-11-02 12:23:00,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:00,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341940705] [2024-11-02 12:23:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:00,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:00,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341940705] [2024-11-02 12:23:00,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341940705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:23:00,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316699174] [2024-11-02 12:23:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:00,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:00,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:23:00,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:23:00,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:23:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:01,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 12:23:01,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:23:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:01,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:23:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:01,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316699174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:23:01,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [269327290] [2024-11-02 12:23:01,347 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:311) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:286) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:251) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-02 12:23:01,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:23:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-02 12:23:01,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904281155] [2024-11-02 12:23:01,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-02 12:23:01,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:23:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:23:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:23:01,353 INFO L87 Difference]: Start difference. First operand 9451 states and 25914 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-02 12:23:01,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:01,703 INFO L93 Difference]: Finished difference Result 9451 states and 25914 transitions. [2024-11-02 12:23:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-02 12:23:01,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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 42 [2024-11-02 12:23:01,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:01,747 INFO L225 Difference]: With dead ends: 9451 [2024-11-02 12:23:01,747 INFO L226 Difference]: Without dead ends: 5518 [2024-11-02 12:23:01,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:23:01,765 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 606 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:01,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 354 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:23:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5518 states. [2024-11-02 12:23:01,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5518 to 5518. [2024-11-02 12:23:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 5514 states have (on average 2.7734856728327895) internal successors, (15293), 5517 states have internal predecessors, (15293), 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) [2024-11-02 12:23:02,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 15293 transitions. [2024-11-02 12:23:02,033 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 15293 transitions. Word has length 42 [2024-11-02 12:23:02,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:02,033 INFO L471 AbstractCegarLoop]: Abstraction has 5518 states and 15293 transitions. [2024-11-02 12:23:02,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-02 12:23:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 15293 transitions. [2024-11-02 12:23:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-02 12:23:02,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:02,036 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:02,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:23:02,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_368ff46d-9a52-4a06-9747-15c311afb6cd/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:23:02,241 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:23:02,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1670194504, now seen corresponding path program 1 times [2024-11-02 12:23:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:02,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713308975] [2024-11-02 12:23:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:23:02,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:02,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713308975] [2024-11-02 12:23:02,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713308975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:23:02,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:23:02,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:23:02,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038194061] [2024-11-02 12:23:02,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:23:02,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:23:02,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:02,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:23:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:23:02,303 INFO L87 Difference]: Start difference. First operand 5518 states and 15293 transitions. Second operand has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-02 12:23:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:02,434 INFO L93 Difference]: Finished difference Result 6076 states and 16846 transitions. [2024-11-02 12:23:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:23:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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 52 [2024-11-02 12:23:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:02,476 INFO L225 Difference]: With dead ends: 6076 [2024-11-02 12:23:02,476 INFO L226 Difference]: Without dead ends: 5752 [2024-11-02 12:23:02,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:23:02,481 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 34 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:02,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 139 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:23:02,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5752 states. [2024-11-02 12:23:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5752 to 5464. [2024-11-02 12:23:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5464 states, 5461 states have (on average 2.7679912104010254) internal successors, (15116), 5463 states have internal predecessors, (15116), 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) [2024-11-02 12:23:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 15116 transitions. [2024-11-02 12:23:02,759 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 15116 transitions. Word has length 52 [2024-11-02 12:23:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:02,759 INFO L471 AbstractCegarLoop]: Abstraction has 5464 states and 15116 transitions. [2024-11-02 12:23:02,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 21.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-02 12:23:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 15116 transitions. [2024-11-02 12:23:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-02 12:23:02,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:02,764 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:02,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-02 12:23:02,765 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:23:02,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:02,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1734419770, now seen corresponding path program 1 times [2024-11-02 12:23:02,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:02,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194642486] [2024-11-02 12:23:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:02,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:02,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194642486] [2024-11-02 12:23:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194642486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:23:02,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:23:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:23:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282365359] [2024-11-02 12:23:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:23:02,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:23:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:23:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:23:02,917 INFO L87 Difference]: Start difference. First operand 5464 states and 15116 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-02 12:23:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:23:03,021 INFO L93 Difference]: Finished difference Result 7192 states and 19700 transitions. [2024-11-02 12:23:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:23:03,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2024-11-02 12:23:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:23:03,049 INFO L225 Difference]: With dead ends: 7192 [2024-11-02 12:23:03,049 INFO L226 Difference]: Without dead ends: 3106 [2024-11-02 12:23:03,059 INFO L431 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 [2024-11-02 12:23:03,060 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 23 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:23:03,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 117 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:23:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2024-11-02 12:23:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 3106. [2024-11-02 12:23:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 2.5394524959742353) internal successors, (7885), 3105 states have internal predecessors, (7885), 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) [2024-11-02 12:23:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 7885 transitions. [2024-11-02 12:23:03,175 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 7885 transitions. Word has length 60 [2024-11-02 12:23:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:23:03,176 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 7885 transitions. [2024-11-02 12:23:03,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-02 12:23:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 7885 transitions. [2024-11-02 12:23:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-02 12:23:03,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:03,179 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:03,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-02 12:23:03,180 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 4 more)] === [2024-11-02 12:23:03,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1646502877, now seen corresponding path program 1 times [2024-11-02 12:23:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:03,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863141019] [2024-11-02 12:23:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:23:03,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:23:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:23:03,239 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:23:03,240 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:23:03,240 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-02 12:23:03,240 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2024-11-02 12:23:03,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2024-11-02 12:23:03,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2024-11-02 12:23:03,241 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2024-11-02 12:23:03,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2024-11-02 12:23:03,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2024-11-02 12:23:03,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-02 12:23:03,243 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:23:03,243 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-02 12:23:03,243 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-02 12:23:03,269 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-02 12:23:03,272 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 117 places, 115 transitions, 257 flow [2024-11-02 12:23:11,822 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 229631 states, 229520 states have (on average 3.7312739630533285) internal successors, (856402), 229630 states have internal predecessors, (856402), 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) [2024-11-02 12:23:11,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:23:11,829 INFO L333 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, 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;@3e2349da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:23:11,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-02 12:23:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 229631 states, 229520 states have (on average 3.7312739630533285) internal successors, (856402), 229630 states have internal predecessors, (856402), 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) [2024-11-02 12:23:12,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-02 12:23:12,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:23:12,184 INFO L215 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] [2024-11-02 12:23:12,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-02 12:23:12,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:23:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash 298571308, now seen corresponding path program 1 times [2024-11-02 12:23:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:23:12,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832793305] [2024-11-02 12:23:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:23:12,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:23:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:23:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:23:12,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:23:12,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832793305] [2024-11-02 12:23:12,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832793305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:23:12,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:23:12,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:23:12,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630094172] [2024-11-02 12:23:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:23:12,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:23:12,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:23:12,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:23:12,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:23:12,570 INFO L87 Difference]: Start difference. First operand has 229631 states, 229520 states have (on average 3.7312739630533285) internal successors, (856402), 229630 states have internal predecessors, (856402), 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 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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)